BURKERT Type 5282 (Model 466595) is a servo-assisted 2/2-way diaphragm solenoid valve designed to control, shut off, and meter neutral media. A minimum differential pressure is required for the valve to function. The standard brass body satisfies European drinking water requirements, and the separating diaphragm makes it suitable for aggressive and contaminated media. The 3/2-way pilot valve can be easily converted from a normally closed (NC) to a normally open (NO) circuit function by rotating it on the armature. The solenoid coils are moulded with a chemically resistant epoxy, and the valve is equipped with a service-friendly manual override for start-up and testing.

General Technical Data

Property	Description
Dimensions	See Dimensions section
Seal Material	NBR, EPDM, FKM (Model 466595 uses NBR)
Threaded Body	Brass according to DIN EN 50930-6 (DN 13 stainless steel CF3M, DN 20...DN 50 stainless steel 1.4581/316CB)
Coil	Epoxy
Internal Valve Parts	Stainless steel, brass
Orifice	DN 13...DN 65 (Model 466595 is 32 mm)
Circuit Function	A (Normally closed) and B (Normally open)
Thermal Insulation Class	Epoxy coil class H
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 56 Hz, 230 V 56 Hz, 24 V AC/DC, 230 V AC/DC (Model 466595 is 24 V DC)
Voltage Tolerance	±10%
Operating Medium (NBR)	Neutral gases and liquids (e.g. compressed air, water, hydraulic oil)
Medium Temperature (NBR)	0 °C...+ 80 °C
Degree of Protection	IP65 with cable plug according to DIN EN 175301-803 form A
Installation Position	As required, preferably with actuator upright
Ambient Temperature	Max. + 55 °C

Circuit Functions

Symbol	Description
	Circuit function A (CF A) 2/2-way solenoid valve Servo-controlled, with manual override Normally closed
	Circuit function B (CF B) 2/2-way solenoid valve Servo-controlled, with manual override Normally open

Materials

No.	Element	Material
1	Coil	Epoxy
2	O-ring	NBR, EPDM, FKM
3	Cover	Brass (DN 13 stainless steel 1.4408/316, DN 20...DN 50 stainless steel 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 (DN 13 stainless steel CF3M, DN 20...DN 50 stainless steel 1.4581/316CB)
8	Manual override	PA

Dimensions

Standard Threaded Variant

Note

• Dimensions in mm
• The dimensions D1 and F1 apply to G thread.
• The dimensions D2 and F2 apply to NPT thread.
• The dimensions D3 and F3 apply to Rc thread.

DN	A1	B1	G (D1)	G (F1)	NPT (D2)	NPT (F2)	Rc (D3)	Rc (F3)	E1	L1	SW
13	109.0	123.0	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

Product Installation

Before Installation

Installation can be in any position, preferably with the actuator upright. Prior to installation, check pipelines for dirt and clean if required.

Dirt Filter

To ensure that the solenoid valve functions reliably, a dirt filter (≤ 500 µm) must be installed in front of the valve inlet.

Manual Emergency Actuation

Caution

When the manual emergency actuation is locked, the valve can no longer be actuated electrically.

Changing Valve Function

The delivery condition corresponds to the order key. Turning the pilot valve through 180° changes the circuit function of the valve. The circuit function can only be changed for variants up to 10 bar.

Discharge of medium due to leaking device

If the O-rings are forgotten or incorrectly inserted during installation of the pilot valve, the device will be damaged and medium will be discharged. Before screwing in the pilot valve, correctly insert O-rings into the depressions.

• Function NC: The pilot valve is installed in such a way that the manual emergency actuation points in the direction opposite to the direction of flow arrow.
• Function NO: The pilot valve is installed in such a way that the manual emergency actuation points in the same direction as the identification for the flow direction.

Setting the Switching Times

The closing and opening times of the valve can be changed if required with the side throttle screws.

Pressure surges

If closing times are fairly short, liquid media cause higher pressure surges. These may reduce the service life of the diaphragm and destroy other devices and components in the system. Discharge of medium can occur if the throttle screws are unscrewed too far.

Electrical Connection

Risk of injury due to electrical shock

Before reaching into the device / equipment switch off the power supply and secure to prevent reactivation. Always connect the protective conductor and check electrical continuity between coil and body.

1. Tighten cable plug (observing max. torque 1 Nm).
2. Check that seal is fitted correctly.
3. Connect protective conductor and check electrical continuity between coil and body.

Maintenance and Troubleshooting

If malfunctions occur, check whether:

• the device has been installed according to the instructions,
• the electrical and fluid connections are correct,
• the device is not damaged,
• all screws have been tightened,
• the voltage and pressure have been switched on,
• the pipelines are clean.

Malfunction	Possible cause
Valve does not switch	Short-circuit or coil interrupted Medium pressure outside the permitted pressure range Manual emergency actuation locked
Valve does not close	Internal space of the valve is dirty Manual emergency actuation locked