Non Return Valves

Non Return Valve pilot Opt subplate Type (internal drain)

Model Code: NRP-I

Technical Data
Mounting style
Threaded port or subplate
Mounting position
optional
Cracking Pressure bar
0,1,2,3 & 5
Maxmium Operating Pressure bar
315 Bar
Flow Direction
From A to B free,from B to A through pilot
Control Areas Size
Main Poppet
Pilot piston
Decompression Poppet
10             20             30
3.1 cm2     8.0 cm2     12.5 cm2
0.7 cm2     3.8 cm2      6.1 cm2
0.2 cm2     0.5 cm2      0.7 cm2
Maxmium flow Size
L/min.
10   20     30
80   160   350
Pressure fluid  
Mineral oil (HL,HLP) to DIN 51524;
Fast bio-degradable pressure fluids to
VDMA 24 568;HTEG (rape seed oil);
HEPG (polyglycol);HEES (synthetic ester);
other fluids on request
Pressure fluid -temperature range oC
-30 to +80
Viscosity range mm2/s
2.8 to 500
Degree of contamination  
Maxmium premissible degree of contamination of the fluid is to NAS 1638 class 9.
Weight Size
Subplate     Kg.
Threaded body     Kg.
10    20    30
2.5   4.1   8.5
2.4   4.0   8.4