{"id":1132,"date":"2025-08-06T15:06:51","date_gmt":"2025-08-06T15:06:51","guid":{"rendered":"https:\/\/stvvalve.com\/?p=1132"},"modified":"2025-08-06T15:06:51","modified_gmt":"2025-08-06T15:06:51","slug":"understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications","status":"publish","type":"post","link":"https:\/\/stvvalve.com\/es\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/","title":{"rendered":"Understanding the 3 Inch Gate Valve ASTM A105N 1500 LB for Industrial Applications"},"content":{"rendered":"<h3><strong>1. Valve Overview<\/strong><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Material<\/strong>: ASTM A105N (Normalized forged carbon steel)<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Normalization improves\u00a0<strong>toughness and stress resistance<\/strong>\u00a0vs. standard A105.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Suitable for\u00a0<strong>-29\u00b0C to 425\u00b0C<\/strong>; for cryogenic use, opt for\u00a0<strong>A350 LF2<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Size<\/strong>: 3&#8243; (DN 80) \u2013 balances flow capacity and compactness.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Pressure Class<\/strong>:\u00a0<strong>1500 LB<\/strong>\u00a0(per ASME B16.34)<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>1500 PSI @ 38\u00b0C<\/strong>; derate at higher temps (e.g., ~1000 PSI @ 400\u00b0C).<\/p>\n<\/li>\n<li>\n<p><div style=\"width: 810px\" class=\"wp-caption alignnone\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.stvvalves.com\/wp-content\/uploads\/2024\/03\/class-800-gate-valve-astm-a105n-3-inch-800lb-api-602-sw.jpg?resize=800%2C800&#038;ssl=1\" alt=\"Understanding the 3 Inch Gate Valve ASTM A105N 800 LB for Industrial Applications\" width=\"800\" height=\"800\" \/><p class=\"wp-caption-text\">3 Inch Gate Valve, 800LB Forged Gate Valve Supplier in china, API 602 Gate Valve, Bolt Bonnet Gate Valve Manufacturer, China ASTM A105 Gate Valve, Class 800 LB Gate Valve<\/p><\/div><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3><strong>2. Key Design Standards<\/strong><\/h3>\n<div class=\"markdown-table-wrapper\">\n<table>\n<thead>\n<tr>\n<th><strong>Standard<\/strong><\/th>\n<th><strong>Purpose<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><a href=\"https:\/\/www.stvvalves.com\/products\/class-800-gate-valve-astm-a105n-3-inch-800lb-api-602-sw\/\"><strong>API 602<\/strong><\/a><\/td>\n<td>Design\/manufacturing of forged steel gate valves (\u2264 4&#8243;).<\/td>\n<\/tr>\n<tr>\n<td><strong>ASME B16.34<\/strong><\/td>\n<td>Pressure-temperature ratings for valve bodies.<\/td>\n<\/tr>\n<tr>\n<td><strong>API 598<\/strong><\/td>\n<td>Defines\u00a0<strong>pressure and leakage testing<\/strong>\u00a0(Class B for metal seats).<\/td>\n<\/tr>\n<tr>\n<td><strong>NACE MR0175<\/strong><\/td>\n<td>Required for\u00a0<strong>sour service<\/strong>\u00a0(H\u2082S environments).<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<hr \/>\n<h3><strong>3. Industrial Applications<\/strong><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Oil &amp; Gas<\/strong>: Wellheads, pipelines, manifolds (high-pressure isolation).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Power Plants<\/strong>: Steam lines, boiler feed systems.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Petrochemical<\/strong>: Refinery process lines, hydrogen service.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Hydrocarbon Processing<\/strong>: Fire-safe designs (API 607\/6FA) for flammable fluids.<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h3><strong>4. Critical Selection Factors<\/strong><\/h3>\n<h4><strong>A. End Connections<\/strong><\/h4>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Butt Weld (BW)<\/strong>:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Pros<\/strong>: Leak-proof, high integrity for permanent installations.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Cons<\/strong>: Requires skilled welding; non-removable.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Socket Weld (SW)<\/strong>:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Pros<\/strong>: Easier assembly than BW; good for high-pressure small-bore lines.