Bellows seal gate valve is generally used gate valve type to protection for pumps or similar equipment, allowing the flow only in one direction and preventing flow reversal due to back pressure. This gate valve design provides a tight seal as well as a fast reaction to the closure impulse.
Series - 150 To 1500
Gate valve metal seated bellow valve may not provide drop tight sealing when in gas system or fluid system with low back flow pressure or fluids containing particles.
Design Features
- Long service life
- Double seal, good safety performance
Product Specifications
- Size 1/4″– 3″
- Pressure Class "150, 300, 600, 800, 900, 1500"
- End Connection Flange ends, SW ends, BW ends, BB, OS&Y
- Body Material WCB, CF8, CF8M, F304, F316, A105
- Wedge Material WCB+13Cr, CF8+STL.6, CF8M+STL.6
- Seat Material 13Cr, F304, F316, SS304, SS316, OVERLAY 13Cr
- Stem Material SS304, SS316, X20Cr 13
- Design Standard API600
- Face to Face Standard ANSI B 16.10
- Test Standard API 598
- Temperature Range -29~425°C (depending on materials chosen)
- Actuator Options Handwheel, Bevel Gear, Pneumatic, Electric
-
Structure Style
- Bolted Bonnet (BB) / Welded Bonnet (WB)
- OS&Y (Outside Screw and Yoke)
-
Connection Standard
- Flange Drilling: ASME B16.5
- Butt Weld: ASME B16.25, GB/T 12224