AN6279 Rev 7
Metric equivalents millimeters liters per minute (LPM)
Rated
PIN
H
A
B
C
D
E
F
G
K
flow
Tubing
Max
Max
±.005
Max
±.005
LPM
OD
reference
min
AN6279-4XX
6.35
112.71
53.98
33.34
38.10
33.33
33.34
41.28
44.45
4.54
AN6279-6XX
9.53
125.41
60.33
44.45
41.28
38.10
38.10
46.05
50.80
13.2
AN6279-8XX
12.70
149.23
69.85
47.63
50.80
44.45
44.45
53.98
60.33
22.7
AN6279-12XX
19.05
184.15
92.08
66.68
57.15
53.98
53.98
73.03
82.56
60.6
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. Unless otherwise specified tolerances for three place decimals ±.010 inch (0.25 mm).
FIGURE 1. Valve - hydraulic pressure relief two port - Continued.
REQUIREMENTS
Dimensions, see figure 1.
PIN, see table I.
TABLE I. PIN.
PIN
Pressure range PSI
100 - 1000
1000 2300
2300 3850
AN6279-4YZ
AN6279-4AB
AN6279-4CD
AN6279-6YZ
AN6279-6AB
AN6279-6CD
AN6279-8YZ
AN6279-8AB
AN6279-8CD
AN6279-12YZ
AN6279-12AB
AN6279-12CD
Canceled PIN's. PIN's AN6279 -4Y, -6Y, -8Y, -12Y, -4Z, -6Z, -8Z and -12Z are canceled after 27
August 1953. There are no superseding AN PIN's.
Valve cracking pressure. For contractor's procurement only, the valve cracking pressure (as a code
number in pounds per square inch) may be impressed on a lead seal or equivalent. And attached to
the lockwire of the adjusting nut, in order to indicate a specified cracking pressure. The relief valve
nameplate and applicable government records such as parts catalogs, spares, documents, etc. shall
not contain this coded number indicating pressure setting. The services shall not procure or stock
valves adjusted to any specific cracking pressure.
Pressure setting notation. Notations on aircraft contractor's assembly and installation drawings shall
contain the proper AN number, as shown in table I, followed by the pressure setting parenthetically
listed.
PIN example for government use: AN6279-6CD indicates a valve for pressure range 2300 to 3850
PSI, 3/8 inch tubing OD.
PIN example for contractor's drawings: AN6279-6CD(3400) indicates a valve for pressure range 2300
to 3850 PSI, 3/8 inch tubing OD, cracking pressure 3400 PSI.
2
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business