BURKERT 457472 (Type 0330) is a direct-acting, media-separated 2/2-way pivoted armature solenoid valve. It features a maintenance-free pivoted armature technology and a vibration-proof, block screwed coil system. 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. This specific model features a PP (Polypropylene) body, EPDM seal, NPT 1/4 port connection, and operates at 24 V DC.

General Technical Data

Property	Value
Orifice	DN 2.0 mm
Circuit function	A (2/2-way, direct-acting, normally closed)
Body material	PP (Polypropylene)
Seal material	EPDM
Operating medium	Alkalis, acids to medium concentrations, alkaline washing and bleaching lyes
Medium temperature	-30 °C to +80 °C
Ambient temperature	Max. +55 °C
Viscosity	Max. 37 mm²/s
Voltage	24 V DC (±10% tolerance)
Port connection	NPT 1/4
Degree of protection	IP65 with cable plug

Materials

No.	Element	Material
1	Coil	Epoxy
2	Diaphragm	EPDM
3	O-ring	EPDM
4	Seat	PP (Polypropylene)
5	Valve body	PP (Polypropylene)

Dimensions

INFO

See the general notes in the operating instructions. 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
NPT 1/4	11 mm

Product Connections

Pin assignment standard variant

The pin assignment depends on the circuit function. For Circuit Function A (2/2-way, normally closed):

Circuit function	Connection 1	Connection 2	Connection 3
A	P	A	-

Performance Specifications

Pressure range and flow rate (Plastic body)

Circuit function	DN	Kv value water	Pressure range Standard DC	Pressure range Vacuum
A	2.0 mm	0.13 m³/h	0...12 bar	-0.98...10 bar

(Note: The maximum operating pressure is 10 bar for industry material PVDF. The K value at DC frequency is reduced by up to 10% to guarantee the function.)