Under article number 252122 we supply the servo-assisted Burkert diaphragm valve Type 6213 (2/2-way, normally closed (NC)) with brass body, internal thread G1/2 and NBR seal in orifice DN 10.
How the Burkert valve Type 6213 DN 10 switches
When de-energised, the flow path from port 1 (P) to port 2 (A) is closed; the valve only opens when the coil is energised. In Type 6213, the diaphragm is coupled to the plunger by a spring. According to Burkert, this version requires a minimum differential pressure of 0.5 bar; the pressure range extends to 10 bar. The valve closes with damping and operates quietly. The Kv value for water is 1.9 m³/h. According to Burkert, this version opens in 10–30 ms and closes in 100–150 ms.
Electrical connection and coil
The plug-on polyamide coil for 24 V AC 50/60 Hz (size 32 mm, insulation class B) sits on the centrally screwed pilot stage. The AC coil draws 24 VA at switch-on and 8 VA in holding mode; the rated power is 8 W. 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 not included and available separately.
Technical data at a glance
Circuit function A, 2/2-way, normally closed (NC) · Orifice DN 10 · Port connection internal thread G1/2 · Pressure range 0.5–10 bar · Kv value water 1.9 m³/h · Body brass · Seal NBR · Medium temperature -10 °C to +80 °C · Ambient temperature -10 °C to +55 °C · Voltage 24 V AC 50/60 Hz ±10 % · Rated power 8 W · Plug form A · IP65 with cable plug · Duty cycle 100 % · Installation length 50 mm · Weight 0.381 kg
What valve 252122 is suited for
According to the data sheet, the standard version is intended for liquids; it switches media that do not attack the body and seal materials (viscosity max. 21 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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