FCT bolted bonnet gate valves are manufactured in accordance with API 600 and ASME B16.34, featuring a solid or flexible wedge, metal-to-metal seating, and a bolted body-bonnet connection. This configuration ensures structural integrity, especially in high-pressure and high-temperature environments.
The design allows for easy removal of the bonnet for internal inspection, seat replacement, or maintenance, making it a preferred choice in industries that require long valve life and field serviceability.
Design Standards: API 600, ASME B16.34
Size Range: 2” to 36” (DN50 to DN900)
Pressure Ratings: ANSI 150 to 2500 / PN 10 to 420
Body Materials: WCB, WC6, WC9, CF8, CF8M, Alloy 20
Trim Materials: 13Cr, F6a, HF, Inconel, Stellite®
Seat Type: Metal-to-Metal, Optional Renewable Seats
End Connections: Flanged, Butt Weld
Temperature Range: -29°C to +600°C
Operation: Manual, Gearbox, Pneumatic or Electric
Leakage Class: API 598, Class IV–V
Optional: Backseat, Drain Plug, Position Indicator
Bolted bonnet allows easy access for maintenance
Full port design reduces pressure drop
Flexible wedge or solid wedge options
Available with by-pass, drain, and sealant injection
Fire-safe and fugitive emission compliant
Long-lasting seat and stem interface
Refining and petrochemical processing
Power plants and high-temperature steam systems
Crude oil and natural gas transmission
Chemical process and utility piping
Water treatment and industrial fluid isolation
General-purpose shut-off in industrial plants