4420 Gas Turbine Fuel Shutoff Valve
Introducing our 4420 Gas Turbine Fuel Shutoff Valve - your reliable companion for gas turbine applications.
The AMOT 4420 is a compact, stainless-steel gas turbine fuel shutoff valve engineered for reliable fuel isolation on industrial gas turbines. A single-acting, spring-return pneumatic actuator closes the valve in under 100 milliseconds to help protect the turbine and downstream equipment during trips, emergencies, and normal shutdowns.
Here's why it's a game-changer:
Product Features and Benefits:
- Fast, dependable fuel isolation: With a close time of less than 100 milliseconds, the valve enables rapid and accurate control over fuel flow, enhancing operational efficiency and safety.
- Versatile Options: Choose between our 2-way and 2-way vented versions to suit various gas turbine applications. The 2-way vented version of the valve relieves pressure downstream upon shutdown, eliminating the need for additional equipment such as bleed valves. This not only simplifies the system but also reduces maintenance requirements and downtime.
- Clear Position Indication: The optional for the optional open/closed position switch indication for added clarity and control.
- Certified for hazardous areas and sour service
Materials:
- Rugged Stainless Steel Constuction - CF3M Stainless Steel Body; Electroless Nickel Plated Stainless
- Steel Spindle, PTFE seals/ Nitrile Seals/ Ceramic Filled
- Fluoropolymer with Spring energizer
Accreditation available:
- NACE MR-01-75 / ISO 15156 (Meets the material requirements of NACE / ISO standards)
- PED / PE(S)R, ATEX / UKEX, UKCA
Commonly paired with 8402 Gas Turbine Fuel Metering Valve from AMOT.
| Body material: | 316 stainless steel | |
| Trim material: | 316 stainless steel | |
| Seal material: | Viton | |
| Pilot pressure to actuate: | 4.1 to 10.3 bar | 60 to 150 psi |
| Connections: | 2" Valve 3" Valve |
ANSI Class 300 or 600 RF Flange ANSI Class 300 or 600 RF Flange |
| Flow coefficients: | 2" Valve - Kv = 72 3" Valve - Kv = 113 |
Cv = 83 Cv = 130 |
| Position switch ratings: |
UL Class 1, Groups A,B,C&D CSA Class 1, Div. 1, Groups A,B,C&D |
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| Solenoid valve ratings: | UL&CSA Class1, Div. 1, Type H Coil (24VDC) | |
The 4420 gas turbine fuel shutoff valve is developed for use in both manual and automatic control systems, including:
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Fuel shutoff valve for industrial gas turbines
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Starting air or starting gas valve
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Vented fuel or gas valve where downstream pressure must be relieved after shutdown
Typical uses include power generation, oil and gas compression, and mechanical-drive turbomachinery where fast, repeatable fuel isolation is critical.
How the 4420 Works
The Model 4420 is a single-acting, spring-return, pneumatically actuated shutoff valve designed specifically for gas turbine fuel systems. When pilot air pressure is applied to the actuator, the valve opens to allow flow from the IN port to the OUT port. When the pilot pressure is removed, the spring drives the valve closed to isolate the fuel supply.
For the 2-way vented version, the vent port is closed during normal operation. When the valve receives a shutdown signal and the pilot pressure is released, the main flow path closes and the vent port opens to the downstream piping, relieving trapped pressure and helping purge the line. This integrated venting capability removes the need for separate bleed or vent valves and simplifies skid design.
