BURKERT 20037071 (Type 0330) is a direct-acting, media-separated 3/2-way pivoted armature solenoid valve. Designed for controlling, shutting off, and dosing neutral and aggressive media, this specific configuration features a highly chemical-resistant PVDF (Polyvinylidene fluoride) body and FKM (Fluor rubber) seals. The coil system is separated from the medium by a diaphragm, making the valve especially suitable for critical media such as aggressive acids and alkalis.

This model operates as a Circuit Function E mixing valve, where normally inlet port 1 (P1/NC) is closed and inlet port 3 (P2/NO) is connected with outlet port 2 (A/OUT). It features a 4.0 mm orifice, G 1/4 internal thread connections, and operates on a 24V DC power supply. The valve is equipped with a service-friendly, robust manual override for start-up and testing.

General Technical Data

Property	Value
Orifice	DN 4.0 mm
Circuit Function	E (3/2-way mixing valve)
Body Material	PVDF (Polyvinylidene fluoride)
Seal Material	FKM (Fluor rubber)
Port Connection	G 1/4 Internal thread
Voltage	24 V DC
Pressure Range	0 to 2.00 bar
Medium Temperature	0 °C to +80 °C
Ambient Temperature	0 °C to +55 °C
Kv Value (Water)	0.3 m³/h
QNn Value (Gas)	325 l/min
Degree of Protection	IP65 (with correctly connected cable plug)
Duty Cycle	100% continuous operation (for 5 W variant) / 40% duty cycle in 30 min (for 8 W variant)

Circuit Function

Circuit Function E (CF E) 3/2-way mixing valve (solenoid valve). Normally inlet port 1 (P1/NC) closed, inlet port 3 (P2/NO) connected with outlet port 2 (A/OUT).

Dimensions

Plastic Body (PVDF)

Installation Note

The device can be attached via the existing holes on the bottom side. The hole pattern is 38x24. For plastic bodies, use either self-tapping screws or a body with metric thread inserts. The maximum screw-in depth of 10 mm must be observed.

Installation

WARNING

Risk of injury from high pressure in the system/device ▶ Before working on equipment or device, switch off the pressure and deaerate/drain lines.

Risk of injury from electric shock ▶ Before working on the system or device, switch off the power supply and secure against reactivation. ▶ Observe the applicable accident prevention and safety regulations for electrical devices.

Before Installation The installation position is flexible, but preferably with the actuator upright. Check pipelines for soiling and clean if required.

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

Manual Override When the manual override is locked, the valve cannot be electrically actuated.

Electrical Connection

Pin Assignment Standard Variant The pin assignment depends on the circuit function. For Circuit Function E, the connections are:

• Connection 1: P1
• Connection 2: A
• Connection 3: P2

Connection Instructions

▶ Connect L1/+ and N/– to terminals 1 and 2 independently of the polarity. ▶ Connect the protective conductor. ▶ Screw the cable plug (Type 2518 or 2509 in accordance with DIN EN 175301-803, Design A) in place, observing the maximum torque of 1 Nm. ▶ Check electrical continuity between coil and body (protective conductor function).