Murphy M2582-P, M5180-P User Manual

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

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
[phone] fax [phone]

e-mail [e-mail]

MURPHY DE MEXICO, S.A. DE C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
San Luis Potosí, S.L.P.; México 78384
[phone] fax [phone]
Villahermosa Office [phone]
e-mail [e-mail]
www.murphymex.com.mx

FRANK W. MURPHY, LTD.

Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.
[phone] fax [phone]
e-mail [e-mail]
www.fwmurphy.co.uk

MURPHY SWITCH OF CALIFORNIA

41343 12th Street West
Palmdale, California 93551-1442; USA
[phone] fax [phone]
e-mail [e-mail]
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
[phone] fax [phone]

e-mail [e-mail]

FW Murphy

P.O. Box 470248
Tulsa, Oklahoma 74147 USA
[phone]

fax [phone]
e-mail [e-mail]

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)