Part numbering of Interchangeable parts

Page Title: Part numbering of Interchangeable parts
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MIL-F-27656C(USAF)

3.6.1 Part numbering of Interchangeable parts. All parts having the same manufacturer's part number

shall be functionally and dimensionally Interchangeable. The item identification and part number require-

ments of MIL-STD-100 shall govern the manufacturer's part numbers and changes thereto.

Weight. The dry weight of the filter unit shall not exceed 55 pounds.

3.6.2

3.7 Operational markings.

3.7.1 Direction of flow. The direction of flow shall be clearly and permanently indicated by at least two

arrows marked on opposite sides of the housing or ports, or the ports shall be clearly marked INLET and

OUTLET.

3.7.2 Instruction placard. Each filter unit shall be provided with a placard which car be permanent)

mounted The placard shall describe installation and maintenance procedures and shall show an illustrated

part breakdown.

3.7.3 Identification of product. The filter unit shall be marked for identification m accordance with

MIL-STD-130 and as follows.

Manufacturer's part number. The manufacturer's part number and drawing number shall be

the same.

Housing Nameplate. The housing nameplate shall be permanently marked with the following

information:

Fluid Specification: MIL-H-5606

Maximum Flow: 30 gpm (Type I) or 35 gpm (Type II)

Maximum Pressure: 3000 psi (Type I)

or 5000 psi (Type II)

Procurement Data:

3.7.4 Replaceable element. The replaceable element shall be permanently marked with the following

information. If marked on a sealing surface, the markings shall not affect the sealing of the element.

Manufacturer's part number:

Manufacturer's name or trademark:

Cleanable or noncleanable (as applicable):

Element rating: 5 micron absolute

Fluid Specification: MIL-H-5606

Procurement Data.

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