ANSI Bellow Valve

Bellows Seal Gate Valve

Size range : 2”-24”
Class : 150LB -1500LB
Temperature : ≤425℃
Materials:WCB,WC6,WC9,C5,C12,CF8,CF8M,CF3M,SS321,904L etc.
Materials of bellows: SS304, SS316, SS316L,SS321,SS316Ti ,Hastelly C276
Application:Hot oil system, steam system, molten sale and hot and cold water system etc.

Technical specification:
Design Standard: API600 / BS1873
Face To Face: ANSI B16.10
Flange ends: ANSI B16.5
Test & Inspection: API 598

Features and benefits

● Long cycle life bellows (2000 cycles) in Gr. 321 (stainless), Inconel for special applications, (may be replaced with Monel trim to resist corrosion or Hastelloy C for chlorine service).
● Improved body-bonnet joint: Graphite reinforced with SS foil gasket for Class 150 valves. Fully-encased, spiral wound graphite-filled Gr. 316 (stainless) gasket for Classes 300-600.
● Bolted body-bonnet for fast serviceability. Hermetically-sealed bonnets available for Classes 300 and 600.
● Two or three section bellows assembly.
● Non-rotating stemprevents torsion of bellows.
● Two secondary stem seals: a) Backseat in open position; b) Graphite packing.
● Welded-in seat hardfaced with CoCr alloy.
● Wedge hardfaced with CoCr alloy for long life.
● Seating faces hardfaced with CoCr alloy, ground and lapped. 

If you have any enquiry about quotation or cooperation,please feel free to email us at or use the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.


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