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Cons<\/strong>: Not ideal for thermal cycling.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Flanged (RF\/RTJ)<\/strong>:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Pros<\/strong>: Easy maintenance\/installation.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Cons<\/strong>: Bulkier; potential leak paths at gaskets.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p class=\"ds-markdown-paragraph\"><strong>Recommendation<\/strong>:\u00a0<strong>BW for critical high-P systems<\/strong>;\u00a0<strong>SW for compact layouts<\/strong>.<\/p>\n<h4><strong>B. Seating &amp; Leakage<\/strong><\/h4>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Metal Seats (Stellite 6\/13Cr)<\/strong>:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Class B leakage (API 598)<\/strong>\u00a0\u2013 suitable for\u00a0<strong>high-temp\/abrasive fluids<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Soft Seats (PTFE)<\/strong>:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Class VI (zero leakage)<\/strong>\u00a0\u2013 limited to\u00a0<strong>\u2264 250\u00b0C<\/strong>.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4><strong>C. Operation<\/strong><\/h4>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Manual (Handwheel\/Gear)<\/strong>:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Gear operators\u00a0<strong>required for Class 1500<\/strong>\u00a0due to high seating torque.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Actuated (Pneumatic\/Electric)<\/strong>:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Used in\u00a0<strong>automated or remote systems<\/strong>\u00a0(e.g., offshore platforms).<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3><strong>5. Material &amp; Certification Requirements<\/strong><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>ASTM A105N<\/strong>:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Verify\u00a0<strong>normalization heat treatment<\/strong>\u00a0on Material Test Reports (MTRs).<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>NACE MR0175<\/strong>: Essential for\u00a0<strong>sour gas (H\u2082S)<\/strong>\u00a0applications.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Fire-Safe (API 607\/6FA)<\/strong>: Mandatory for hydrocarbon service.<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h3><strong>6. Pressure-Temperature (P-T) Derating<\/strong><\/h3>\n<p class=\"ds-markdown-paragraph\">Refer to\u00a0<strong>ASME B16.34<\/strong>\u00a0for allowable pressures at elevated temps:<\/p>\n<div class=\"markdown-table-wrapper\">\n<table>\n<thead>\n<tr>\n<th><strong>Temp (\u00b0C)<\/strong><\/th>\n<th><strong>Max Pressure (PSI)<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>38\u00b0C<\/td>\n<td>1500 (Full rating)<\/td>\n<\/tr>\n<tr>\n<td>200\u00b0C<\/td>\n<td>~1350<\/td>\n<\/tr>\n<tr>\n<td>400\u00b0C<\/td>\n<td>~1000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ds-markdown-paragraph\"><strong>Always design with a safety margin!<\/strong><\/p>\n<hr \/>\n<h3><strong>7. Top Manufacturers<\/strong><\/h3>\n<div class=\"markdown-table-wrapper\">\n<table>\n<thead>\n<tr>\n<th><strong>Brand<\/strong><\/th>\n<th><strong>Key Strength<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Velan<\/strong><\/td>\n<td>High-pressure forged valves, cryogenic options<\/td>\n<\/tr>\n<tr>\n<td><strong>Parker Bonney Forge<\/strong><\/td>\n<td>NACE + fire-safe compliance<\/td>\n<\/tr>\n<tr>\n<td><strong>Cameron<\/strong><\/td>\n<td>Premium oil &amp; gas valves<\/td>\n<\/tr>\n<tr>\n<td><strong>Emerson<\/strong><\/td>\n<td>Reliable performance in refineries<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p class=\"ds-markdown-paragraph\"><strong>Tip<\/strong>: Look for\u00a0<strong>API Monogram<\/strong>\u00a0for valves made in API-licensed facilities.<\/p>\n<hr \/>\n<h3><strong>8. Inspection &amp; Testing<\/strong><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Hydrostatic Test<\/strong>: 1.5x rated pressure (per API 598).