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P. 904
Pressure reducing valve
Pressure reducing valve Pressure reducing valve
GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS DIMENSIONS
Designation Pressure reducing valve Working pressure p = 400 bar Key adjustment „S” Control knob adjustment „D”
max
Construction Pilot operated Nominal pressure p N red = 63 bar, 160 bar, 350 bar 17 s4 27
Mounting Screw-in cartridge construction range
Nominal size M22 x 1,5 according to ISO 7789 Volume flow range Q = 0…80 l/min 30
Actuation Manually Leakage oil See characteristics 20
Ambient temperature -25…+90 °C Fluid Mineral oil, other fluid on request 40
2
2
Weight 0,18 kg key adjustment Viscosity range 12 mm /s…320 mm /s s13
0,27 kg control knob adjustment Temperature range -25…+90 °C (NBR) 40.4 47.9
0,22 kg cover fluid -20…+90 °C (FKM) s27
MTTFd 150 years Contamination Class 18 / 16 / 13
efficiency 107.8
Filtration Required filtration grade ß 10…16 ≥ 75, M22x1.5
PERFORMANCE SPECIFICATIONS see data sheet 1.0-50 100.3 50
Oil viscosity u = 30 mm /s Star handle „G”
2
p = f (Q) Pressure volume flow characteristics p = f (Q) Pressure volume flow characteristics (3)
red red
Maximal adjustable pressure Minimal adjustable pressure 59.9 60
p [bar] * Consumer resistance depending on the system 70
400 K0336 p [bar] (2)
P N red = 350 bar 80 K0370
300 80 55.6
60 26
200 (1) 90
P N red = 160 bar 40 P N red = 160/350 bar
100
P N red = 63 bar 20 Cover „A”
0 P N red = 63 bar ∗ 115.8
80 60 40 20 0 20 40 60 80 0 23
A T Q [l/min] P A 80 60 40 20 0 20 40 60 80
A T Q [l/min] P A
ACCESSORIES
p = f (n) Pressure adjustment characteristics Q = f (p) Leakage volume flow characteristic 25 Types of adjustment for screw-in Data sheet 2.0-50
red L
Measured at Q = 0 l/min (static) A (1) → T (3) cartridges
pressure in P (2) = 350 bar 46.8
p [bar] Technical explanations Data sheet 1.0-100
P N red = 350 bar
3
350 K0323 Q [cm /min] Filtration Data sheet 1.0-50
300 1000 K0760
250 800 106.7
200 PARTS LIST
150 P N red = 160 bar 600
100 400 Position Article Description
50 P N red = 63 bar 20 114.2228 Control knob K9
0 200 HYDRAULIC CONNECTION
0 1 2 3 4 5 n [-] 0 Cavity drawing according to ISO 7789–22–04–0–98 25 032.0616 Cover rd 23 / 3 x 35 K9
50
100
0 P N red = 160/350 bar 150 200 250 300 350 p red. [bar] 26 082.2004 Star handle rd 40 x 26
P N red = 63 bar 30 193.1062 Retainer rd 6 DIN 6799
M22x1.5
40 154.7407 Hexagon nut M8 x 1 x 4
50 160.2188 O-ring ID 18,77 x 1,78 (NBR)
SEALING MATERIAL SURFACE TREATMENT (3) 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 and the control knob are made of stainless
steel 60 160.2156 O-ring ID 15,60 x 1,78 (NBR)
(2) 160.6156 O-ring ID 15,60 x 1,78 (FKM)
70 049.8196 Backup ring PTSM rd 14,5 x 17,4 x 1,4
STANDARDS INSTALLATION NOTES (1) 80 160.2140 O-ring ID 14,00 x 1,78 (NBR)
(1) 160.6141 O-ring ID 14,00 x 1,78 (FKM)
Cartridge cavity ISO 7789 Mounting type Screw-in cartridge M22 x 1,5 90 049.8176 Back-up ring PTSM rd 12,7 x 15,6 x 1,4
Contamination ISO 4406 Mounting position Any, preferably horizontal Note! For detailed cavity drawing and cavity tools see data
efficiency Tightening torque M = 60 Nm Screw-in cartridge sheet 2.13-1004
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: 21 51 2.2-530S E www.wandfluh.com Illustrations are not binding Data subject to change 3/3 Edition: 21 51 2.2-530S E
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