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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 pneumatically controlled fuel shut-off valves that open
and close automatically or semi-automatically. 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 automatically, 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 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 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
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M2582-P Dimensions
M5180-P Dimensions
Shipping Weights
M2582-P: 5 lbs 10 oz (2.55 kg).
M5180-P: 14 lbs 9 oz (6.61 kg).
With steel body option “2”; 25 lbs (11.34 kg).
Shipping Dimensions
M2582-P: 8-1/4 x 8-1/4 x 7-1/2 in.
(210 x 210 x 191 mm).
M5180-P: 12-1/4 x 12-1/4 x 9-3/4 in.
(311 x 311 x 248 mm).
M2582-P Flow
Characteristics
Laboratory Test
Inches water column (∆p) drop across valve
Millimeters water column in brackets [ ]
Standard cubic feet per hour
Cubic meters per hour in brackets [ ]
M5180P
Handle and Latch Kit
55000147
55000148
55000154
55000135
Stem and Seat Kit
55000150
55000155
Top Works Complete Valve Less Body & Vent
55000132
55000153
55050420
Vent Bushing Assembly
Diaphragm Assembly
Pilot Diaphragm
Service Parts
Specify part number when ordering.
M2582P
55000143
55000184
00007908
PV-94129B page 2 of 2
CONTROL SYSTEMS & SERVICES DIVISION
P.O. Box 1819; Rosenberg, Texas 77471; USA
+1 281 633 4500 fax +1 281 633 4588
e-mail sales@fwmurphy.com
MURPHY DE MEXICO, S.A. DE C.V.
Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
San Luis Potosí, S.L.P.; México 78384
+52 444 8206264 fax +52 444 8206336
Villahermosa Office +52 993 3162117
e-mail ventas@murphymex.com.mx
www.murphymex.com.mx
FRANK W. MURPHY, LTD.
Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.
+44 1722 410055 fax +44 1722 410088
e-mail sales@fwmurphy.co.uk
www.fwmurphy.co.uk
MURPHY SWITCH OF CALIFORNIA
41343 12th Street West
Palmdale, California 93551-1442; USA
+1 661 272 4700 fax +1 661 947 7570
e-mail sales@murphyswitch.com
www.murphyswitch.com
In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.
MACQUARRIE CORPORATION
1620 Hume Highway
Campbellfield, Vic 3061; Australia
+61 3 9358 5555 fax +61 3 9358 5558
e-mail murphy@macquarrie.com.au
FW Murphy
P.O. Box 470248
Tulsa, Oklahoma 74147 USA
+1 918 317 4100
fax +1 918 317 4266
e-mail sales@fwmurphy.com
www.fwmurphy.com
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USA–ISO 9001:2000 FM 28221
UK–ISO 9001:2000 FM 29422
Printed in U.S.A.
1/4 in. (6 mm) tube
connection; control
pressure 3 psi (21 kPa)
[.21 bar] minimum,
75 psi (517 kPa)
Latch Arm (see NOTE)
Breather/Vent
1/16 in. (2 mm)
1 NPT
(2 places)
1/4 NPT.
Vent and
Plug
3-3/32 in.
(79 mm)
5-1/2 in. (140 mm)
NOTE: Thumb operated opening latch (2.5 psi [17 kPa]
[.17 bar] required to release cocking latch)
[5.17 bar] maximum.
6-9/16 in.
(167 mm)
10.0
[254.0]
9.0
[228.6]
8.0
[203.2]
7.0
[177.8]
6.0
[152.4]
5.0
[127.0]
4.0
[101.6]
3.0
[76.2]
2.0
[50.8]
1.0
[25.4]
250
[7.08]
500
[14.16]
0
1000
750
[28.32]
[21.24]
1250
[35.40]
4 oz. (.11 kg.)
1500
[42.48]
10 oz. (.28 kg.)
5 psig (34 kPa) [.34 bar]
10 psig (69 kPa) [.69 bar]
1750
2000
[56.64]
2250
[63.72]
[4956]
20 psig (138 kPa) [1.38 bar]
30 psig (207 kPa) [2.07 bar]
2500
[70.80]
2750
[77.88]
3000
[84.96]
Latch Arm (see NOTE 2)
Breather Vent
(see NOTE 1)
2 NPT
(2 places)
Vent and Plug
1/2 NPT
9-3/8 in. (238 mm)
NOTE 1: Control pressure connection fitting and breather vent fitting can be swapped to convert to vacuum control.
NOTE 2: Thumb operated opening latch (2.5 psi [17 kPa] [.17 bar] required to release cocking latch).
10-7/16 in. (265 mm)
1/4 in. (6 mm)
connection;
control pressure
3 psi (21 kPa)
[.21 bar] minimum,
80 psi (552 kPa)
[5.52 bar] max.
(see NOTE 1)
4-1/4 in.
(108 mm)
6-1/8 in.
(156 mm)
4-3/8 in.
(111 mm)
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