MIL-DTL-24694 Valve, Hydraulic Relief, 1.5 - 35 Bars \(22 - 500 Pounds Per Square Inch\) Cartridge Type, General Specification \(Metric\)This specification covers the requirements for cartridge-type relief valves for use in hydraulic systems with a maximum operating pressure of 35 bars [500 pounds per square inch \(lb/in2\)].

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MIL-DTL-24694A(SH)

3.4.2 Special tools. Valves shall be adjustable throughout the pressure range without the use of special tools.

The adjustment type, either external or internal, shall be as identified in the applicable specification sheet (see 3.1).

[Special tools are those tools not listed in the Federal Supply Catalog, copies of which may be consulted in the

Office of the Defense Contract Administration Services Management Area (DCASMA)].

3.4.3 Safety. Hand-adjustable threaded parts subject to tampering shall be securely locked by safety wiring or

self-locking nuts. Safety wire shall be applied in accordance with NASM33540 and shall conform to NASM20995.

Star washers, lock washers, and jam nuts shall not be used as locking devices. Internal fasteners shall have features

which prevent them from coming loose and interfering with system operation.

3.5 Performance. Valves shall perform as specified in 3.5.1 through 3.5.10.

3.5.1 Operating pressure. The valve shall meet the requirements specified herein at operating pressures

specified in the applicable specification sheet (see 3.1) and specification part number (see 6.2).

3.5.2 Rated flow. Rated flow shall be in accordance with the values shown on the applicable specification

sheet and shall occur at a differential pressure not greater than that shown on figure 1 for any nominal set pressure.