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
Description
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.
Basic Operation
Automatic:
As the control pressure/vacuum
increases the valve will open. When the control
pressure/vacuum decreases, the valve will close.
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.
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].
The M5180-P
is for 2 in. (52 mm) gas lines.
It automatically 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 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].
Specifications
Valve Body:
Sandcast aluminum
(alodined for corrosion resistance).
Optional steel body available on M5180-P
models only (see
How to Order
).
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]
Parts Exposed to Gas Line Flow:
M2582-P:
•
Aluminum
•
Buna-N
•
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.
Control Pressure (Maximum):
M2582-P:
75 psi (517 kPa) [5.17 bar]
M5180-P:
80 psig (552 kPa) [5.52 bar]
How to Order
To order, use the diagram below.
______ – __
Model M2582-P
®
MURPHY
MATIC
Model
M2582-P
M5180-P
Body
Blank
= Aluminum
2
= Steel (applies to M5180-P)
PV-94129B
Revised 04-00
Catalog Section 55
(00-02-0126)
Pneumatic Valves for
Fuel Gas Shutoff
Warranty
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
www.fwmurphy.com/support/warranty.htm
