API Bellows sealed gate valve is a type of gate valve. The gate valves control the flow of liquid in a pipeline by having a gate that can open and close. The Bellows Sealed Valves have a rising stem connected to a handwheel that is connected to a long bellow.


1.Bolted Bonnet
2.ASME Class 150 and 300
3.Cast Carbon, Stainless Steel or Alloy Steel
4.Flanged ends or butt weld ends
5.Standard trim is API trim 12 with 316Ti bellows.
6.Stems are non-rotating with surface finish to maximize packing seal for low fugitive emissions
7.Bellows are hydro-formed rather than welded.
8.Each valve is shell, seat and backseat pressure tested per industry standard API 598


Size: from 2″ to 24″.
Pressure: 150 – 300LB
Material: 1.0619, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, and CF8M
Design and production standard: API 600/ ASME B16.34, MSS SP-117
Distance between flanges: API 6D, ASME B16.10
Connected in accordance with standard: ASME B16.5 (2″~24″), MSS SP-44/ API 605 (26″ & above)
Test standard: API 598/ API 6D/ ASME B16.34/ MSS SP-61
Working temperature: from -46ºC or -50ºC (stainless steel constructions) and -29ºC (carbon steel constructions) up to 600℃

Need more information?