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Seat Leakage Test<\/strong>: Class B (metal seats) or Class VI (soft seats).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Third-Party Validation<\/strong>: DNV, ABS, or Lloyds for critical applications.<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h3><strong>9. Cost Estimate<\/strong><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>3&#8243; A105N Class 1500 BW Gate Valve<\/strong>:\u00a0<strong>$1,500\u2013$3,500<\/strong><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>With Gear Operator<\/strong>:\u00a0<strong>+$500\u2013$1,500<\/strong><\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>NACE\/Fire-Safe Certified<\/strong>:\u00a0<strong>+20\u201330%<\/strong><\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h3><strong>10. Installation &amp; Maintenance Tips<\/strong><\/h3>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Pre-Installation<\/strong>:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Verify\u00a0<strong>weld procedure specifications (WPS)<\/strong>\u00a0for BW valves.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Ensure\u00a0<strong>pipe alignment<\/strong>\u00a0to avoid stress on valve body.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Maintenance<\/strong>:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Lubricate stems regularly in corrosive environments.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">For metal seats,\u00a0<strong>periodic lapping<\/strong>\u00a0may be needed.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<hr \/>\n<h3><strong>Conclusion<\/strong><\/h3>\n<p class=\"ds-markdown-paragraph\">The\u00a0<strong>3-inch ASTM A105N Class 1500 gate valve<\/strong>\u00a0is ideal for\u00a0<strong>high-pressure, high-temperature industrial systems<\/strong>\u00a0where forged steel reliability is critical. Prioritize:<br \/>\n\u2705\u00a0<strong>API 602 design<\/strong>\u00a0(forged, compact)<br \/>\n\u2705\u00a0<strong>Butt weld ends<\/strong>\u00a0for permanent installations<br \/>\n\u2705\u00a0<strong>Stellite-seated<\/strong>\u00a0for durability<br \/>\n\u2705\u00a0<strong>NACE\/fire-safe certs<\/strong>\u00a0if applicable<\/p>\n<h3><strong>Vendor Shortlist<\/strong><\/h3>\n<h4><strong>1. Premium Brands (API 602 Compliant)<\/strong><\/h4>\n<div class=\"markdown-table-wrapper\">\n<table>\n<thead>\n<tr>\n<th><strong>Vendor<\/strong><\/th>\n<th><strong>Key Offerings<\/strong><\/th>\n<th><strong>Contact<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Velan<\/strong><\/td>\n<td>High-pressure, cryogenic, fire-safe options<\/td>\n<td><a href=\"https:\/\/www.velan.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">www.velan.com<\/a><\/td>\n<\/tr>\n<tr>\n<td><strong>Parker Bonney Forge<\/strong><\/td>\n<td>NACE MR0175, API 602, gear-operated<\/td>\n<td><a href=\"https:\/\/www.parker.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">www.parker.com<\/a><\/td>\n<\/tr>\n<tr>\n<td><strong>Cameron (Schlumberger)<\/strong><\/td>\n<td>Oil &amp; gas specialized, API Monogram valves<\/td>\n<td><a href=\"https:\/\/www.cameron.slb.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">www.cameron.slb.com<\/a><\/td>\n<\/tr>\n<tr>\n<td><strong>Emerson (Fisher)<\/strong><\/td>\n<td>Refinery &amp; petrochemical-grade valves<\/td>\n<td><a href=\"https:\/\/www.emerson.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">www.emerson.com<\/a><\/td>\n<\/tr>\n<tr>\n<td><strong>L&amp;T Valves<\/strong><\/td>\n<td>Cost-effective, API-certified<\/td>\n<td><a href=\"https:\/\/www.lntvalves.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">www.lntvalves.com<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h4><strong>2. Reliable Distributors<\/strong><\/h4>\n<div class=\"markdown-table-wrapper\">\n<table>\n<thead>\n<tr>\n<th><strong>Distributor<\/strong><\/th>\n<th><strong>Advantage<\/strong><\/th>\n<th><strong>Link<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>MRO Industrial<\/strong><\/td>\n<td>Stocks Parker, Velan, Cameron valves<\/td>\n<td><a href=\"https:\/\/www.mro-industrial.