Bürkert 389544 (Type 7011) is a direct-acting and compact small plunger valve up to DN 2.4. The stopper and the core guide tube are welded together to increase pressure resistance and leak-tightness. Various housing and seal material combinations are available depending on the actual application. In combination with a plug conforming to DIN EN 175301-803 shape B, the valves satisfy degree of protection IP65.

• Direct-acting and compact small valve up to DN 2.4
• Slipped over coil system
• Simple and fast flange or manifold mounting
• Quick coupling (push-in fitting) for push-in connectors
• Explosion-proof variants available

General Technical Data

Product properties
Material
Seal	FKM
Body	Stainless steel 1.4305/303
Weight
Standard variant 24.5 mm solenoid coil	146 g (with G 1/8)
Standard variant 20 mm solenoid coil	120 g (with G 1/8)
Orifice	DN 1.2
Circuit function	A (Normally closed)
Thermal insulation class of solenoid coil	Epoxy coil class H
Performance data
Duty cycle (Single valve)	100 % resp. 50 % continuous operation
Switching time	Opening: 8...15 ms, Closing: 10...17 ms
Electrical data
Operating voltage	24 V DC
Voltage tolerance	± 10 %
Medium data
Operating medium	Neutral gases and liquids (e.g. compressed air, water, hydraulic oil, technical vacuum)
Medium temperature	-10 °C...+100 °C
Viscosity	Max. 21 mm²/s
Product connections
Port connection	G 1/8 Internal thread
Approvals and conformities
Degree of protection	IP65 with cable plug
Environment and installation
Installation position	As required, preferably with actuator upright
Ambient temperature	Max. +55 °C resp. +75 °C (depending on power level)

INFO

Measurement at +20 °C, 6 bar at the valve outlet acc. to DIN ISO 12238:2001, opening: pressure build-up 0…10 %, closing: pressure reduction 100…90 %.

Circuit Functions

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

Materials

No.	Element	Material
1	Nut	DIN 176 Surface finish thick film passivated KOSA0101
2	Stopper	Stainless steel 1.4113/434
3	Core guide tube	Stainless steel 1.4303 ST/305L
4	Shading ring	Copper (optional silver)
5	Core	Stainless steel 1.4113/434
6	Spring	Stainless steel 1.4310/301
7	Seal	FKM
8	Valve body	Stainless steel 1.4305/303
9	O-ring	FKM
10	Flange	Nickel-plated surface (stainless steel variant)
11	Coil	Epoxy

Dimensions

Threaded variant

Note

Dimensions in mm. Variants according to industry standard form B.

Port connection	A [mm]	B [mm]	C [mm]	D [mm]
Thread CF A (G 1/8)	8	25	15	10

Approvals and Conformities

• Explosion protection: Optional explosion protection (valid for coils with fixed cable outlet). ATEX: EPS 21 ATEX 1 128 X (II 2G Ex mb IIC T4 Gb, II 2D Ex mb IIIC T130 °C Db). IECEx: IECEx EPS 21.0045X.
• North America (USA/Canada): Valid for coils: UL Recognized for the USA and Canada according to UL 429 and CAN/CSA-C22.2 No. 139.
• Drinking water: Suitable for use in drinking water applications. The materials comply with the assessment principles (UBA) for materials in contact with drinking water (TrinkwasserV).
• Foods and beverages/Hygiene: FDA – Code of Federal Regulations (valid for the variable code PL02, PL03). USP – United States Pharmacopeial Convention (valid for the variable code PL04). EC Regulation 1935/2004.