BURKERT 338347 Type 0331 is a direct-acting, media-separated pivoted armature solenoid valve. Designed for reliable control of neutral and aggressive media, this specific model operates as a 3/2-way variant with Circuit Function C (normally closed). The solenoid coils are moulded with a chemically resistant epoxy, and the coil system is completely separated from the medium by a diaphragm, making the valve exceptionally suitable for critical media applications.

The Type 0331 features a maintenance-free pivoted armature technology and is equipped with a service-friendly, robust manual override for easy start-up and testing. The 338347 variant specifically utilizes a brass body, NBR seals, a 3.0 mm orifice, and supports a pressure range of 0 to 10 bar.

General Technical Data

Feature	Specification
Orifice	DN 2 to DN 4 (3.0 mm for SKU 338347)
Body Material	Brass (Standard for 338347), Stainless steel (1.4401), PP, PEEK, PVDF
Seal Material	NBR (Standard for 338347), EPDM, FKM, FFKM
Thermal Insulation Class	Epoxy coil class H
Duty Cycle	100% continuous operation (for brass and stainless steel bodies)
Degree of Protection	IP65 with cable plug
Installation Position	As required, preferably with actuator upright
Ambient Temperature	Max. +55 °C

Medium Compatibility

With NBR seals, the valve is suitable for neutral mediums such as compressed air, town gas, water, hydraulic oil, oils and greases without additives, and oxygen. The medium temperature range for NBR with a brass body is 0 °C to +80 °C.

Circuit Functions

The Type 0331 family supports multiple circuit functions. The 338347 model is configured for Circuit Function C.

Circuit function C (CF C): 3/2-way solenoid valve, direct-acting, normally closed.

Material Specifications

No.	Element	Material
1	Coil	Epoxy
2	Diaphragm	NBR (for 338347), EPDM, FKM, FFKM
3	O-ring	NBR (for 338347), EPDM, FKM, FFKM
4	Seat	Brass (for 338347), Stainless steel, PP, PEEK
5	Valve body	Brass (for 338347), Stainless steel, PP, PEEK

Dimensions

The following dimensions apply to the standard variant with a metal body (brass or stainless steel).

Note

Dimensions are in mm. The dimensions of the cable plug Type 2518 or 2509 are specified in their respective data sheets.

Performance Specifications

Pressure range and flow rate for standard variant (Brass, stainless steel, or PEEK body):

Circuit Function	DN	Kv value water (m³/h)	Pressure range Standard (bar)	Pressure range Vacuum (bar)
C (Normally Closed)	2.0	0.10	0...16	-0.98...10
C (Normally Closed)	3.0	0.15	0...10	-0.98...6
C (Normally Closed)	4.0	0.18	0...5	-0.98...3

(Note: SKU 338347 features a 3.0 mm orifice, providing a Kv value of 0.12 m³/h and a standard pressure range of 0 to 10 bar.)