3/2 way seat valve DN3 PN480 ATEX

Features

Directly actuated directional seat valve controlling pressurised media.
The valve seat seals hermetically preventing internal leaks.
All parts are made of corrosion-resistant materials, and they are easily replaceable.
Valve design in a structural plate form
On request, the valve can be equipped with other actuations than the electromagnet, e.g. hydraulic or pneumatic cylinder actuation, manual pushbutton operation
In addition, the individual actuations can be supplemented with a maintained-contact function

Function of 3/2-way valve

The force (1), generated by the actuation, acts through the lever (2), the tappet (3) on the ball(s) (4) and presses it out of the right valve seat (5) and into the left valve seat (5). This is used to connect lines P and A and shut o line T, see Example. The ring (6) supports the fl ange seal from the inside. The volume fl ow is limited by the entire fl ow resistance.

The 3/2-way valve is provided with a „negative overlap“. During the changeover process, connections P, A and T are briefl y connected with each other. The changeover occurs so fast that the hydraulic effects are negligible. By design, a 3/2-way valve always requires the connection of a T-connector; only then a proper switching function can be ensured.

Depending on the design of the valve insert a valve with the basic position „AT NO“ (lines A and T are connected) or „PA NO“ (lines P and A are connected) is provided.

Technical data

measured with HFA medium 97/3%, at 20°C

General
Weight	3,9kg
Installation position	any
Ambient temperature	-10 to 50°C (Hydraulikmedien Vorgaben beachten)
Material Valve parts Material Seals	Stainless steel, bronze except electromagnet NBR, PTFE
Hydraulic
max. operating pressure of connector P	480bar
max. operating pressure of connector A	480bar
max. operating pressure of connector T	50bar
max./min. control pressure of connector Z	siehe Bestellangaben
max. volume flow P->A	10 l/min
max. volume flow A->T	10 l/min
specified direction of flow	P->A, A->T
Pressure fluid - Medium - Temperature range - Medium - Quality - Cleanliness class, filter fineness - Viscosity	water, HFA 5 bis 50°C see Hauhinco requirements on water and HFA media class 20/18/15, filter fineness 25µm 0,6 bis 100 mm²/s
Pressure fluid - Medium - Temperature range - Medium - Quality - Cleanliness class, filter fineness - Viscosity	mineral oil, HLP -10 bis 50°C acc. to DIN 51524 Class 20/18/15, filter fineness 25µm 0,6 bis 100 mm²/s
Use of other pressure fluids on request.
The covers (6) are designed with a viscosity of approx. 1.0 mm²/s; if a medium with a substantially different viscosity is used, the covers must be selected such that the maximum admissible volume flow is not exceeded.
Elektric
Voltage	12 VDC, max. 15 VDC
Current	0,2 A
Power consumption	2,24 W
Operating time	100% ED
Degree of protection acc. to EN60529	Body IP54, electrical connection IP65
Protection against ignition according to EN 50020	I 2G EEX ia II T6; I M2 EEx ia
max. switching rate	1 Hz
Included in the scope of supply
Mounting screws of the valve	Cheese-head screw M6
Cable socket of the valve solenoid	Hirschmann cable socket G - series

Versions

Description	Nominal size	Weight	Max. pressure	Basic position	Voltage	Note	Article number
3/2-way valve DN3 PN480	DN3	3,9kg	480bar	A->T NO	12VDC	solenoid actuation	6269591
3/2-way valve DN3 PN480	DN3	3,9kg	480bar	P->A NO	12VDC	solenoid actuation	6269605