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Pressure relief valve
Pressure relief valve Pressure relief valve

GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS DIMENSIONS
Designation Pressure relief valve Working pressure p = 450 bar Key adjustment «S» Control knob adjustment «D»
max
Construction Pilot operated, seat tight Tank pressure p = 450 bar
T max
Mounting Screw-in cartridge construction Nominal pressure p = 63; 160; 350; 420 bar
N
Nominal size M22 x 1,5 according to ISO 7789 range 30
Actuation Manually Minimum pressure See characteristics 40 20
Ambient temperature -25…+90 °C Volume flow range Q = 0,2…100 l/min
Weight 0,15 kg key adjustment Leakage oil Seat tight, max. 0,15 ml / min (approx. 3
0,16 kg control knob adjustment drops / min) at 30 cSt
0,21 kg cover Fluid Mineral oil, other fluid on request
MTTFd 150 years Viscosity range 12 mm /s…320 mm /s
2
2
Temperature range -25…+90 °C (NBR) 50
fluid -20…+90 °C (FKM)
Contamination Class 18 / 16 / 13
efficiency 60
Filtration Required filtration grade ß 6…10 ≥ 75,
see data sheet 1.0-50 70
PERFORMANCE SPECIFICATIONS Cover «A»
Oil viscosity u = 30 mm /s HYDRAULIC CONNECTION
2
Cavity drawing according to ISO 7789–22–02–0–98
p = f (Q) Pressure volume flow characteristics p = f (Q) Pressure volume flow characteristics
Maximal adjustable pressure Minimal adjustable pressure
M22x1.5
p [bar] p [bar]
500 K1007 40 K1009 25
P N = 420 bar P N = 160/350/
400 P N = 350 bar 30 420 bar (2)
300 P N = 63 bar
20
200 P N = 160 bar (1)
100 P N = 63 bar 10
0 0
0 25 50 75 100 Q [l/min] 0 25 50 75 100 Q [l/min] (1)

Note! For detailed cavity drawing and cavity tools see data
p = f (n) Pressure adjustment characteristics sheet 2.13-1003
Measured at Q = 5 l/min
p [bar]
500 K1008 ACCESSORIES PARTS LIST
400 P N = 420 bar Types of adjustment for screw-in Data sheet 2.0-50 Position Article Description
P N = 350 bar
300 cartridges 20 114.2224 Control knob
200 Flange body / sandwich plate Data sheet 2.1-620 25 032.0611 Cover rd 23 / 3 x 35
P N = 160 bar
100 NG4-Mini
P N = 63 bar 30 193.1061 Retainer rd 6 DIN 6799
0 Flange body / sandwich plate NG6 Data sheet 2.1-640 40 153.1402 Hexagon nut 0,5d M8 x 1
0 1 2 3 4 n [-]
Flange body / sandwich plate NG10 Data sheet 2.1-660
Threaded body Data sheet 2.9-200 50 160.2188 O-ring ID 18,77 x 1,78 (NBR)
160.6188
O-ring ID 18,77 x 1,78 (FKM)
Technical explanations Data sheet 1.0-100 60 160.2140 O-ring ID 14,00 x 1,78 (NBR)
SEALING MATERIAL SURFACE TREATMENT Hydraulic fluids Data sheet 1.0-50 160.6141 O-ring ID 14,00 x 1,78 (FKM)
NBR or FKM (Viton) as standard, choice in the type code ◆ The cartridge body is zinc-nickel coated Filtration Data sheet 1.0-50 70 049.3177 Back-up ring rd 14,6 x 17,5 x 1,4
◆ The control knob is made of plastic

STANDARDS INSTALLATION NOTES

Cartridge cavity ISO 7789 Mounting type Screw-in cartridge M22 x 1,5
Contamination ISO 4406 Mounting position Any, preferably horizontal
efficiency Tightening torque M = 60 Nm Screw-in cartridge
D Wandfluh AG Postfach CH-3714 Frutigen
Tel. +41 33 672 72 72 Fax +41 33 672 72 12 sales@wandfluh.com

www.wandfluh.com Illustrations are not binding Data subject to change 2/3 Edition: 18 41 2.1-538 E www.wandfluh.com Illustrations are not binding Data subject to change 3/3 Edition: 18 41 2.1-538 E
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