BURKERT 20139777 Type 0331 is a direct-acting, media-separated pivoted armature solenoid valve. As a 3/2-way variant, it features maintenance-free pivoted armature technology and a service-friendly, robust manual override. The solenoid coils are moulded with a chemically resistant epoxy. Since the coil system is separated from the medium by a diaphragm, the valve is especially suitable for critical media such as aggressive acids and lyes.

This specific model (SKU 20139777) features a polypropylene (PP) body with a Bürkert flange 32 x 46 version A2 connection, NBR seals, and operates on 24 V DC. It has a 3.0 mm orifice and handles pressures from 0 to 8 bar.

General Technical Data

Property	Value
Orifice	DN 3.0 mm
Circuit Function	C (Normally closed, 3/2-way)
Body Material	PP (Polypropylene)
Seal Material	NBR (Nitrile rubber)
Port Connection	Flange (Bürkert flange 32 x 46 version A2)
Voltage	24 V DC
Power Consumption (DC)	Cold: 11 W, Warm: 8 W
Duty Cycle	40% duty cycle (60% intermittent operation) in 30 min for 8 W variant
Medium Temperature	0 °C to +80 °C
Ambient Temperature	Max. +55 °C
Degree of Protection	IP65 with cable plug

Circuit Function

Circuit Function C (CF C) 3/2-way solenoid valve, direct-acting, normally closed. Inlet port 1 (P/NC), outlet port 2 (A/OUT) connected with exhaust port 3 (R/NO).

Performance Specifications

Pressure Range and Flow Rate (PP Body, Standard Variant)

Circuit Function	DN	Kv Value Water (DC)	Pressure Range (Standard DC)	Pressure Range (Vacuum)
C	3.0 mm	0.15 m³/h	0...8 bar	-0.98...6 bar

Note

The Kv value at DC frequency is reduced by up to 10% to guarantee the function. Pressure data indicates overpressure to atmospheric pressure.

Dimensions

Installation & Electrical Connection

Installation Position

The installation position is flexible, but it is recommended to install with the actuator upright.

Dirt Trap

For safe operation of the solenoid valve, a dirt trap (≤ 500 µm) must be installed before the valve inlet.

Electrical Connection:

• Plug contacts according to DIN EN 175301-803 form A for cable plug Type 2518 or Type 2509.
• Connect L1/+ and N/– to terminals 1 and 2 independently of the polarity.
• Connect the protective conductor.