Bürkert Type 5282 is a servo-assisted 2/2-way diaphragm valve designed to control, shut off, and meter neutral media up to a viscosity of 21 mm²/s. The valve features a separating diaphragm that isolates the solenoid from the medium, making it highly suitable for aggressive and contaminated fluids. The standard brass body satisfies all European drinking water requirements, while stainless steel variants are available for more demanding applications.

The solenoid coils are molded with a chemically resistant epoxy. The 5282 is equipped with a service-friendly manual override for start-up and testing. Closing and opening times can be adjusted individually via side throttle screws to prevent pressure surges in liquid media.

Minimum Differential Pressure

The Type 5282 valve is servo-assisted. A minimum differential pressure (typically 0.2 or 0.5 bar depending on the cross-section) is required for the valve to function and open fully.

Circuit Function Conversion

The 3/2-way pilot valve can be easily converted from NC (Normally Closed) to NO (Normally Open) circuit function by rotating it 180° on the armature. Note: The circuit function can only be changed for variants up to 10 bar.

General Technical Data

Product Properties	Specifications
Orifice	DN 13 to DN 65
Seal Material	NBR, EPDM, FKM
Flange Body	Stainless steel 1.4581/316CB
Threaded Body	Brass (DIN EN 50930-6), Stainless steel (CF3M for DN13, 1.4581/316CB for DN20-50)
Coil Material	Epoxy (Class H thermal insulation)
Internal Valve Parts	Stainless steel, brass
Duty Cycle	100% continuous operation
Switching Time	Opening: 0.1...0.8 s, Closing: 1.0...4.0 s
Operating Voltage	24 V DC, 24 V 50/60 Hz, 230 V 50/60 Hz, 24 V AC/DC, 230 V AC/DC
Voltage Tolerance	±10%
Degree of Protection	IP65 with cable plug (DIN EN 175301-803 form A) or terminal box

Medium Data

Seal Material	Operating Medium	Medium Temperature
NBR	Neutral gases and liquids (e.g., compressed air, water, hydraulic oil)	0 °C to +80 °C
EPDM	Oil-free and grease-free media, alkalis, hot water	-25 °C to +90 °C
FKM	Hot air, per-solutions, hot oils	0 °C to +90 °C

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

No.	Element	Material
1	Coil	Epoxy
2	O-ring	NBR, EPDM, FKM
3	Cover	Brass, Stainless steel (1.4408/316 or 1.4581/316CB)
4	Spring	Stainless steel 1.4310/302
5	Diaphragm	NBR, EPDM, FKM
6	Diaphragm holder	Brass, stainless steel 1.4401/316
7	Valve body	Brass, Stainless steel (CF3M or 1.4581/316CB)
8	Manual override	PA

Dimensions (Standard Threaded Variant)

DN	A1	B1	G (D1/F1)	NPT (D2/F2)	Rc (D3/F3)	E1	L1	SW
13 (Brass)	109.0	123.0	G 1/2 (14)	NPT 1/2 (13.7)	Rc 1/2 (13.2)	40	65	27
13 (St. Steel)	108.0	124.0	G 1/2 (14)	NPT 1/2 (13.7)	Rc 1/2 (13.2)	40	65	27
20	115.0	131.0	G 3/4 (16)	NPT 3/4 (14.0)	Rc 3/4 (14.5)	60	100	32
25	121.5	142.0	G 1 (18)	NPT 1 (16.8)	Rc 1 (16.8)	70	115	41
32	122.0	147.0	G 1 1/4 (20)	NPT 1 1/4 (17.3)	Rc 1 1/4 (19.1)	85	126	50
40	126.0	156.0	G 1 1/2 (22)	NPT 1 1/2 (17.3)	Rc 1 1/2 (19.1)	85	126	60
50	142.5	177.5	G 2 (24)	NPT 2 (17.6)	Rc 2 (23.4)	115	164	70
65	142.5	185.0	G 2 1/2 (27)	NPT 2 1/2 (23.6)	-	115	180	85

(Note: Dimensions in mm. Refer to the full datasheet for flange and ATEX/IECEx variant dimensions.)

Approvals and Conformities

• Explosion Protection: Optional ATEX / IECEx Category 2 (Zone 1/21) variants available.
• North America: UL Listed, UL Recognized, CSA, and FM (Factory Mutual) Explosion Protection variants available.
• Drinking Water: Suitable for use in drinking water applications (PF39 up to +85 °C, PF36 up to +60 °C) in accordance with UBA assessment principles.
• DNV GL Classification: Accepted for installation on all vessels classed by DNV GL.