Burkert Type 5404 (SKU 342037) is a servo-assisted 2/2-way piston valve designed for controlling, shutting off, and dosing neutral media. This specific model features a normally open configuration (Circuit Function B) with an NPT 1/2 internal thread and a 12.0 mm orifice. A minimum differential pressure is required for the valve switching function. The solenoid coils are moulded with high-quality epoxy resin, ensuring durability and reliable operation.

Constructed with a robust brass body and utilizing PTFE for the seat seal alongside FKM for external sealing, the valve is engineered to handle pressures ranging from 1 to 32 bar and medium temperatures between -10 °C and +110 °C. In combination with a plug to DIN EN 175301-803 Form A, the valve satisfies degree of protection IP65, making it suitable for demanding industrial environments.

General Technical Data

Property	Specification
Orifice	DN 12
Body Material	Brass
Seal Material	PTFE seat seal and FKM
Coil Material	Epoxy resin
Duty Cycle	100% continuous operation
Operating Medium	Neutral gases and liquids (e.g., compressed air, water, hydraulic oil)
Viscosity	Max. 21 mm²/s (21 cSt)
Installation Position	As required, preferably with actuator upright

Circuit Function

Circuit function B (CF B): 2/2-way solenoid valve, servo-controlled, normally open.

Material Specifications

The following cross-section illustrates the standard material construction for the DN 12 variant.

No.	Element	Material
1	Nut	Steel (thick-film passivated according to RoHS)
2	Coil	Epoxy
3	Stopper	Stainless steel 1.4105/303
4	Armature guide tube	Stainless steel 1.4303/305/308
5	Plunger	Stainless steel 1.4105/430F
6	Spring	Stainless steel 1.4310/301
7	Plunger seal	FKM
8	Flange	Steel (thick-film passivated according to RoHS)
9	Cover	Brass
10	O-ring	FKM
11	Spring	Stainless steel 1.4310/301
12	Piston ring	PTFE
13	Piston	Brass
14	Valve body	Brass
15	Piston seal	PTFE

Dimensions

Dimensions for the standard threaded variant DN 12. The dimensions D2 and F2 apply to the NPT thread configuration of this model.

Safety Instructions

Risk of injury from high pressure: Before working on the system or device, switch off the pressure and ventilate or empty the lines. Risk of injury from electric shock: Before working on the system or device, switch off the power supply and secure against reactivation. Always connect the protective conductor and check electrical continuity between the solenoid and body.

Installation Recommendations

• Clean pipes of dirt before installation.
• Install a dirt trap upstream of the valve inlet (≤ 500 μm).
• Do not use the solenoid as a lever arm. Hold the device on the body using an appropriate tool (e.g., open-end wrench) and screw into the pipeline.
• The valve body must not be installed under tension.