MIL-PRF-46720C
3.3.5.2 Type II. The rated flow capacity of the valve using hydraulic fluid (see 6.3) shall
be 3.5 gal/min (0.22 L/s) with a pressure drop across the valve to be not more than 60 psi
(413.7 kPa).
3.3.6 Proof pressure.
3.3.6.1 Type I. The valve shall withstand a proof pressure of 4500 psi (31 026 kPa),
except the return port shall withstand a proof pressure of 1500 psi (10 342 kPa), without leakage
or damage.
3.3.6.2 Type II. The valves shall withstand a proof pressure of 4500 psi (31 026 kPa)
without external leakage or damage.
3.3.7 Burst pressure.
3.3.7.1 Type I. The valve ports shall withstand hydraulic pressure of 7500 psi
(51 710 kPa), except the return port shall withstand pressure of 2500 psi (17 237 kPa) without
bursting.
3.3.7.2 Type II. The valve shall withstand hydraulic pressure of 7500 psi (51 710 kPa)
without bursting.
3.3.8 Leakage.
3.3.8.1 Pressure port.
3.3.8.1.1 Type I. The valve, in the de-energized position, shall withstand hydraulic
pressures up to and including 3000 psi (20 685 kPa) applied at the pressure port. Resultant
combined internal leakage from cylinder number 2 port and return port shall be not greater than
0.0035 cubic feet per minute (ft3/min) (10 cubic centimeters per minute (cm3/min)), with no
external leakage.
3.3.8.1.2 Type II. The valve, in the energized position, shall withstand hydraulic-
pressures up to and including 3000 psi (20 685 kPa), applied at one port, with resultant internal
leakage from the other port not in excess of 0.0018 ft3/min (5 cm3/min).
3.3.8.2 Return port (type I only). The valve, in the de-energized position, shall withstand
application of hydraulic pressure of 10 psi (69 kPa) at the return port and cylinder number 2 port
without external leakage.
5
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business