Burkert Solenoid Valve 93970021, 2 port , NC, 230 V ac, 1in

  • RS Stock No. 804-1986
  • Mfr. Part No. 221637
  • Manufacturer Burkert
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): DE
Product Details

Burkert Solenoid Valve

The Burkert 221 series 1inG female solenoid valve has a supply voltage of 230VAC. This 2-port NC position valve has soft mechanical coupling between the main piston and pilot armature aids smooth operation and a precision-engineered main body path helps ensure quiet water hammer free operation. It is manufactured from brass and designed for use with water and inert liquids and gases.
Due to their internal complexity, these valves can only be used with clean neutral media Electrical connector can be ordered separately
Compact solenoid valves suitable for most gas and fluid handling applications. Where practical, valves are shown with a schematic diagram showing the (circuit) function. The diagram is laid out so that the left-hand side of the diagram describes the operation of the valve when the coil is energised. When the coil is de-energised, the spring (or servo-assist) return controls the valve and is described on the right-hand side of the diagram. The 3 / 2-way designation indicates a valve with three ports and two modes of operation. It is normal practice to refer to 2 / 2-way valves as two ways. The port designations A, B, P, P1, P2 and R are used on the schematic diagrams and are marked on the valve bodies. Valve bodies are marked for a specific circuit function but can often be used for other functions. Reference to the schematic diagrams and technical specifications indicates the appropriate connections and pressure capabilities when an alternative circuit function is required.

Features and Benefits

Maximum working pressure is 10bar
Compact size to aid installation when space is limited
Coupled spring diaphragm system opened without differential pressure
Flow factor(Kv) is 8.3m³/h
Orifice diameter is 20mm
Flow-optimized housing and diaphragm geometry for high flow
Operating temperature is between -10°C and 80°C
Power consumption is 10W
Sealed coil and high flow rate


Compressed air and vacuum systems
Heating and refrigeration
Water treatment and swimming pool technology


IP65 rated

Attribute Value
Supply Voltage 230 V ac
Number of Ports 2
Operation Pilot
Connection 1 in G Female
Connection Size 1in
Default Valve Position NC
Suitable Applications Liquid
Type 2/2
Orifice Diameter 20mm
Body Material Brass
Maximum Working Pressure 10 bar
Operating Temperature Range -10 → +80 °C
Minimum Operating Temperature -10°C
Maximum Operating Temperature +80°C
Thread Standard or Connection Type G
Series 221
Flow Factor Kv 8.3m³/h
Servo Assist Yes
Connection Gender Female
On back order for despatch 03/09/2020, delivery within 5 working days from despatch date.
Price (ex. GST) Each
$ 252.98
(exc. GST)
$ 290.93
(inc. GST)
Per unit
1 +