TM 55-4920-428-13
(3) The valve mounting is an inline type. Port openings are ¼ in. with standard machine thread.
The valve body is steel. Seals have a pressure rating of 5000 psi.
m. HIGH PRESS REGULATOR., (See
fig. 1-3.)
(1) The HIGH PRESS REGULATOR is on the panel to the right of the HIGH PRESS gage. The
control knob is above the panel. The valve body is accessible from below the panel.
(2) The valve is pilot operated, inline type. Port openings are ¼ in. with standard machine
thread. The unit is rated at 3000 psi and 6 gpm flow maximum. The valve is steel. The valve seals are
synthetic rubber with teflon retaining rings.
n. SYS 1 and 2 Selector Valves. (See fig. 1-3.)
(1) The six selector valves marked are panel mounted at the near side of the panel. The control
handles are above the panel. The valve bodies are accessible from below the panel.
(2) The valves are low torque, three-position units. Ports are on the bottom, ¼ in. with standard
machine thread. Rated pressure is 3000 psi. Valve bodies and handles are aluminum.
o. HIGH and LOW PRESS RELIEF VALVES. (See
fig. 1-3.)
(1) The relief valves are mounted in the panel with push-to-relieve buttons above the panel. Valve
bodies are accessible from below. The HIGH PRESS valve is near the cycle motor. The LOW PRESS
valve is near the LOW PRESS gage.
(2) The valves are spring-loaded push-to-open two-way type. Maximum working pressure is 6000
psi. The valve body is aluminum, the slide is steel, and the knob plastic.
p. Pressure Redwing Valve VR6. (106, Fig. 6-5.)
(1) The pressure reducing valve is under the panel, below the cycling motor.
(2) The valve is a direct pressure operated poppet-type pressure-relief valve. The pressure adjust-
ment is a set screw with a protective cap. Adjustment range is 0 to 1500 psi, but it is adjusted for 285 to
315 psi. Rated pressure is 6000 psi.
q. Check Valves, 60 PSI. (95, Fig. 6-5.)
(1) Two check valves are located below the panel, one on each side of the LOW PRESS REGULA-
TOR.
(2) The valves are non-adjustable inline type, and cracks at 60 psi. Rated pressure is 3000 psi.
r. Check Valve, 3 PSI. (98, Fig. 6-5. )
(1) The check valve is in the return system under the ILCA manifold.
(2) The valve is a non-adjustable inline type, and cracks at 3 psi. Rated pressure is 5000 psi.
s. LOWPRESS Gage. (See fig. 1-3.)
(1) The LOW PRESS gage is at the left end of the panel. Mounting hardware and connections are
accessible from below.
(2) The dial is marked 0 to 600 psi with 5-psi scale divisions. The gage is accurate within
t. HIGH PRESS Gage. (See fig. 1-3.)
(1) The HIGH PRESS gage is at the right end of the panel. Mounting hardware and connections
are accessible from below.
psi.
u.
1-8
(2) The dial is marked 0 to 5000 psi with 50-psi scale divisions. The gage is accurate within
Snubber, HIGH PRESS Gage. (72, Fig. 6-5.)
