BURKERT 20047544 Type 5404 is a servo-assisted piston valve available in NC (Normally Closed) and NO (Normally Open) variants. A minimum differential pressure is required for the valve switching function. The solenoid coils are moulded with high-quality epoxy resin. To reduce power consumption in operation, coils with "Kick and Drop" (KD) electronics assembly (double coil technology) are available. In combination with a plug to DIN EN 175301-803 Form A, the valves satisfy degree of protection IP65.

• Servo-assisted piston valve with an orifice up to DN 50
• Explosion proof variant for Cat. 2
• Suitable for gas and steam applications up to +180 °C
• Relief valves for compressors
• Energy-saving double coil technology with kick and drop variant

General Technical Data

Product properties	Description
Seal	PTFE seat seal and FKM (PTFE seat seal and Graphite for steam variant)
Body	Brass
Coil	Epoxy resin (polyamide on request)
Valve inner parts	Stainless steel, brass
Orifice	DN 12...DN 50
Thermal insulation class	Epoxy resin coil class H (class B on request)
Duty cycle	100% continuous operation
Operating voltage	24 V DC, 24 V 50 Hz, 24 V 60 Hz, 110 V 50 Hz, 120 V 60 Hz, 230 V 50 Hz, 240 V 60 Hz
Voltage tolerance	±10%
Operating medium	Neutral gases and liquids (e.g. compressed air, water, hydraulic oil and steam)
Medium temperature	-10 °C...+ 120 °C (Standard variant)
Viscosity	Max. 21 mm²/s (21 cSt)
Degree of protection	IP65 with cable plug Type 2518
Installation position	As required, preferably with actuator upright

Circuit Functions

Symbol	Description
	Circuit function A (CF A) 2/2-way solenoid valve Servo-controlled Normally closed
	Circuit function B (CF B) 2/2-way solenoid valve Servo-controlled Normally open

Material Specifications

DN 12, Circuit Function A

No.	Element	Material
1	Nut	Steel (thick-film passivated according to RoHS)
2	Coil	Epoxy (polyamide optional)
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 (EPDM optional)
8	Flange	Steel (thick-film passivated according to RoHS)
9	Cover	Brass
10	O-ring	FKM (EPDM optional)
11	Spring	Stainless steel 1.4310/301
12	Piston ring	PTFE
13	Piston	Brass
14	Valve body	Brass
15	Piston seal	PTFE

Dimensions

Threaded Variant DN 12

Note

• Dimensions in mm
• The dimensions D1 and F1 apply to G thread.
• The dimensions D2 and F2 apply to NPT thread.
• The dimensions D3 and F3 apply to Rc thread.

Safety Instructions

DANGER!

Risk of injury due to high pressure and escaping medium

• Switch off the pressure before working on the device or system. Vent or drain the lines.

Risk of injury from electric shock

• Switch off the power supply before working on the device or system. Secure against reactivation.
• Observe the applicable accident prevention and safety regulations for electrical devices.

WARNING!

Risk of injury due to improper installation

• Installation must always be carried out by trained technicians with the appropriate tools.
• Secure the system against unintentional activation.
• Ensure a controlled restart after installation.

Installation

NOTICE!

Breaking hazard

• 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. Seal material must not get into the device. Pay attention to flow direction: The arrow on the body indicates the flow direction.