Specifications

Engine Protection 61
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Mechanical Pressure SWICHGAGE
®
|
Order No. Mfg. PN Description Price
VWC Series Air Filter Restriction SWICHGAGE
®
For use with dry air filters. As the air filter deteriorates, the air inflow will decrease
creating increased vacuum between the air filter and the carburetor. The vacuum is
monitored by the SWICHGAGE
®
which gives a visual readout of the lter condition. Can be used
on any type of dry air lters for gasoline or diesel engines. Particularly useful for engines operat-
ing in dusty environments such as agriculture and construction. Standard model has a range of
0-30” of water restriction. 2 ½” dial, 2 1/6” mounting hole, not lit.
E67970 20VWC-30 0-30” $107.95
DP Series Fuel, Air, or Water Restriction SWICHGAGE
®
This model is a diaphragm - actuated, differential pressure - indicating gauge, with a built-in
electrical switch. This switch is used for tripping alarms and/or shutting down equipment.
This SWICHGAGE
®
is intended to monitor and indicate oil, fuel or water lter restriction and
can reduce the risk of dangerously high pressure which may rupture the lter, resulting in
contaminants entering the system. 50 P.S.I.D. is the standard; other ranges are available. Call
for assistance in choosing ranges and factory settings. 2 ½” dial, 2 1/6” mounting hole, not lit.
E67990 20DP-50 50 P.S.I.D. $143.95
20PV Series Turbo Boost SWICHGAGE
®
A combination instrument gauging both vacuum and pressure. Designed to monitor turbo-charged
engines, this gauge can be used in any situation requiring a combustion pressure/vacuum gauge
with built-in limit switching. Features high and low contacts. Range 5 psi to 20” Hg. 2 ½” dial, 2
1/6” mounting hole, not lit.
E67980 PV-HL Turbo Boost $79.95
Typical Shutdown Systems
The MURPHYGAGE
®
Not Just Another Pretty Gauge!
Qu al it y des ign , mat er ia ls , an d
manufacturing make the MURPHYGAGE
®
a superior gauge that will give long and
reliable service.
The MURPHYGAGE
®
VS. Other
Gauges
Most gauges rely on the gauge case to
serve as part of the sensing chamber. The
MURPHYGAGE
®
does not. The diaphragm
expands and contracts constantly with
changing pressures or temperatures.
It is held precisely in place by part and
mounting plate, An almost non-distortable
pressure chamber is formed by the
port and mounting plate, protecting the
sensitive beryllium copper diaphragm
from damage. This is one of the prime
differences between MURPHYGAGE
®
instruments and “other” gauges.
In most gauges the diaphragm and an
expansion retarding plate are soldered
directly into the case port and held in
place by a locator ring. Should the case
receive any damage in this area, the
diaphragm operation could be affected.
In the MURPHYGAGE
®
, however, the
diaphragm is protected and securely
locked in position. Another feature of
the MURPHYGAGE
®
is the removable
pulsation damper (pressure instruments
only) which provides for periodic cleaning
when being used with liquids which might
cause clogging. Other gauges are usually
equipped with a non-removable damper.
20VWC-30
20DP-50 PV-HL DHK-A-72-D-G