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15.42
Subject to technical modifications without notice
DE-STA-CO
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Check Valves
500173DE
500174DE
The SAE-4 (part number 500173DE) “T” port
Check Valve
is recommended on single-acting
circuits where there is more than one directional valve per power source. These check
valves are ideal for use in circuits where return line pressure fluctuations may affect
released clamps.
Use this anytime a return line pressure spike could cause unclamped actuators to move
and affect operator safety. They are designed specifically for DE-STA-CO’s No. 100969DE
Directional Control Valves
.
The SAE-4 (500174DE) “P” port check valve is required on all single-acting or double-acting
circuits where there is more than one directional valve per power source. These check
valves prevent power source pressure fluctuations from affecting the pressure in clamped
circuits. Without this check valve, shifting the directional control valve in one circuit will
cause a temporary loss of clamping pressure in the other circuit.
“T” Port Check Valve
(500173DE)
“P” Port Check Valve
(500172DE, 500174DE)
D
A
C
E
D
A
B
C
E
D
A
Free
Flow
B
C
E
Free
Flow
Free
Flow
Free
Flow
D
A
C
E
D
A
C
E
D
A
B
C
E
D
A
Free
Flow
B
C
E
Free
Flow
Free
Flow
Free
Flow
D
A
C
E
500173DE
500174DE
Cat. no.
Specifications
Dimensions (In Inches)
Check
Valve Location
Cracking
Pressure
(PSI)
Use With
Directional
Valve No.
A
B
C
Thread
Size
D
Thread
Size
E
Hex
500173DE
Outlet
2
100969
1.431
1.071
7
⁄
16
-20UNF
SAE-4
7
⁄
16
-20UNF
SAE-4
0.625
500174DE
Inlet
1.065
0.705
15_StrongHold.qxp:15_DES_StrongHold-1-14.indd 1/2/08 9:04 AM Page 15.42