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">www.mro-industrial.com<\/a><\/td>\n<\/tr>\n<tr>\n<td><strong>Trimteck<\/strong><\/td>\n<td>Customizable actuators + valves<\/td>\n<td><a href=\"https:\/\/www.trimteck.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">www.trimteck.com<\/a><\/td>\n<\/tr>\n<tr>\n<td><strong>Valves Online<\/strong><\/td>\n<td>Fast shipping for standard configurations<\/td>\n<td><a href=\"https:\/\/www.valvesonline.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">www.valvesonline.com<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<hr \/>\n<h3><strong>Technical Datasheet Template<\/strong><\/h3>\n<p class=\"ds-markdown-paragraph\"><strong>Valve Type<\/strong>: Forged Steel Gate Valve (API 602)<br \/>\n<strong>Size<\/strong>: 3&#8243; (DN 80)<br \/>\n<strong>Material<\/strong>: ASTM A105N (Normalized Carbon Steel)<br \/>\n<strong>Pressure Class<\/strong>: 1500 LB (ASME B16.34)<br \/>\n<strong>Design Code<\/strong>: API 602<br \/>\n<strong>End Connections<\/strong>: Butt Weld (BW) \/ Socket Weld (SW) \/ Flanged (RF\/RTJ)<br \/>\n<strong>Seat Material<\/strong>: Stellite 6 (Standard), PTFE (Optional)<br \/>\n<strong>Stem Material<\/strong>: ASTM A182 F6a (13Cr)<br \/>\n<strong>Leakage Class<\/strong>: API 598 Class B (Metal Seat), Class VI (Soft Seat)<br \/>\n<strong>Temperature Range<\/strong>: -29\u00b0C to 425\u00b0C (A105N)<br \/>\n<strong>Fire-Safe<\/strong>: API 607\/6FA (Optional)<br \/>\n<strong>NACE Compliance<\/strong>: MR0175 (If sour service)<br \/>\n<strong>Operation<\/strong>: Handwheel \/ Gear Operator \/ Actuated (Pneumatic\/Electric)<br \/>\n<strong>Testing<\/strong>: Hydrostatic (1.5x rated pressure), Seat Leakage (Per API 598)<\/p>\n<hr \/>\n<h3><strong>Procurement Checklist<\/strong><\/h3>\n<ol start=\"1\">\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Request from Vendors<\/strong>:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Material Test Reports (MTRs)<\/strong>\u00a0for ASTM A105N.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>API 598 Test Certificates<\/strong>\u00a0(Hydro + Seat Leakage).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Fire-Safe\/NACE Certifications<\/strong>\u00a0(If applicable).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Dimensional Drawings<\/strong>\u00a0(ASME B16.10 face-to-face).<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Compare Quotes On<\/strong>:<\/p>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\">Lead time (Standard: 8\u201312 weeks; Rush: 4\u20136 weeks).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Incoterms (FOB, CIF, etc.).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\">Warranty (Typically 12\u201324 months).<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>1. Valve Overview Material: ASTM A105N (Normalized forged carbon steel) Normalization improves\u00a0toughness and stress resistance\u00a0vs. standard A105. Suitable for\u00a0-29\u00b0C to 425\u00b0C; for cryogenic use, opt for\u00a0A350 LF2. Size: 3&#8243; (DN 80) \u2013 balances flow capacity and compactness. Pressure Class:\u00a01500 LB\u00a0(per ASME B16.34) 1500 PSI @ 38\u00b0C; derate at higher temps (e.g., ~1000 PSI @ 400\u00b0C). [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[15,14],"tags":[217,218,219,220,221,222],"class_list":["post-1132","post","type-post","status-publish","format-standard","hentry","category-industry-valve-news","category-news","tag-3-inch-gate-valve","tag-800lb-forged-gate-valve-supplier-in-china","tag-api-602-gate-valve","tag-bolt-bonnet-gate-valve-manufacturer","tag-china-astm-a105-gate-valve","tag-class-800-lb-gate-valve"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Understanding the 3 Inch Gate Valve ASTM A105N 1500 LB for Industrial Applications - China Industry Valves Supplier &amp; Manufacturer<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/stvvalve.com\/es\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Understanding the 3 Inch Gate Valve ASTM A105N 1500 LB for Industrial Applications - China Industry Valves Supplier &amp; Manufacturer\" \/>\n<meta