DESCRIPTION
A range of 3”, 5” and 8” bore slim butterfly air intake shut down valves with air pressure actuated shut down
combined with manual reset and the optional addition of manual shut down. Suitable for both hazardous
and non-hazardous area applications. MPX valves are available in basic flange mounted form or fitted with
hose adaptors. Valve body and disc are manufactured in corrosion resistant hard anodised aluminium with
PTFE coating. The valve spindle and mechanism is made from stainless steel.
1/8" NPT for
connecting air
pressure supply
Optional Hose
Adaptors
C1
C2 (min)
C2 (max)
Reset Lever
B
A
Valve Types MPX-300, MPX-500 and MPX-800
(Air Pressure Shut Down, Manual Reset)
Main Dimensions (mm)
Valve Type
MPX-300
MPX-301
MPX-302
MPX-303
MPX-310
MPX-500
MPX-501
MPX-502
MPX-503
MPX-510
MPX-800
MPX-801
MPX-802
MPX-803
Nominal Bore
Diameter
76 (3”)
127 (5”)
203 (8”)
minimum & maximum
A
190.0
207.0
190.0
223.0
246.0
263.0
246.0
279.0
346.5
362.0
346.5
377.5
B
111.5
167.0
257.0
C1
37.5
45.5
56.0
C2
82.5 to 112.5
102.0 to 157.5
136.5 to 185.5
Notes:
Maximum temperature of the engine intake air at the MPX valve not to exceed 150°C. (See also
‘Installation” - page 5).
For alternative types of air pressure actuated Chalwyn valves see brochure CE218.
2
MPX DIESEL ENGINE SHUTDOWN VALVES
CE236 (9)
T: +44 (0)1284 715739
Valve models MPX-310 and MPX-510 have a
built-in microswitch. This enables an indica-
tion of the valve open/close status. The micro-
switch connections are made as follows:
Brown = supply - common
Blue = makes circuit when valve is closed
Black = make circuit when valve is open
Maximum rating of microswitch at 12 or
24 V = 2 amp
