Proportional pressure relief valves Type PDV7000 pages

Type PDV700
Proportional pressure relief valves
NG 6 up to 700 bar
Features
•tDirect operated for low flow,
t pilot operated for high flow
•tEquipped with force controlled t
t proportional solenoid
•tLarge pressure range
•thigh degree of pressure stability
•tlinear p-I curve
up to 15 l/min
Application
As modular valve, for electrical control of system or working pressure.
– for remote pressure setting
–t maintaining pressure within small limits
–t generating repeatable pressure time curves, as ramps, pressure steps, sine curves
–t for controlled decompression of large oil volumes, for example in presses and
taccumulators
Hydraulic fluidt
mineral oil according to DIN 51524
(other fluids on request)
Fluid temperature ranget
NBR: -30 to 80 °Ct
FPM: -20 to 80 °C
Ambient temperature ranget
-30 to 50 °C
Viscosity range t
5 to 400 mm2/s
Portingt
NG 6 according to DIN 24340 / ISO 4401 /  
Technical data
CETOP RP 121 H
Operating pressure max. connection P, A, Bt 700 bar
Pressure admissible max. connection Tt
< 2 bar (refer information page 2)
Flow rate max.t
15 l/min - pilot operated version
Filtrationt
according to NAS 1638, class 6
or ISO/DIN 4406 17/15/12
Weightt
see dimensional drawings
Material / surface treatmentt
galvanized
Hystereset
≤ 5 % with optimal dither signal
Bieri Hydraulik AG | Könizstrasse 274 | CH-3097 Liebefeld | Tel. +41 31 970 09 09 | Fax +41 31 970 09 10 | www.bierihydraulics.com