Page 1020 - Softbound_Edition_19_en

Proportional pressure reducing valve

Proportional pressure reducing cartridge
◆ direct operated M16 x 1,5
◆ Q = 6 l/min Wandfluh standard
max
◆ p = 210 bar (350 bar) x II 2 G Ex db IIC T6, T4
max
◆ p = 100 bar
N red max
x II 2 D Ex tb III C T80 °C, T130 °C
x I M2 Ex db I Mb
Class I Division 1
Class I Zone 1

DESCRIPTION APPLICATION
Direct operated proportional pressure reducing valve in screw-in These valves are suitable for applications in explosion-hazard
cartridge construction for cavity according to Wandfluh standard. areas, open cast and also in mines. The electrical remote control in
Proportionally to the solenoid current, the solenoid force and the conjunction with process controls allows economical solutions
pressure in port A (1) rise. The valve functions practically inde- with repeatable processes. For machining the cartridge cavity in
pendently of the pressure in port P (2). Pressure increase in the steel and aluminum blocks, cavity tools are available (hire or
consumer port A (1) to above the adjusted value, e.g. through an purchase). Please refer to the data sheets in register 2.13.

active consumer, is avoided by discharging excess oil to the tank T
(3). With the solenoid deenergised, the oil flows freely from consu-
mer port A (1) to port T (3). For the control, Wandfluh proportional
amplifiers are available (see register 1.13). The pressure tight
encapsulated Ex-protection solenoid coil prevents an explosion on
the inside penetrating to the outside as well as an ignitable surface
temperature.

SYMBOL CERTIFICATES
Surface Mining Standard M248
(A) 1 -25 °C Electronic
to…
ATEX x x x x
IECEx x x x x
(P) 2 (T) 3
CCC x x x x
EAC x x x x
Australia x x x
MA x x x
UL / CSA x x
The certificates can be found on www.wandfluh.com

GENERAL SPECIFICATIONS ACTUATION
Designation Proportional pressure reducing valve Actuation Proportional solenoid, wet pin push
Construction Direct operated type, pressure tight
Mounting Screw-in cartridge construction Execution MKY45 / 18x60 (data sheet 1.1-183)
Nominal size M16 x 1,5 according to Wandfluh MKU45 / 18x60 (data sheet 1.1-184)
standard Connection Cable gland for cable Ø 6,5…14 mm
Actuation Proportional solenoid Attention! The UL execution is always supplied without cable
Ambient temperature Operation as T4 gland
-25…+70 °C (L15 / L17)
Weight 2,2 kg
MTTFd 150 years

www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 21 21 2.3-608 E