property=\"og:description\" content=\"1. Valve Overview Material: ASTM A105N (Normalized forged carbon steel) Normalization improves\u00a0toughness and stress resistance\u00a0vs. standard A105. Suitable for\u00a0-29\u00b0C to 425\u00b0C; for cryogenic use, opt for\u00a0A350 LF2. Size: 3&#8243; (DN 80) \u2013 balances flow capacity and compactness. Pressure Class:\u00a01500 LB\u00a0(per ASME B16.34) 1500 PSI @ 38\u00b0C; derate at higher temps (e.g., ~1000 PSI @ 400\u00b0C). [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/stvvalve.com\/es\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/\" \/>\n<meta property=\"og:site_name\" content=\"China Industry Valves Supplier &amp; Manufacturer\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/JalenLee567\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-08-06T15:06:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.stvvalves.com\/wp-content\/uploads\/2024\/03\/class-800-gate-valve-astm-a105n-3-inch-800lb-api-602-sw.jpg\" \/>\n<meta name=\"author\" content=\"stvvalve\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@RainLee18500645\" \/>\n<meta name=\"twitter:site\" content=\"@RainLee18500645\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"stvvalve\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/\"},\"author\":{\"name\":\"stvvalve\",\"@id\":\"https:\\\/\\\/stvvalve.com\\\/#\\\/schema\\\/person\\\/34a3237d0f136ce0b0fd71258fb80dd6\"},\"headline\":\"Understanding the 3 Inch Gate Valve ASTM A105N 1500 LB for Industrial Applications\",\"datePublished\":\"2025-08-06T15:06:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/\"},\"wordCount\":746,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/stvvalve.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.stvvalves.com\\\/wp-content\\\/uploads\\\/2024\\\/03\\\/class-800-gate-valve-astm-a105n-3-inch-800lb-api-602-sw.jpg\",\"keywords\":[\"3 Inch Gate Valve\",\"800LB Forged Gate Valve Supplier in china\",\"API 602 Gate Valve\",\"Bolt Bonnet Gate Valve Manufacturer\",\"China ASTM A105 Gate Valve\",\"Class 800 LB Gate Valve\"],\"articleSection\":[\"industry valve news\",\"News\"],\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/\",\"url\":\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/\",\"name\":\"Understanding the 3 Inch Gate Valve ASTM A105N 1500 LB for Industrial Applications - China Industry Valves Supplier &amp; Manufacturer\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/stvvalve.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.stvvalves.com\\\/wp-content\\\/uploads\\\/2024\\\/03\\\/class-800-gate-valve-astm-a105n-3-inch-800lb-api-602-sw.jpg\",\"datePublished\":\"2025-08-06T15:06:51+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/#breadcrumb\"},\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.stvvalves.com\\\/wp-content\\\/uploads\\\/2024\\\/03\\\/class-800-gate-valve-astm-a105n-3-inch-800lb-api-602-sw.jpg\",\"contentUrl\":\"https:\\\/\\\/www.stvvalves.com\\\/wp-content\\\/uploads\\\/2024\\\/03\\\/class-800-gate-valve-astm-a105n-3-inch-800lb-api-602-sw.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/stvvalve.com\\\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/stvvalve.com\\\/home\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Understanding the 3 Inch Gate Valve ASTM A105N 1500 LB for Industrial Applications\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/stvvalve.com\\\/#website\",\"url\":\"https:\\\/\\\/stvvalve.com\\\/\",\"name\":\"China Industry Valves Supplier &amp; Manufacturer\",\"description\":\"Ball Valve,Gate Valve,Globe Valve,Check Valve, Y Strainer.We wholesale many kinds of ball valves such as stainless steel ball valve, forged steel gate valve, forged steel check valve.Contact us for more information.\",\"publisher\":{\"@id\":\"https:\\\/\\\/stvvalve.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/stvvalve.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"es\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/stvvalve.com\\\/#organization\",\"name\":\"China Industry Valves Supplier &amp; Manufacturer\",\"url\":\"https:\\\/\\\/stvvalve.