Burkert 351905 Type 6013 is a direct-acting 2/2-way plunger solenoid valve designed for reliable fluid control. The stopper and the core guide tube are welded together to increase pressure resistance and leak-tightness. A variety of seal material combinations are available to suit different applications. A Bürkert-specific flange variant (SFB) enables the space-saving arrangement of valves on a multiple manifold. The 351905 model specifically features a 1.5 mm orifice, brass body, NBR seal, and an ATEX/IECEx approved wire cable connection for hazardous locations.

General Technical Data

Product Properties	Specification
Dimensions	See Dimensions section
Seal Material	FKM, PTFE/Graphite (EPDM/NBR on request/specific models)
Body Material	Brass, stainless steel 1.4305/303
Coil Material	Polyamide, epoxy
Orifice	DN 2.0 to DN 6.0 (1.5 mm for model 351905)
Circuit Function	A (Normally closed) and B (Normally open)
Thermal Insulation Class	Polyamide coil class B, Epoxy coil class H
Duty Cycle	100% continuous operation; Intermittent operation 60% (30 min) or with 5 W coil
Operating Voltage	24 V DC, 24 V 50 Hz, 24 V 60 Hz, 120 V 50 Hz, 230 V 50 Hz, 240 V 60 Hz
Voltage Tolerance	±10%
Operating Medium	Technical vacuum, neutral gases and liquids (e.g., compressed air, water, hydraulic oil)
Medium Temperature (FKM)	-10 °C to +100 °C (PA coil), -10 °C to +120 °C (Epoxy coil)
Viscosity	Max. 21 mm²/s
Electrical Connection	ATEX/IECEx variant with 3 m moulded cable or terminal cable; Plug contacts according to DIN EN 175301-803 form A
Port Connection	G 1/8, G 1/4, G 3/8, NPT 1/8, NPT 1/4, NPT 3/8, manifold (SFB)
Degree of Protection	IP65 with cable plug
Installation Position	As required, preferably with actuator upright
Ambient Temperature	Max. +55 °C

Circuit Functions

Symbol	Description
CF A	2/2-way solenoid valve, Direct-acting, Normally closed
CF B	2/2-way solenoid valve, Direct-acting, Normally open

Approvals and Conformities

Conformity Notes

The approvals and conformities listed below must be stated when making enquiries. Not all available variants can be supplied with all mentioned approvals.

Explosion Protection Optional explosion protection according to category 2 (zone 1/21) or category 3 (zone 2/22) is available.

• ATEX (Coils with cable outlet): EPS 18 ATEX 1232 X II 2G Ex mb IIC T4 Gb / II 2D Ex mb IIIC T130 °C Db
• IECEx (Coils with cable outlet): IECEx EPS 18.0110 X Ex mb IIC T4 Gb / Ex mb IIIC T130 °C Db

North America (USA/Canada)

• UL Listed for the USA: UL 429 (electrically operated valves)
• UL Hazardous Locations: Class I, Zone 1; Class I, Division 2, Group A, B, C and D; Class II + III, Division 2, Group F and G
• CSA for Canada: CSA 139
• FM (Factory Mutual): Explosion Protection for Hazardous Locations

Drinking Water & Hygiene

• Suitable for use in drinking water applications (TrinkwasserV). PA body suitable up to +60 °C; PPS/brass/stainless steel body suitable up to +85 °C.
• FDA and USP compliant materials available on request.

Materials

Standard Variant

No.	Element	Material
1	Stopper	Stainless steel 1.4105/430F
2	Shading ring	Cu (brass variant), Ag (stainless steel variant)
3	Spring	Stainless steel 1.4310/301
4	Magnetic core	Stainless steel 1.4105/430F
5	Core guide tube	Stainless steel 1.4303/305/308
6	Seal	FKM, Graphite (high temperature variant)
7	Armature seal	FKM, PTFE
8	Valve body	Brass, Stainless steel 1.4305/303
9	Sub-base	Steel, surface finish thick-film passivated (brass variant); Stainless steel 1.4301/304 (stainless steel variant)
10	Cover	Polyamide
11	Coil	PA (polyamide), Epoxy
12	Nut	Steel, surface finish thick-film passivated (brass variant); Stainless steel 1.4305/303 PTFE coated (stainless steel variant)

ATEX/IECEx Cable Variant

No.	Element	Material
1	Nut	Steel (brass variant), Stainless steel 1.4305/303 PTFE coated (stainless steel variant)
2	Stopper	Stainless steel 1.4105/430F
3	Shading ring	Cu (brass variant), Ag (stainless steel variant)
4	Spring	Stainless steel 1.4310/301
5	Magnetic core	Stainless steel 1.4105/430F
6	Core guide tube	Stainless steel 1.4303/305/308
7	Seal	FKM, Graphite (high temperature variant)
8	Armature seal	FKM, PTFE (high temperature variant)
9	Valve body	Brass, Stainless steel 1.4305/303
10	Sub-base	Steel (brass variant), Stainless steel 1.4301/304 (stainless steel variant)
11	Cover	Polyamide
12	Coil	Epoxy

Dimensions

Standard Variant

Port connection	A [inch]	B [mm]	C [mm]	D [mm]	G [mm]
Thread	G/NPT 1/8	32	20.8	32.6	8
Thread	G/NPT 1/4	46	26.8	49	12
Thread	G/NPT 3/8	50	39.8	38	12
Flange	-	32	14.3	32.6	-

ATEX/IECEx Cable Variant

Port connection	A [inch]	B [mm]	C [mm]	D [mm]	G [mm]
Thread	G/NPT 1/8	32	20.8	32.6	8
Thread	G/NPT 1/4	46	26.8	49	12
Thread	G/NPT 3/8	50	39.8	38	12
Flange	-	32	14.3	32.6	-

Performance Specifications

Power Consumption (Circuit Function A)

Orifice [mm]	Power consumption	Inrush AC [VA]	Hold AC [VA]	Opening [ms]	Closing [ms]
2.0	8 W AC or 8 W DC	24	17	20	30
2.5	8 W AC or 8 W DC	24	17	20	30
3.0	8 W AC or 8 W DC	24	17	20	30
4.0	8 W AC or 8 W DC	24	17	20	30
6.0	8 W AC or 8 W DC	24	17	20	30

Installation and Safety Notes

Explosion Hazard

The device is a closed system. Do not dismantle it. In potentially explosive areas, the surface of the device must only be cleaned with a damp or anti-static cloth to prevent electrostatic charges.

Installation Position

The valve can be installed in any position, but it is recommended to install it with the actuator upright.

• Manifold Mounting: Close open ports for valves that are not required with cover plates. Fasten the manifolds to a standard rail. Comply with the permissible duty cycle (5 W variants with 100% continuous rating or standard 8 W mode with 60% duty cycle).
• Safety Testing: For safety instrumented systems, Partial Valve Stroke Testing (PVST) and Full Valve Stroke Testing (FVST) are recommended to detect failures not identified by automatic diagnostics. The expected service life of the valve is typically 3 to 10 years depending on operating conditions.