Screw-in cartridges and line mount bodies - Wandfluh - #19

ISO 7789

Direct operated 2/2 and 3/2-way solenoid poppet valve in screw-in cartridge design with thread

M22 x1,5 for cavity acc. to ISO 7789.

EEx: in accordance with European standards

EN 50014, EN 50019, EN 50028

e: increased safety

m: encapsulation

Group II:

for all applications except mining Zone 1 / 21 (and 2 / 22): explosive mixtures present intermittently EC-type examination certificate: PTB 01 ATEX 2129 X

The pressure tight switching solenoid and in turn the spring on the opposite side shift the guided poppet into an either open or closed position. Due to the equal-area- and balanced-poppet-design there are no undesired opening or closing forces. Fluid may pass the poppet valve in both direc-tions. The poppet piston is sealed by an o-ring. The seat with metallic seal closes leak free in both directions.

Wandfluh solenoid operated poppet valves are applied where an absolutly leak free closing of the valve is essential like in load holding-, clam­ping- or gripping functions. These valves are suitable for hazardeous areas in off-shore and shipbuilding applications as well as in the che­mical-, oil- and gas industry. The screw-in cart­ridges are mainly used in mobile or station-ary integrated blocks and in size NG4-Mini and NG6 flange and sandwich bodies. To machine the cavities in steel or aluminium blocks, ca­vity tools may be supplied (hire or purchase). Please refer to the data sheets in register 2.13.

/ T4 # □

GENERAL SPECIFICATIONS......................1

HYDRAULIC SPECIFICATIONS..................1

SYMBOLS....................................................2

ELECTRICAL CONTROL............................. 2

START-UP.................................................... 2

CHARACTERISTICS.................................2/3

DIMENSIONS/SECTIONAL DRAWING ....3/4

PARTS LIST................................................. 4

ACCESSORIES............................................ 4

S D X PM22

Execution T1...T4

Design-Index (Subject to change)

Description

Construction

Operation

Mounting

Admissible ambient temperature * Mounting position Fastening torque

Weight

Volume flow

Direct operated 2/2-way and 3/2-way solenoid poppet valve

Screw-in cartridge for cavity acc. to ISO 7789 Solenoid

Screw-in thread M22x1,5 -20...+40 °C

any, preferably horizontal

MD = 50 Nm for cartridge

MD max = 5 Nm for coil retaining nut

m = 1,22 kg 2/2-way

m = 1,24 kg 3/2-way

any (note performance limits)

Fluid

Contamination efficiency

Viscosity range Admissible fluid temperature * Working pressure Nominal volume flow Max. volume flow Pressure drop

Mineral oil, other fluid on request ISO 4406:1999, class 18/16/13 (Required filtration grade & 6...10 > 75) (see data sheet 1.0-50/2) 12 mm²/s...320 mm²/s -20...+40°C

p_max = 350 bar

Q_N = 20 l/min

Q_max = up to 40 l/min

Ap_max = <7 bar with 20 l/min

* Deviating pressure medium - or ambient temperatures are possible for special arrangements after checking and authorisation by a responsible inspector. Measures for the prevention of the exceeding of the admissible solenoid surface - and internal temperatures can be: a good ventilation, low ambient temperatures (for higher pressure medium temperatures), limitation of the maximum possible power supply voltage, a short switching-on duration, installation on large heat dissipating blocks, etc. The responsibility in all cases lies with the operator, resp. with his inspector.