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\\\/\\\/stvvalve.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/stvvalve.com\\\/wp-content\\\/uploads\\\/2021\\\/08\\\/logo_STV.jpg\",\"contentUrl\":\"https:\\\/\\\/stvvalve.com\\\/wp-content\\\/uploads\\\/2021\\\/08\\\/logo_STV.jpg\",\"width\":602,\"height\":187,\"caption\":\"China Industry Valves Supplier &amp; Manufacturer\"},\"image\":{\"@id\":\"https:\\\/\\\/stvvalve.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/JalenLee567\\\/\",\"https:\\\/\\\/x.com\\\/RainLee18500645\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/stvvalve.com\\\/#\\\/schema\\\/person\\\/34a3237d0f136ce0b0fd71258fb80dd6\",\"name\":\"stvvalve\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/755328fdf1d994875343337a29b6cd4727965089342e761325e371daed38acdc?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/755328fdf1d994875343337a29b6cd4727965089342e761325e371daed38acdc?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/755328fdf1d994875343337a29b6cd4727965089342e761325e371daed38acdc?s=96&d=mm&r=g\",\"caption\":\"stvvalve\"},\"sameAs\":[\"https:\\\/\\\/stvvalve.com\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Understanding the 3 Inch Gate Valve ASTM A105N 1500 LB for Industrial Applications - China Industry Valves Supplier &amp; Manufacturer","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/stvvalve.com\/es\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/","og_locale":"es_ES","og_type":"article","og_title":"Understanding the 3 Inch Gate Valve ASTM A105N 1500 LB for Industrial Applications - China Industry Valves Supplier &amp; Manufacturer","og_description":"1. Valve Overview Material: ASTM A105N (Normalized forged carbon steel) Normalization improves\u00a0toughness and stress resistance\u00a0vs. standard A105. Suitable for\u00a0-29\u00b0C to 425\u00b0C; for cryogenic use, opt for\u00a0A350 LF2. Size: 3&#8243; (DN 80) \u2013 balances flow capacity and compactness. Pressure Class:\u00a01500 LB\u00a0(per ASME B16.34) 1500 PSI @ 38\u00b0C; derate at higher temps (e.g., ~1000 PSI @ 400\u00b0C). [&hellip;]","og_url":"https:\/\/stvvalve.com\/es\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/","og_site_name":"China Industry Valves Supplier &amp; Manufacturer","article_publisher":"https:\/\/www.facebook.com\/JalenLee567\/","article_published_time":"2025-08-06T15:06:51+00:00","og_image":[{"url":"https:\/\/www.stvvalves.com\/wp-content\/uploads\/2024\/03\/class-800-gate-valve-astm-a105n-3-inch-800lb-api-602-sw.jpg","type":"","width":"","height":""}],"author":"stvvalve","twitter_card":"summary_large_image","twitter_creator":"@RainLee18500645","twitter_site":"@RainLee18500645","twitter_misc":{"Escrito por":"stvvalve","Tiempo de lectura":"4 minutos"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/#article","isPartOf":{"@id":"https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/"},"author":{"name":"stvvalve","@id":"https:\/\/stvvalve.com\/#\/schema\/person\/34a3237d0f136ce0b0fd71258fb80dd6"},"headline":"Understanding the 3 Inch Gate Valve ASTM A105N 1500 LB for Industrial Applications","datePublished":"2025-08-06T15:06:51+00:00","mainEntityOfPage":{"@id":"https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/"},"wordCount":746,"commentCount":0,"publisher":{"@id":"https:\/\/stvvalve.com\/#organization"},"image":{"@id":"https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/#primaryimage"},"thumbnailUrl":"https:\/\/www.stvvalves.com\/wp-content\/uploads\/2024\/03\/class-800-gate-valve-astm-a105n-3-inch-800lb-api-602-sw.jpg","keywords":["3 Inch Gate Valve","800LB Forged Gate Valve Supplier in china","API 602 Gate Valve","Bolt Bonnet Gate Valve Manufacturer","China ASTM A105 Gate Valve","Class 800 LB Gate Valve"],"articleSection":["industry valve news","News"],"inLanguage":"es","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/","url":"https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/","name":"Understanding the 3 Inch Gate Valve ASTM A105N 1500 LB for Industrial Applications - China Industry Valves Supplier &amp; Manufacturer","isPartOf":{"@id":"https:\/\/stvvalve.