MIL-PRF-25675C
6.3 Qualification. The attention of the contractors is called to the requirements with respect to products requiring
qualification. Awards will be made only for products which are, at the time of award of contract, qualified for
inclusion in the Qualified Products List (QPL No. 25675) whether or not such products have actually been listed by
that date. In order that the manufacturers may be eligible to be awarded contracts or purchase orders for the products
covered by this specification, they are urged to arrange to have the products that they propose to offer to the Federal
Government tested for qualification. Information pertaining to qualification of products may be obtained from
Oklahoma City Air Logistics Center/TICLA, 3001 Staff Drive, Suite 1AE1-101A, Tinker AFB, Oklahoma 73145-
3036.
6.4
Hydraulic Systems. MIL-H-8891, "Hydraulic Systems, Manned Flight Vehicles, Type III Design, Installation
And Data Requirements For, General Specification For" is used for guidance on hydraulic systems.
6.5
Definitions.
6.5.1
Checking time. The time between the release of the poppet and the cessation of fluid flow.
6.5.2 Cracking pressure. The pressure at which the poppet is unseated allowing a flow of 2 drops per minute
through the valve in the free flow direction.
6.5.3
Flexing. The back and forth motion induced by vibration.
6.5.4 Flow cycle. A flow cycle consists of a 5-second surge, an increase in pressure up to the maximum rated
pressure, in free-flow and a 5-second surge in reverse flow.
6.5.5 Impulse cycle. Consists of rated flow through the valve followed by a reversal of the direction of flow and the
application of maximum rated pressure.
6.6
Part or identifying number (PIN). The PIN to be used for valves acquired to this specification are created as
follows:
M
25675-
X
X
Prefix for Military
Specification
Type
Size
Specification
Number
(blank) Flareless
See Figures 1 & 2
F
Flared
6.7
Supersession information. This standard supersedes the following documents:
MIL-V-25675B dated 13 May 1968.
MS24423C dated 15 July 1988.
MS24593D dated 14 Feb 1986.
6.8
Changes from previous issues. Marginal notations are not used in the revision to identify changes with respect
to the previous issue due to the extent of the changes.
9
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business