The Burkert 20040579 Type 0330 is a direct-acting, media-separated pivoted armature valve. As a 3/2-way variant (Circuit Function T), it can be used as a distributor or mixing valve for universal use. 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 alkalis. The 20040579 model specifically features a PVDF (Polyvinylidene fluoride) body, EPDM seal, G1/4 internal thread, 3.0 mm orifice, and operates at 24V DC.

General Technical Data

Property	Value
Orifice	DN 3.0 mm
Circuit function	T (3/2-way, universal use)
Thermal insulation class	Epoxy coil class H
Duty cycle (PP/PVDF)	100% continuous operation for 5 W variant; 40% duty cycle in 30 min for 8 W variant
Voltage	24 V DC (±10% tolerance)
Degree of protection	IP65 with cable plug
Installation position	As required, preferably with actuator upright

Circuit Function

Symbol	Description
	Circuit function T (CF T) 3/2-way solenoid valve Direct-acting Flow direction optional Normally closed

Materials and Media

Component	Material
Coil	Epoxy
Diaphragm / O-ring	EPDM
Valve body	PVDF (Polyvinylidene fluoride)

Operating Medium (EPDM): Alkalis, acids to medium concentrations, alkaline washing and bleaching lyes. Medium Temperature (EPDM with Plastic Body): -30 °C to +80 °C. Viscosity: Max. 37 mm²/s.

Dimensions

Plastic Body

INFO

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 screw-in depth must be observed.

D	L
G 1/4	12 mm
NPT 1/4	11 mm

Product Connections

Pin Assignment

The pin assignment depends on the circuit function. For Circuit Function T, the connections are as follows:

Circuit function	Connection 1	Connection 2	Connection 3	Diagram
T	NC	IN/OUT	NO

Safety Instructions

Risk of injury from high pressure

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.

Risk of burns

Keep the device away from highly flammable substances and media and do not touch with bare hands. The solenoid valve can become very hot during continuous operation.