• Direct operated valves
• Poppet type valves in sandwich mounting execution• Porting NG 6 according to DIN 24340
• Max. pressure limitation in reduced pressure side
Application
Used in hydraulic systems, where beside the nominal pressure a reduced pressure for a second user is needed.
Technical dataHydraulic fluid
Fluid temperature range
Ambient temperature range Viscosity range Porting
Pressure admissible max. connection T Reduced pressure range Hysteresis
Max. pressure limitation in reducedpressure side Flow rate max. Filtration Weight
Material / surface treatment
mineral oil according to DIN 51524(other fluids on request)NBR: -30 to 80 °CFPM: -20 to 80 °C-30 to 50 °C
5 to 400 mm2/s (optimal: 10–68)
NG 6 according to DIN 24340 / ISO 4401 / CETOP RP 121 H350 bar70 bar–600 bar
up to 20% of reduced pressure15% over reduced pressure25 l/min
according to NAS 1638, class 6 or ISO/DIN 4406 15/122,3 kg
housing: steel, galvanized, black chromatedcartridge: steel corrosion resistantadjusting knob: plastic
Operating pressure max. connection P, A, B 700 bar
Bieri Hydraulik AG | Könizstrasse 274 | CH-3097 Liebefeld | Tel. +41 31 970 09 09 | Fax +41 31 970 09 10 | www.bierihydraulics.com
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Pressure reducing valves in A(Type DM700-6-A…)Design revision ASymbol
Dimension drawing
Article no. Pressure range
P [NBR] V [FPM]
70 – 130 bar 60247 56645120 – 350 bar 58878 58879250 – 600 bar