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BV.PM18
Pressure relief valve BV.PM18

GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS DIMENSIONS
Designation Pressure relief valve Working pressure p = 400 bar Key adjustment «S» Control knob adjustment «D»
max
Construction Pilot operated Tank pressure p p + 80 bar
T max P
Mounting Screw-in cartridge construction Nominal pressure p = 63 bar, 160 bar, 350 bar
N
Nominal size M18 x 1,5 according to ISO 7789 range 30
Actuation Manually Minimum pressure See characteristics
Ambient temperature -25…+90 °C Volume flow range Q = 0,1…25 l/min 40 20
Weight 0,10 kg key adjustment Leakage oil See characteristics
0,12 kg control knob adjustment Fluid Mineral oil, other fluid on request
0,16 kg cover Viscosity range 12 mm /s…320 mm /s
2
2
MTTFd 150 years Temperature range -25…+90 °C (NBR)
fluid -20…+90 °C (FKM)
Contamination Class 18 / 16 / 13
efficiency 50
Filtration Required filtration grade ß 6…10 ≥ 75, Cover «A»
see data sheet 1.0-50
60
PERFORMANCE SPECIFICATIONS
Oil viscosity u = 30 mm /s 70
2
25
p = f (Q) Pressure volume flow characteristics p = f (Q) Pressure volume flow characteristics
Maximal adjustable pressure Minimal adjustable pressure
PARTS LIST
p [bar] p [bar]
400 K0666 10 K0667 Position Article Description
P N = 350 bar
30 300 7,5 20 114.2224 Control knob
25 032.0611 Cover rd 23 / 3 x 35
200 5
P N = 160 bar
30 193.1061 Retainer rd 6 DIN 6799
100 P N = 63 bar 2,5
40 153.1402 Hexagon nut 0,5d M8 x 1
0 0 50 160.2156 O-ring ID 15,60 x 1,78 (NBR)
0 5 10 15 20 25 Q [l/min] 0 5 10 15 20 25 Q [l/min]
160.6156 O-ring ID 15,60 x 1,78 (FKM)

60 160.2093 O-ring ID 9,25 x 1,78 (NBR)
p = f (n) Pressure adjustment characteristics Q = f (p) Leakage volume flow characteristics 160.6092 O-ring ID 9,25 x 1,78 (FKM)
L
Measured at Q = 5 l/min P (1) → T (2) 70 049.3137 Backup ring rd 10,6 x 13,5 x 1,4
3
p [bar] Q [cm /min]
400 K0113 300 K0304
P N = 350 bar ACCESSORIES HYDRAULIC CONNECTION
300 250 Cavity drawing according to ISO 7789–18–02–0–98
200 Types of adjustment for screw-in Data sheet 2.0-50
200 150 cartridges
P N = 160 bar M18x1.5
100 P N = 63 bar 100 Flange body / sandwich plate Data sheet 2.1-600
50
NG3-Mini
0 0
0 1 2 3 4 5 n [-] 0 50 100 150 200 250 300 350 p [bar] Sandwich plate NG3-Mini Data sheet 2.1-700 (2)
(back pressure valve)

Threaded body Data sheet 2.9-200
SEALING MATERIAL SURFACE TREATMENT Technical explanations Data sheet 1.0-100 (1)
NBR or FKM (Viton) as standard, choice in the type code ◆ The cartridge body is zinc-nickel coated Hydraulic fluids Data sheet 1.0-50 (1)
◆ The control knob is made of plastic Filtration Data sheet 1.0-50
Note! For detailed cavity drawing and cavity tools see data
STANDARDS INSTALLATION NOTES sheet 2.13-1001
Cartridge cavity ISO 7789 Mounting type Screw-in cartridge M18 x 1,5
Contamination ISO 4406 Mounting position Any, preferably horizontal
efficiency Tightening torque M = 40 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: 16 42 2.1-510 E www.wandfluh.com Illustrations are not binding Data subject to change 3/3 Edition: 16 42 2.1-510 E
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