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The SV series valve, which is solenoid operated, is a normally closed valve that opens when current is supplied from the battery through a magnetic switch. Temperature, level or pressure Swichgage® instruments installed on the diesel engine and pump or compressor trip the magnetic switch breaking the circuit from the battery which closes the valve and stops the engine.
The SV-12 valve operates on 12-VDC, has a 1/4 NPT inlet and outlet and a full 3/16 in. (5 mm) orifice. A 24-VDC (SV-24) is optional. The SV valves open against 30 psi. (207 kPa) [2.07 bar] inlet pressure.
For a greater flow rate valve, we offer the special series SV valve with a 1/4 in. (6 mm) orifice which opens against maximum pressure of 15 psi (103 kPa) [1.03 bar]. This valve is recommended where greater flow is required and only static head or low transfer pump pressures are encountered.
The Murphy SV-HP series valves open against diesel fuel transfer pump pressure up to 60 psi (414 kPa) [4.14 bar]. Models are available for 12- or 24-volt DC systems. The orifice is 1/4 in. (6 mm) using the same inlet/outlet and options as standard SV. The SV Series fuel shutoff valve is for use with diesel engines with externally accessible fuel injection pumps. The volume of fuel required for the engine to operate must be able to pass through the 3/16 in. (5 mm) or 1/4 in. (6 mm) orifice of the valve. You must be able to attach the fuel valve directly onto or in close proximity to the fuel injection pump in order to close off fuel flow to the pump.
The SV series is NOT intended for use with engines having unit injectors or distributor type injection pumps. Use only with diesel.
Specifications
- Electrical Rating: 12- or 24-VDC, 10 watts
- Orifice: 3/16 in. (5 mm) diameter (optional 1/4 in. [6 mm] diameter). See chart below.
- Body Connections: 1/4 NPT inlet/outlet
- Maximum Opening Pressure:
- 3/16 in. (5 mm) orifice: 30 psi (207 kPa) [2.07 bar]
- 1/4 in. (6 mm) orifice: 15 psi (103 kPa) [1.03 bar]
- Shipping Weight: 1 lb. 6 oz. (0.68 kg)
- Shipping Dimension: 3 x 2-3/4 x 2-3/4 in. (76 x 70 x 70 mm)
SV-HP (High Pressure model)
- Orifice: 1/4 in. (6 mm) diameter. See chart below.
- Maximum Opening Pressure: 60 psi (414 kPa) [4.14 bar].
3/16 Orifice | 1/4 Orifice | |||||||||||
Differential Pressure | 1 | 2 | 5 | 10 | 20 | 30 | 1 | 2 | 5 | 10 | 15 | |
Gallons per Minute | .48 | .68 | 1.1 | 1.5 | 2.2 | 2.6 | .72 | 1.05 | 1.65 | 2.35 | 2.70 | |
Liters per Minute | 2.01 | 2.85 | 4.62 | 6.3 | 9.24 | 10.92 | 3.02 | 4.41 | 6.93 | 9.87 | 11.34 |
For more information about this product, you can download the related literature here:
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