4. The direct operated pressure relief valve series EVSA is a seated type valve for screw-in mounting. It is available in two sizes and three pressure stages.
The direct operated pressure relief valve series EVSA is a seated type valve for screw-in mounting. It is available in two sizes and three pressure stages. Function When the pressure in port P exceeds the setting pressure the cone opens to port T and thus limits the pressure in port P to the adjusted level. The integrated damping spool prevents pressure fluctuations in the transition region. The pressure is set by the adjusting screw, which is locked by the clamping screw. The setting can optionally be secured by a cylinder lock (DIN lock). Features • Seated type valve • Screw-in mounting • 3 pressure stages • 2 adjustment modes - screw with lock nut - DIN lock
Note The spring must be unloaded when the EVSA is screwed out of the manifold.
Technical data General Design Nominal size Interface Mounting position Ambient temperature Weight Hydraulics Max. operating pressure Pressure stages Nominal flow Fluid Fluid temperature Viscosity permitted recommended Filtration
4
Direct operated relief valve, seated type NG06 Screw-in mounting unrestricted [°C] -20...+80 [kg] 0.3
NG10
0.45
[bar] Port P 350, Port T depressurized [bar] 64, 160, 350 [l/min] 40 (NG06), 80 (NG10) Hydraulic oil according to DIN 51524...525 [°C] Recommended +30...+50, permitted -20...+70 [cSt] / [mm²/s] 20...380 [cSt] / [mm²/s] 30...50 ISO 4406 (1999); 18/16/13
Ordering code
EVSA Pressure relief valve
Code 064 160 350
1
A Pressure stages
Adjustment Nominal screw size / thread with hex. type socket
Pressure stages up to 64 bar up to 160 bar up to 350 bar
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