MS28766B
Part or Identifying Number (PIN). The valve shall have a corrosion resistant identification plate permanently attached to the valve. The plate shall include the part number consisting of the following (in sequence):
1. The basic MS number.
2. The material CRES or aluminum.
3. A tubing size in dash number from table I.
Example: MS28766 CRES -8
Tubing size
(eg., -8 = .500 tubing
Material, CRES for corrosion resistant steel or AL for aluminum
Basic MS number
NOTES:
Intended use: This direct mounted type I valve is intended for use in the aircraft type II hydraulic power systems to provide emergency fluid due to loss of pressure in the normal service lines. The valve is mounted directly on the aircraft in accordance with
SAE-AS5440. This valve is currently used in military aircraft and is military unique because of the specific design and dimensions which is not available for commercial aircraft.
Change from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes.
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