MIL-DTL-28788/1D
TABLE I. Operating characteristics.
Switch role rates
Pressure drop during flow
Port size
Actuation
Deactuation
Military Part
Increasing
decreasing
PSIG
Rated flow
Number
GPM (max) at
GPM (min)
(max)
GPM
Inlet
Outlet
104°F ± 9°F
at 104°F ± 9°F
M28788/1-1
-6
-6
.85
.60
5
1.00
-2
-6
-6
.42
.27
5
.50
-3
-6
-6
.60
.40
4.5
.66
-4
-6
-6
.65
.45
5
.75
-5
-8
-8
3.70
2.90
5
4.00
-6
-6
-6
1.30
1.00
5
1.50
-7
1.80
1.50
2.00
-6
-6
5
-8
2.30
2.00
2.50
-6
-6
5
-9
2.70
2.40
3.00
-8
-8
5
-10
3.70
3.20
4.00
-8
-8
7
-11
4.50
4.00
5.00
-8
-8
7
-12
5.40
4.00
6.00
-8
-8
7
-13
-8
-8
.85
.75
5
1.00
REQUIREMENTS:
Mounting: See figure 1.
Termination: Connector MS33678-10SL-3P.
Weight: 1.6 pounds (725.76 grams) approximate.
Calibration: See table I.
Media: Water.
Ports: See table I.
Proof flow: 225 percent of rated flow.
Differential pressure: See table I.
Working pressure: 25 to 75 PSIG.
Proof pressure: 150 PSIG.
Burst pressure: 300 PSIG.
Temperature range:
Working: 32°F to 185°F.
Nonworking: -65°F to +200°F.
2
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