MIL-DTL-24694A(SH)
BARS
LB/INē
69.0
1000
55.2
800
DIFFERENTIAL PRESSURE
AT MAXIMUM RATED FLOW
600
41.4
NOMINAL SET PRESSURE
34.5
500
DIFFERENTIAL PRESSURE
27.6
400
AT MINIMUM RESEAT
20.7
300
13.8
200
100
6.9
5.5
80
60
4.1
50
3.4
40
2.8
30
2.1
20
1.4
0.7
10
NON-DIMENSIONAL AXIS
NOTE:
1.
Select differential pressure from the nominal set pressure curve, draw line vertically to obtain the differential
pressure at maximum rated flow or at minimum reseat condition.
FIGURE 1. Low pressure hydraulic relief valve performance.
3.5.3 Proof pressure. The valve shall withstand a proof pressure of 69 bars (1000 lb/in) without external
leakage, failure, or permanent set (see 4.6.2). If a spring is used that permits a pressure setting beyond 35 bars
(500 lb/in2), the proof pressure shall be 200 percent of the maximum pressure setting.
3.5.4 Internal leakage.
5
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