Murphy Pneumatic Valves M5180 P User Manual

PV-94129B  
Revised 04-00  
Catalog Section 55  
(00-02-0126)  
Pneumatic Valves for  
Fuel Gas Shutoff  
Models M2582-P  
and M5180-P  
Pneumatically Open and Shut Off Fuel Gas  
Automatically or Semi-automatically  
Pneumatic Control Pressure Can Be  
Air, Gas or Oil  
Models for 2 in. or 1 in. (51 mm or  
25 mm) Fuel Gas Lines  
MURPHY  
MATIC  
Model M2582-P  
®
bar] and fully opens the seat at 3 psi (21 kPa) Control Pressure (Maximum):  
Description  
[.21 bar]. The valve can be manually opened  
with lever and latched against inlet pressure  
of 100 psi (689 kPa) [6.89 bar]. The latch will  
release after pilot pressure reaches 2.5 psi (17  
kPa) [.17 bar].  
M2582-P: 75 psi (517 kPa) [5.17 bar]  
The M2582-P and M5180-P are pneumatical-  
ly controlled fuel shut-off valves that open  
and close automatically or semi-automatical-  
ly. The pneumatic control pressure can be air,  
oil or gas. A manual lever aids in opening the  
valve when control pressure is insufficient. A  
gas escape vent, when properly vented and  
maintained, releases trapped gas from the  
valve after shutoff.  
M5180-P: 80 psig (552 kPa) [5.52 bar]  
How to Order  
To order, use the diagram below.  
Specifications  
Valve Body: Sandcast aluminum  
(alodined for corrosion resistance).  
Optional steel body available on M5180-P  
models only (see How to Order).  
______ – __  
Model  
Basic Operation  
Automatic: As the control pressure/vacuum  
increases the valve will open. When the control  
pressure/vacuum decreases, the valve will close.  
M2582-P  
M5180-P  
Valve Seat: Buna-N  
Valve Inlet Pressure (Maximum):  
M2582-P: 80 psi (552 kPa) [5.52 bar]  
M5180-P: 100 psi (689 kPa) [6.89 bar]  
Semi-Automatic: If the control pressure/vacuum  
is too low and the valve does not open automat-  
ically, it can be opened manually by lifting the  
built-in lever arm and setting the latch. The  
latch resets automatically when control pressure  
rises enough to release it.  
Body  
Blank = Aluminum  
2 = Steel (applies to M5180-P)  
Parts Exposed to Gas Line Flow:  
M2582-P:  
Aluminum  
Warranty  
Buna-N  
M2582-P is for 1 in. (25 mm) gas lines. It auto-  
matically opens at 2 psi (14 kPa) [.14 bar] and  
fully opens the seat at 3 psi (21 kPa) [.21 bar].  
The valve can be manually opened with the  
lever and latch against inlet pressure of 80 psi  
(552 kPa) [5.52 bar]. The latch will release after  
pilot pressure reaches 2.5 psi (17 kPa) [.17 bar].  
A limited warranty on materials and workmanship  
is given with this FW Murphy product. A copy of  
the warranty may be viewed or printed by going to  
302, 303, and 17-7 PH stainless steel  
M5180-P:  
Aluminum (Steel optional)  
Buna-N  
302, 303, 304, and 416 stainless steel  
Control Diaphragm: Flexweave polyester  
fabric and Buna-N elastomer.  
The M5180-P is for 2 in. (52 mm) gas lines.  
It automatically opens at 2 psi (14 kPa) [.14  

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