MIL-DTL-46725D(AT)
3.2.1 Construction. The valve shall be constructed to the form and dimensions shown on
the applicable drawing listed in table I. The shape is optional within the maximum dimensions.
TABLE I. Applicable drawings.
Valve Valve
Drawing
Type Class
Number
I
-
9093264
II
A
9098279
B
9094352
3.2.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered,
or environmentally preferable materials should be used to the maximum extent possible provided
that the material meets or exceeds the operational and maintenance requirements, and promotes
economically advantageous life cycle costs.
3.3 Operating requirements. Each valve shall provide the following functional,
operational, and performance capabilities.
3.3.1 Flow rate and pressure drop.
3.3.1.1 Type I. The flow rate shall be 7.6 L/min (2 gal/min) through any interconnected
ports with no more than 1034 kPa (150 psi) pressure drop across the valve.
3.3.1.2 Type II. The flow rate of class A valves shall be 7.6 L/min (2 gal/min) through
any interconnected ports, with less than 689 kPa (100 psi) pressure drop across the valve. The
flow rate of class B valves shall be 22.7 L/min (6 gal/min) with less than 1724 kPa (250 psi)
pressure drop across the valve.
3.3.2 Operating torque.
3.3.2.1 Type I. The maximum operating torque shall be 5.6 Newton-meters (N-m)
[50 pound-inches (lb-in.)] with 20 684 kPa (3000 psi) applied at the pressure port.
3.3.2.2 Type II. The maximum operating torque shall be 2.8 N-m (25 lb-in.) for class A
valves, and 5.9 N-m (52 lb-in.) for class B valves, with 20 684 kPa (3000 psi) hydraulic pressure
applied at the pressure port.
3.3.3 Normal operating pressure. The valve shall operate satisfactorily throughout a
hydraulic pressure range of 0 to 20 684 kPa (3000 psi) applied to any port, except the return port,
while using hydraulic fluid conforming to MIL-PRF-6083.
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