Page 839 - Softbound_Edition_19_en

Pressure relief valve
Pressure relief valves Pressure relief valves

chaRacteRistics Oil viscosity υ = 30 mm /s
2
p = f (Q) Pressure volume flow characteristics p = f (Q) Pressure volume flow characteristics Pressure relief valve
(Maximal adjustable pressure) (Minimal adjustable pressure) screw-in cartridge M22x1,5
p [bar] p [bar] • Direct operated
70 K0106 20 K0104 • Q = 25 l/min Wandfluh standard
60 • p max = 400 bar
50 15 • p max = 350 bar
40 10 n max
30 DescRiPtion Function aPPlication
20 5 Direct operated pressure relief valve as a BX: If pressure in pilot line x reaches the set BX:
10 screw-in cartridge with a thread M22x1,5 and pressure poppet spool will be pushed against Used to pilot e.g.a logic elements wich must
0 0 0 20 40 60 80 100 Q [l/min] cavity according to Wandfluh-Norm. The valve the spring. Oil passage form P to T line will be relief independent of system pressure.
0 20 40 60 80 100 Q [l/min] is available in 2 different setting versions: Key opened-up irrespective of pressure in P line, BY:
setting „S“ and turning knob setting „D“. Key this due to a drain connection separating x Used to pilot e.g.a logic element with loading/
p = f (n) Pressure adjustment characteristics Q = f (p) Leakage volume flow characteristics adjustment „S“ is also available with cover and P line. Poppet spool and pilot piston are unloading and relief function in an accumulator
L
(at Q = 5 l/min) [P (1) → T (2)] see data sheet 2.0-50.2 standard pressure physically linked. or dual pump system.
p [bar] Q [cm /min] levels are available: 100 bar and 315 bar. The BY: If pressure in pilot line x reaches the set
3
40 K0103 20 K0105 cartridge body made of steel is galvanized and pressure poppet spool will be pushed against For machining the cavity in steel or aluminium
therefore rust-protected. the spring. Oil passage from P to T line will be tools are available for rent or sale. See also
30 15 opened-up. Poppet spool and pilot piston are data sheet in register 2.13
P(1) separate items. Due to the area ratio of the
20 10 pilot the required pilot pressure in x line is lower
than pressure in P line by the percentage of the
10 5 differential pressure.
0 0
T(2) 0 1 2 3 4 5 6 7 n [-] 0 5 10 15 20 25 30 35 p [bar] tYPe coDe
B PM22 - #
Pressure relief valve
DiMensions
Screw adjustment «S» Knob adjustment «D» Relief valve remote controlled X
Relief and unloading valve Y
Type of adjustment Key S
Cavity drawing to
Ø 26 ISO 7789–22–02–0–98 Control knob D
Ø 17 Cover A (see data sheet 2.0-50)
20
s4 M22x1,5
30 Screw cartridge M22x1,5
40 Nominal pressure range p 100 bar 100
s13 N 315 bar 315
57 (2) 350 bar 350
49,5
s27 Design-Index (Subject to change)
ø30 95,4 (1)
50 GeneRal chaRacteRistics hYDRaulic chaRacteRistics
M22x1,5 Description BX: Direct operated relief valve, Hydraulic fluid Mineral oils, other fluids on request
(1) remote controlled Max permissible ISO 4406:1999, class 18/16/13
38,4 Detailed cavity drawing and cavity BY: Direct operated relief valve, contamination level (recommended filter gauge ß 10…25≥75)

with additional unloading function
see data sheet 1.0-50/2
60 tools see data sheet 2.13-1003. Construction Screw-in cartridge for cavity acc. to Viscosity range 12 mm /s…320 mm /s
2
2
Wandfluh-standard Hydraulic fluid temp. -20…+70°C
70 Mounting M22x1.5 screw thread Peak pressure p max = 400 bar
Ambient temperature -20…+50°C p Tmax = p +20 bar
P
Installation position any Nominal pressure p = 100 bar, p = 315 bar, p = 350 bar
N
N
N
Tightening torque M = 50 Nm Min. pressure see characteristic
D
PaRts list accessoRies Weight: m = 0,20 kg (key) Differential pressure 11% for p = 100 bar
N
Pressure relief valve: m = 0,21 kg (control knob) (only for BY.PM22) 7,5% for p = 315 bar and p = 350 bar
N
Position Article Discription Flange-/sandwich plate NG4-Mini Data sheet 2.1-620 Volume flow Q = 0,1…25 l/min N
Flange-/sandwich plate NG6 Data sheet 2.1-640 Leak volume flow see characteristic (BX.PM22)
20 114.2224 Knob Flange-/sandwich plate NG10 Data sheet 2.1-660 tight seating (BY.PM22)
30 193.1061 Safety plate RD6 DIN 6799 Back pressure valve: sYMBols Mechanical actuation
40 153.1402 Hexagonal nut 0,5D M8 x 1 Sandwich plate NG4-Mini Data sheet 2.1-720 BX.PM22 BY.PM22 2 types of adjustments:
50 160.2188 O-ring ID 18,77 x 1,78 Sandwich plate NG6 Data sheet 2.1-740 S = Screw adjustment
Data sheet 2.1-760
Sandwich plate NG10
60 160.2140 O-ring ID 14,00 x 1,78 P(2) P(2) with fork wrench and Allen key
70 049.3177 Back-up ring RD 14,6 x 17,5 x 1,4 Line mount body Data sheet 2.9-200 D = Control knob adjustment, fixed
Actuation stroke S
= 5 mm
x(1) x(1) Actuation angle α b = 1800° (5 revolutions)
Technical explanation see data sheet 1.0-100 b
T(3) T(3)
Wandfluh AG Tel. +41 33 672 72 72 E-mail: sales@wandfluh.com Illustrations not obligatory Data sheet no. Wandfluh AG Tel. +41 33 672 72 72 E-mail: sales@wandfluh.com Illustrations not obligatory Data sheet no.
Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.1-542E 2/2 Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.1-544E 1/2
CH-3714 Frutigen Edition 11 18 CH-3714 Frutigen 17 ø 26 Edition 14 22
Ø
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s4 30 20
40
s13
47,1 54,6
s27
ø30
50
M22x1,5
53,5 70
60
75
65