The Burkert Type 6213 (301549) is a servo-assisted 2/2-way diaphragm valve, normally closed (NC). Body and port: brass body, internal thread G3/8, orifice DN 10; sealing is made of FKM.
Circuit function and pressure range of version 301549
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; this spring coupling assists opening, so the valve already switches from 0 bar. According to the data sheet, a differential pressure of 0.5 bar is needed for the full cross-section; the pressure range extends to 10 bar. The valve closes with damping and operates quietly. For gas and vacuum applications, the DC version requires at least 0.5 bar according to the data sheet; the HP00 version opens without differential pressure. 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.
Actuator and connector of version 301549
The plug-on polyamide coil for 24 V DC (size 40 mm, insulation class H) sits on the centrally screwed pilot stage. The rated power of the coil is 10 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 G3/8 · Pressure range 0–10 bar · Kv value water 1.9 m³/h · Body brass · Seal FKM · Medium temperature 0 °C to +60 °C · Ambient temperature 0 °C to +55 °C · Voltage 24 V DC ±10 % · Rated power 10 W · Plug form A · IP65 with cable plug · Duty cycle 100 % · Installation length 50 mm · Weight 0.495 kg
Media and installation
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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