4420 Turbine Fuel Shutoff Valve
Model 4420 has been designed specifically for use as a fuel shut-off valve in gas turbine applications. The 4420 is a single acting spring return, pneumatically actuated valve and is available in both 2-way and 2-way vented versions.
Note: This product replaces Model 4320.
Features and Benefits
- Less that 100 millisecond Close Time
- Unique “vent” port - no need for separate bleed valves - reduced installation cost
- 2-Way & 2-Way Vented
- Open/Closed Position Switch Indication (Optional)
Specifications
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 |
|
Solenoid valve ratings: | UL&CSA Class1, Div. 1, Type H Coil (24VDC) |
Applications
Developed for use in manual and automatic control systems:
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Fuel shutoff valve for gas turbines in the 10 to 30 MW size range
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Starting air/gas valve
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Vented fuel/gas valve