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MURPHY M25 / M50 Series fuel shutoff valves燃油切断阀
Electromechanical Fuel Shutoff Valves M25 & M50 Series 电动燃油切断阀
MURPHY M25和M50系列燃料切断阀是用于关闭天然气发动机的半自动装置。当电磁铁通电并使闩锁跳闸时，阀门手动打开并关闭。可通过转动断开旋钮手动关闭阀门。一个正常通电模式是可用的，保持阀门打开电气和关闭时，线圈断电。当阀门关闭时，阀体中的一个排气口释放滞留的气体。当阀门打开或关闭时，弹出指示按钮会通知您。MURPHY These fuel shutoff valves are semi-automatic devices for shutdown of natural gas-fueled engines. The valve is opened manually and closes when the electromagnet is energized and trips the latch. The valve can be closed manually by turning the disconnect knob. A normally energized model is available that holds the valve open electrically and closes when the coil is de-energized. A vent in the valve body relieves trapped gas when the valve closes. A pop-out indicator button informs you when the valve is open or closed.
MURPHY M25 / M50 Series fuel shutoff valves PDF Catalog
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Instant Response to Shut Off Signal
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Positive Valve Closure
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Vents Gases Trapped After Shutdown
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Explosion-proof Models Available
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Models Available for Magneto, CD Ignition or 12/24 VDC
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Normally Energized Model Available
The valve's tripping power is provided by an engine ignition system or battery. Models are available for magneto, CD ignition or 12-/24-V battery.
The M2582 is a 1-inch (25 mm) valve with one NPT connection. It has one SPDT snap-switch. The valve body is made of sandcast aluminum. It does not include the open/close indicator button.
The M5081 is a 2-inch (51 mm) valve with two NPT connections. It has two SPDT snap-switches. The valve body is available in sandcast aluminum or cast steel (optional).
The M5081FS is the same as the M5081 but has a normally energized circuit. This circuit allows the valve to be held open electrically and close by interruption of the coil's power circuit. A manual trip knob is not available on this model. An optional 2-inch (51 mm) steel flange pipe connection is available for M5081 and M5081FS steel body models (see Dimensions).
Options and Accessories
Diode Package (65010065)
The FW Murphy 202 V diode package is designed to allow the fuel shutoff valve to be used with dual Magneto Ignition systems. Sold separately (see How to Order).
Magnetic Switch Adapter
As ignition systems wear from usage, their power output becomes less and less. Ignition may not have the capacity to reliably trip the fuel valve. Therefore, the use of a Magnetic Switch Adapter for CD ignition systems is recommended. The adapter stores energy from the CD ignition to trip the fuel valve. Two models are available:
- 65700053 (65020126): For Negative Ground CD Ignitions up to 240 VDC
- 65700055 (65020155): For Negative Ground CD Ignitions 240 VDC to 450 VDC
规格参数
- Valve Body: Sandcast aluminum, painted red (corrosion resistance). Optional cast steel available for M5081 and M5081FS models only.
- Valve Seat: Buna-N
- Maximum Pressure Rating:
- M2582: 80 psig (552 kPa) [5.52 bar]
- M5081: 100 psig (689 kPa) [6.89 bar]
- M5081FS: 100 psig (689 kPa) [6.89 bar]
- Coil Rating: Intermittent duty; coil type must match power source;
- CD ignition coil resistance: 72 Ω
- CD primary voltage current: 1.38 to 3.8 A
- M5081FS model: Energized to run (continuous-duty coil) coil resistance:
- 12 Volt model: 33 Ω (0.36 A)
- 24 Volt model: 136 Ω (0.17 A)
- Magneto ignition coil resistance: 0.5 Ω
- Magneto primary voltage current: 1 to 5 A
- Battery coil resistance: 7 Ω
- 12 or 24 VDC: 1.2 to 2.4 A
- Wiring (See Internal Wiring):
- M2582: Wire leads
- M5081 and M5081FS: Terminal blocks
- Snap-switch Rating: 5 A @ 480 VAC
- Laboratory Approval: CSA listed for Class I, Groups C and D Hazardous Locations. 5 amps maximum; intermittent duty; models M5081 and M5081-CD engine ignition powered and model M5081-B, 12 or 24 VAC or VDC; switch contacts rated 5 A @
- 480 VAC maximum
Shipping Information
Shipping Weights:
? M2582: 5 lbs 8 oz. (2.49 kg)
? M5081: 14 lbs 8 oz. (6.58 kg)
? M5081-2: 40 lbs (18.14 kg)
? M5081-3: 56 lbs (25.40 kg)
? M5081FS: 14 lbs 8 oz. (6.58 kg)
? M5081FS-2: 40 lbs (18.14 kg)
? M5081FS-3: 56 lbs (25.40 kg)
Shipping Dimensions:
? M2582: 8 x 8 x 7 in. (203 x 203 x 178 mm)
? M5081: 12 x 12 x 9-5/16 in. (305 x 305 x 237 mm)
? M5081-2: 12 x 12 x 9-5/16 in. (305 x 305 x 237 mm)
? M5081-3: 18 x 12 x 13-1/2 in. (457 x 305 x 343 mm)
? M5081FS: 12 x 12 x 9-5/16 in. (305 x 305 x 237 mm)
? M5081FS-2: 12 x 12 x 9-5/16 in. (305 x 305 x 237 mm)
? M5081FS-3: 18 x 12 x 13-1/2 in. (457 x 305 x 343 mm)
产品技术资料下载
For more information about this product, you can download the related literature here:
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