Page 834 - Softbound_Edition_19_en

Pressure relief valve
Pressure relief valve Pressure relief valve

GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS DIMENSIONS
Designation Pressure relief valve Working pressure p = 400 bar Key adjustment «S» Control knob adjustment «D»
max
Construction Direct operated Tank pressure p = p (1) + 20 bar (valve closed)
T max
Mounting Screw-in cartridge construction Nominal pressure p = 63; 210; 315; 350 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 = 0,1…25 l/min
Weight 0,19 kg key adjustment Leakage oil Poppet type, max. 4 drops / min at p max 45
0,20 kg control knob adjustment Fluid Mineral oil, other fluid on request
0,25 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 50
efficiency
Filtration Required filtration grade ß 6…10 ≥ 75,
PERFORMANCE SPECIFICATIONS see data sheet 1.0-50 60
2
Oil viscosity u = 30 mm /s 70
p = f (Q) Pressure volume flow characteristics p = f (Q) Pressure volume flow characteristics HYDRAULIC CONNECTION
Maximal adjustable pressure Minimal adjustable pressure Cavity drawing according to ISO 7789–22–02–0–98
Cover «A»
p [bar] p [bar] M22x1.5
400 K0086 P N = 350 bar 30 K0374
P N = 315 bar 25
300
P N = 210 bar 20
200 15 25 (2)
10
100
P N = 63 bar 5
0 0 (1)
0 5 10 15 20 25 Q [l/min] 0 5 10 15 20 25 Q [l/min]
(1)

p = f (n) Pressure adjustment characteristics Note! For detailed cavity drawing and cavity tools see data
sheet 2.13-1003
Measured at Q = 5 l/min
p [bar]
400 K0674
P N = 350 bar
300 P N = 315 bar ACCESSORIES PARTS LIST
200 P N = 210 bar Pressure relief valve Position Article Description

100 Flange body / sandwich plate NG4-Mini Data sheet 2.1-620 20 114.2224 Control knob
P N = 63 bar Flange body / sandwich plate NG6 Data sheet 2.1-640 25 032.0611 Cover rd 23 / 3 x 35
0
0 1 2 3 4 5 n [-] Flange body / sandwich plate NG10 Data sheet 2.1-660 30 193.1061 Retainer rd 6 DIN 6799
Back pressure valve 40 153.1402 Hexagon nut 0,5d M8 x 1
Sandwich plate NG4-Mini Data sheet 2.1-720 45 212.1486 Washer (only for p = 210 bar)
N
Sandwich plate NG6 Data sheet 2.1-740 50 160.2188 O-ring ID 18,77 x 1,78 (NBR)
SEALING MATERIAL SURFACE TREATMENT Sandwich plate NG10 Data sheet 2.1-760 160.6188 O-ring ID 18,77 x 1,78 (FKM)
NBR or FKM (Viton) as standard, choice in the type code ◆ The cartridge body is zinc-nickel coated 60 160.2140 O-ring ID 14,00 x 1,78 (NBR)
◆ The control knob is made of plastic 160.6141 O-ring ID 14,00 x 1,78 (FKM)
Types of adjustment for screw-in Data sheet 2.0-50
cartridges 70 049.3177 Back-up ring rd 14,6 x 17,5 x 1,4

STANDARDS INSTALLATION NOTES Threaded body Data sheet 2.9-200
Technical explanations Data sheet 1.0-100
Cartridge cavity ISO 7789 Mounting type Screw-in cartridge M22 x 1,5
Contamination ISO 4406 Mounting position Any Hydraulic fluids Data sheet 1.0-50
efficiency Tightening torque M = 60 Nm Screw-in cartridge Filtration Data sheet 1.0-50
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: 20 48 2.1-540 E www.wandfluh.com Illustrations are not binding Data subject to change 3/3 Edition: 20 48 2.1-540 E
Page 834