The Burkert Type 0131 (65255) is a media-separated, direct-acting toggle valve, 3/2-way, normally open (NO). Body and port: brass body, internal thread G3/8, orifice DN 10; sealing is made of NBR. The diaphragm between actuator and valve body also allows aggressive media to be switched.
Circuit function and pressure range of version 65255
In the rest position, pressure port 1 (P) is connected to working port 2 (B) and port 3 (R) is closed. The valve is direct-acting and switches from 0 bar, i.e. without minimum pressure; the pressure range of this version extends to 1 bar, the Kv value for water is 2 m³/h. According to the data sheet, it opens in 10 to 20 ms and closes in 40 to 60 ms. The manual override with locking function simplifies commissioning and maintenance.
Actuator and connector of version 65255
The coil for 24 V UC (AC/DC) is moulded in chemically highly resistant epoxy and block-screwed, which makes it vibration-proof. The integrated kick-and-drop electronics reduce the power after pull-in (100 W) to 9 W during operation. It is connected via plug contacts to DIN EN 175301-803 form A; with a cable plug, the valve achieves IP65. The cable plug Type 2518 is included.
Technical data at a glance
Circuit function D, 3/2-way, normally open (NO) · Orifice DN 10 · Port connection internal thread G3/8 · Pressure range 0–1 bar · Kv value water 2 m³/h · Body brass · Seal NBR · Medium temperature -10 °C to +90 °C · Ambient temperature -10 °C to +50 °C · Voltage 24 V UC (AC/DC) ±10 % · Plug form A · IP65 with cable plug · Weight 1.735 kg
Media and installation
It switches aggressive and non-aggressive liquids, neutral gases and aggressive gases according to their diffusion properties, up to a viscosity of 37 mm²/s. It can be installed in any position, preferably with the actuator facing up. As a dealer listed by Burkert, we source the valve directly from the manufacturer.
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