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Parker EVSA

The document describes a direct operated pressure relief valve series called EVSA. It is a seated type valve for screw-in mounting available in two sizes and three pressure stages up to 64, 160, and 315 bar. It features screw adjustment and an optional key lock to set the pressure level and prevent fluctuations. Technical data includes dimensions, flow rates, temperature and pressure specifications.

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253 views4 pages

Parker EVSA

The document describes a direct operated pressure relief valve series called EVSA. It is a seated type valve for screw-in mounting available in two sizes and three pressure stages up to 64, 160, and 315 bar. It features screw adjustment and an optional key lock to set the pressure level and prevent fluctuations. Technical data includes dimensions, flow rates, temperature and pressure specifications.

Uploaded by

dulegenda
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Catalogue HY11-3500/UK

Characteristics / Ordering Code


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 (key lock). Features Seated type valve Screw-in mounting 3 pressure stages 2 adjustment modes - screw with hexagon socket - key lock Technical data
General Design Nominal size Interface Mounting position Ambient temperature MTTFD value Weight Hydraulics Max. operating pressure Pressure stages Nominal flow Fluid Fluid temperature Viscosity permitted recommended Filtration

Direct Operated Pressure Relief Valve Series EVSA

Note The spring must be unloaded when the EVSA is screwed out of the manifold.

Direct operated relief valve, seated type NG06 Screw-in mounting unrestricted [C] -20...+80 [years] 150 [kg] 0.3 [bar] Port P 315, Port T depressurized [bar] 64, 160, 315 [l/min] 40 (NG06), 80 (NG10) Hydraulic oil according to DIN 51524...525 [C] Recommended +30...+50, permitted -20...+70 [cSt] / [mm/s] 20...380 [cSt] / [mm/s] 30...50 ISO 4406 (1999); 18/16/13 (acc. NAS 1638:7)

NG10

0.45

Ordering code

EVSA
Pressure relief valve Pressure stages

A
Adjustment Nominal screw size / thread with hex. type socket

1
FPM Seals Design series
(not required for ordering)

Lock

Code 064 160 315

Pressure stages up to 64 bar up to 160 bar up to 315 bar

Code omit Z Code 06 10

Lock Normal Key lock Nominal size NG06, M28x1.5 NG10, M35x1.5

EVSA UK.INDD RH 06.09.2011

4-19

Parker Hannifin Corporation Hydraulics Group

Catalogue HY11-3500/UK

Characteristic Curves
p/Q performance curves NG06 Pressure stage 64 bar

Direct Operated Pressure Relief Valve Series EVSA

NG10 Pressure stage 64 bar

4
Pressure stage 160 bar Pressure stage 160 bar

Pressure stage 315 bar

Pressure stage 315 bar

All characteristic curves measured with HLP46 at 50C.


EVSA UK.INDD RH 06.09.2011

4-20

Parker Hannifin Corporation Hydraulics Group

Dimensions
EVSA NG06

Catalogue HY11-3500/UK

Direct Operated Pressure Relief Valve Series EVSA

SK-EVSAA0613

EVSA NG10

SK-EVSAA1013

Installation dimensions

Size NG06 NG10

M M28 x 1.5 M35 x 1.5

D1 24.8 31.8

D2 15 18.5

D3 6.8 10

D4 25 32
H9 H9

D5 6.8 10

L1 15 18

L2 19 23

L3 30 35

L4 35 41 - 46

L5 45 52

L6 65 80

EVSA UK.INDD RH 06.09.2011

4-21

Parker Hannifin Corporation Hydraulics Group

Catalogue HY11-3500/UK

Notes

EVSA UK.INDD RH 06.09.2011

4-22

Parker Hannifin Corporation Hydraulics Group

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