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/#primaryimage"},"image":{"@id":"https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/#primaryimage"},"thumbnailUrl":"https:\/\/www.stvvalves.com\/wp-content\/uploads\/2024\/03\/class-800-gate-valve-astm-a105n-3-inch-800lb-api-602-sw.jpg","datePublished":"2025-08-06T15:06:51+00:00","breadcrumb":{"@id":"https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/#breadcrumb"},"inLanguage":"es","potentialAction":[{"@type":"ReadAction","target":["https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/"]}]},{"@type":"ImageObject","inLanguage":"es","@id":"https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/#primaryimage","url":"https:\/\/www.stvvalves.com\/wp-content\/uploads\/2024\/03\/class-800-gate-valve-astm-a105n-3-inch-800lb-api-602-sw.jpg","contentUrl":"https:\/\/www.stvvalves.com\/wp-content\/uploads\/2024\/03\/class-800-gate-valve-astm-a105n-3-inch-800lb-api-602-sw.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/stvvalve.com\/understanding-the-3-inch-gate-valve-astm-a105n-1500-lb-for-industrial-applications\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/stvvalve.com\/home\/"},{"@type":"ListItem","position":2,"name":"Understanding the 3 Inch Gate Valve ASTM A105N 1500 LB for Industrial Applications"}]},{"@type":"WebSite","@id":"https:\/\/stvvalve.com\/#website","url":"https:\/\/stvvalve.com\/","name":"China Industry Valves Supplier &amp; Manufacturer","description":"Ball Valve,Gate Valve,Globe Valve,Check Valve, Y Strainer.We wholesale many kinds of ball valves such as stainless steel ball valve, forged steel gate valve, forged steel check valve.Contact us for more information.","publisher":{"@id":"https:\/\/stvvalve.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/stvvalve.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"es"},{"@type":"Organization","@id":"https:\/\/stvvalve.com\/#organization","name":"China Industry Valves Supplier &amp; Manufacturer","url":"https:\/\/stvvalve.com\/","logo":{"@type":"ImageObject","inLanguage":"es","@id":"https:\/\/stvvalve.com\/#\/schema\/logo\/image\/","url":"https:\/\/stvvalve.com\/wp-content\/uploads\/2021\/08\/logo_STV.jpg","contentUrl":"https:\/\/stvvalve.com\/wp-content\/uploads\/2021\/08\/logo_STV.jpg","width":602,"height":187,"caption":"China Industry Valves Supplier &amp; Manufacturer"},"image":{"@id":"https:\/\/stvvalve.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/JalenLee567\/","https:\/\/x.com\/RainLee18500645"]},{"@type":"Person","@id":"https:\/\/stvvalve.com\/#\/schema\/person\/34a3237d0f136ce0b0fd71258fb80dd6","name":"stvvalve","image":{"@type":"ImageObject","inLanguage":"es","@id":"https:\/\/secure.gravatar.com\/avatar\/755328fdf1d994875343337a29b6cd4727965089342e761325e371daed38acdc?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/755328fdf1d994875343337a29b6cd4727965089342e761325e371daed38acdc?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/755328fdf1d994875343337a29b6cd4727965089342e761325e371daed38acdc?s=96&d=mm&r=g","caption":"stvvalve"},"sameAs":["https:\/\/stvvalve.com"]}]}},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/stvvalve.com\/es\/wp-json\/wp\/v2\/posts\/1132","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stvvalve.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/stvvalve.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/stvvalve.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/stvvalve.com\/es\/wp-json\/wp\/v2\/comments?post=1132"}],"version-history":[{"count":1,"href":"https:\/\/stvvalve.com\/es\/wp-json\/wp\/v2\/posts\/1132\/revisions"}],"predecessor-version":[{"id":1133,"href":"https:\/\/stvvalve.com\/es\/wp-json\/wp\/v2\/posts\/1132\/revisions\/1133"}],"wp:attachment":[{"href":"https:\/\/stvvalve.com\/es\/wp-json\/wp\/v2\/media?parent=1132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stvvalve.com\/es\/wp-json\/wp\/v2\/categories?post=1132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stvvalve.com\/es\/wp-json\/wp\/v2\/tags?post=1132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}