Burkert 54220 (Type 0256) is a direct-acting 2/2-way plunger solenoid valve designed for controlling, shutting off, and dosing media. This specific model features a brass body with a G 3/8 internal thread, a 5.0 mm orifice, and operates on 24V DC. It is equipped with an NBR seal, making it suitable for neutral media such as compressed air, water, and oil within a temperature range of -10 °C to +90 °C. The valve operates in a normally closed (NC) circuit function and supports a pressure range of 0 to 2.5 bar. With a properly connected cable plug, it achieves an IP65 protection class.

General Technical Data

Product properties
Dimensions	See Dimensions section
Seal material	NBR (FKM, EPDM on request)
Body material	Brass (Stainless steel 1.4581 available for series)
Coil material	Epoxy
Orifice	DN 2.0...DN 12.0 (Model 54220: 5.0 mm)
Circuit function	A (Normally closed)
Thermal insulation class	Epoxy coil class H
Duty cycle	100 % continuous rating
Operating voltage	24 V DC (Model 54220)
Voltage tolerance	±10 %
Medium temperature (NBR)	-10 °C...+80 °C (Up to 90 °C per specific model data)
Viscosity	Max. 21 mm²/s (21 cSt)
Electrical connection	Plug contacts according to DIN EN 175 301 - 803 form A
Degree of protection	IP65 with cable plug
Installation position	As required, preferably with actuator upright
Ambient temperature	Max. + 55 °C

Circuit Functions

Symbol	Description
A (NC)	Circuit function A (CF A) 2/2-way solenoid valve Direct-acting Normally closed

Materials

No.	Element	Material
1	Coil	Epoxy
2	Spring	Stainless steel 1.4310
3	Core	Stainless steel 1.4105
4	Seal	NBR/FKM (EPDM on request)
5	Body	Brass, stainless steel 1.4581

Dimensions

Note: Dimensions in mm.

Body material	D	F [mm]	H [mm]	L [mm]	SW
Brass	G 1/4	12	91	74.5	22
Brass	G 3/8	12	91	74.5	22
Brass	G 1/2	14	94	74.5	27
Stainless steel	G 1/4	12	92	74.5	22
Stainless steel	G 1/2	14	95.6	74.5	27
Brass	G 1/4	12	92	56	22
Brass	G 3/8	12	92	56	22

Operating Conditions

Parameter	Value
Ambient temperature	Max. +55 °C
Storage temperature	-40 °C to +80 °C
Protection class	IP65 in accordance with DIN EN 60529/IEC 60529 with cable plug

Continuous Operation

Unless otherwise specified on the type label, the solenoid actuator is suitable for continuous operation. During a long downtime, it is recommended to actuate at least 1–2 switching operations per day to ensure functional reliability.

Installation and Safety

High Pressure and Electrical Hazards

• Risk of injury from high pressure: Before loosening lines or valves, switch off the pressure and bleed the lines.
• Risk of injury from electric shock: Before reaching into the device or the system, switch off the power supply and secure it against reactivation. Always connect the protective conductor and check electrical continuity between the coil and housing.

Before installation:

• Clean pipelines of any contamination.
• Install a dirt trap upstream of the valve inlet (≤ 500 µm).
• Installation position: any, preferably with actuator on top.

Installation:

• Do not use the coil as a lever arm.
• Hold the device on the housing using an open-ended spanner and screw into the pipeline.
• Observe the flow direction: the arrow on the housing indicates the flow direction.

Spare Parts

Order the spare parts kits by quoting the position numbers (Item 1: Coil set; Item 2: Wearing part set) and the identification number of the device.