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Proportional pressure relief valve
Proportional pressure relief valve Proportional pressure reducing valve

ACCESSORIES SURFACE TREATMENT Proportional pressure reducing cartridge
Proportional amplifier Register 1.13 ◆ The cartridge body, the slip-on coil and the armature tube are ◆ direct operated M16 x 1,5
zinc-nickel coated ◆ Q = 6 l/min Wandfluh standard
Electric plug B (black) Article no. 219.2002 max
◆ p = 210 bar (350 bar)
max
Threaded body Data sheet 2.9-200 ◆ p = 40 bar x II 2 G Ex db IIC T6, T4
Technical explanations Data sheet 1.0-100 N red max x II 2 D Ex tb III C T80 °C, T130 °C
Filtration Data sheet 1.0-50 x I M2 Ex db I Mb
Class I Division 1
Class I Zone 1

APPLICATION
DESCRIPTION
Direct operated proportional pressure reducing valve in screw-in These valves are suitable for applications in explosion-hazard
SEALING MATERIAL MANUAL OVERRIDE cartridge construction for cavity according to Wandfluh standard. areas, open cast and also in mines. The electrical remote control in
NBR or FKM (Viton) as standard, choice in the type code None 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 indepen- with repeatable processes. For machining the cartridge cavity in
dently of the pressure in port P (2). Pressure increase in the con- steel and aluminum blocks, cavity tools are available (hire or

sumer port A (1) to above the adjusted value, e.g. through an active purchase). Please refer to the data sheets in register 2.13.
consumer, is avoided by discharging excess oil to the tank T (3).
With the solenoid deenergised, the oil flows freely from consumer
port A (1) to port T (3). For the control, Wandfluh proportional ampli-
fiers are available (see register 1.13). The pressure tight encap-
sulated 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)
-25…+50 °C (L21)
Weight 2,2 kg
MTTFd 150 years

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 4/4 Edition: 22 02 2.3-591 E www.wandfluh.com Illustrations are not binding Data subject to change 1/4 Edition: 21 21 2.3-602 E
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