BURKERT 334561 Type 6281 is a servo-assisted 2/2-way diaphragm valve designed for controlling, shutting off, and dosing neutral media. This specific model features a brass body, 3/4" NPT internal thread connection, and operates on 24 V DC. It is equipped with an FKM (Fluor rubber) seal, supporting a medium temperature range of 0 °C to +120 °C and an operating pressure of 0.2 to 10 bar.

Valve 6281 is a servo-assisted diaphragm valve. A minimum differential pressure is always required for the valve to function. The standard brass body meets European drinking water requirements. To reduce electrical power consumption during operation, coils with integrated Kick-and-Drop (KD) electronics featuring double coil technology are available.

General Technical Data

Feature	Specification
Orifice	20.00 mm (DN 20)
Kv value (water)	8.5 m³/h
Body material	Brass
Seal material	FKM (Fluor rubber)
Operating voltage	24 V DC
Pressure range	0.2 - 10 bar (PN 16)
Medium temperature	0 °C to +120 °C
Ambient temperature	Max. +55 °C
Degree of protection	IP65 with cable plug

Circuit Function

Circuit function A (CF A) 2/2-way solenoid valve, servo-controlled, normally closed.

Material Specifications

No.	Element	Material
1	Coil	Polyamide or epoxy
2	Stopper	Stainless steel 1.4113
3	Shading ring	Cu (brass variant)
4	Magnetic core	Stainless steel 1.4113
5	O-ring	FKM
6	Core seal	FKM
7	Spring	Stainless steel 1.4310
8	O-ring	FKM
9	Diaphragm	FKM
10	Diaphragm holder	PPSGF40
11	Valve body	Brass acc. to DIN EN 50930-6

Dimensions (Threaded Variant)

Note: The dimensions F2 and G2 apply to NPT thread.

Safety Instructions

Danger from high pressure: Before loosening lines and valves, turn off the pressure and vent the lines.

Danger due to electrical voltage: Before reaching into the device or the system, switch off the power supply and secure it against reactivation. Observe the applicable accident prevention and safety regulations for electrical devices.