BURKERT 458950 (Type 0330) is a direct-acting, media-separated pivoted armature solenoid valve. This specific model is configured as a 2/2-way normally open valve (Circuit Function B) with a 3.0 mm orifice. It features a robust brass body, FKM (fluor rubber) seals, and an NPT 1/4 internal thread connection. Designed for reliable operation, it runs on 240V 60Hz power and handles pressures from 0 to 10 bar.

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 highly suitable for critical media. The 0330 series is equipped with a service-friendly, robust manual override for start-up and testing.

General Technical Data

Property	Value
Orifice	DN 3.0 mm
Circuit function	B (2/2-way, normally open)
Body material	Brass
Seal material	FKM
Port connection	NPT 1/4
Voltage	240 V / 60 Hz
Pressure range	0 to 10 bar
Medium temperature	0 °C to +90 °C
Ambient temperature	Max. +55 °C
Duty cycle	100% continuous operation
Degree of protection	IP65 with cable plug
Thermal insulation class	Epoxy coil class H

Circuit Function

Symbol	Description
	Circuit function B (CF B) 2/2-way solenoid valve Direct-acting Normally open

Material Specifications

No.	Element	Material
1	Coil	Epoxy
2	Diaphragm	FKM
3	O-ring	FKM
4	Seat	Brass
5	Valve body	Brass

Dimensions

Metal Body (Brass)

Note

• Dimensions in mm
• For metal bodies, the minimum thread length at the middle connection is 7.5 mm.
• The dimensions D2 and L2 apply to NPT thread.

D1	L1	D2	L2
G 1/8	9	-	-
G 1/4	9	NPT 1/4	7.5

Product Connections

Pin Assignment Standard Variant

The pin assignment (marked No. 1, 2 and 3 in the drawing) depends on the circuit function. For Circuit Function B, the connection is as follows:

Circuit function	Connection 1	Connection 2	Connection 3	2-way
B	B	P	-

Safety and Installation

DANGER!

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.

WARNING!

Risk of injury due to improper installation ▶ Installation may only be performed by trained technicians and with the appropriate tools. ▶ Secure the system against unintentional activation. ▶ Ensure a controlled restart after installation.

Before Installation:

• The installation position is flexible. Preferably: actuator at the top.
• Check pipelines for soiling and clean if required.
• For safe operation of the solenoid valve, a dirt trap (≤ 500 µm) must be installed before the valve inlet.