BURKERT 64419 (Type 0290) is a servo-assisted 2/2-way diaphragm valve. The valve opens without differential pressure. The opening process is facilitated by the fix-coupling of the diaphragm to the magnetic core. The integrated 'soft-kick' function ensures gentle opening. The solenoid coils are moulded with an epoxy that has a high level of chemical resistance. Kick and drop electronics are moulded into all DC solenoid variants for reduced electrical power consumption.

General Technical Data

Property	Description
Seal Material	NBR (FKM, EPDM available for other variants)
Body Material	Brass (Stainless steel 1.4581 available for other variants)
Coil Material	Epoxy
Valve Inner Parts	Brass, stainless steel
Orifice	DN 12...DN 50 (Standard variant)
Circuit Function	A (2/2-way solenoid valve, servo-controlled, normally closed)
Thermal Insulation Class	Epoxy coil class H
Duty Cycle	100% continuous operation
Voltage Tolerance	±10%
Degree of Protection	IP65 with cable plug
Installation Position	As required, preferably with actuator upright

Materials

No.	Element	Material
1	Coil	Epoxy
2	Stopper	Stainless steel 1.4105, 1.4113 or 1.4523 (optional)
3	Shading ring (AC variant only)	Brass variant: copper; Stainless steel variant: silver
4	Spring	Stainless steel 1.4310
5	Magnetic core	Stainless steel 1.4105 or 1.4113
6	Core guide tube	Stainless steel 1.4303
7	O-ring	NBR, FKM, EPDM
8	O-ring	NBR, FKM, EPDM
9	O-ring	NBR, FKM, EPDM
10	Diaphragm plate	Brass variant: CuZn37; Stainless steel variant: 1.4401
11	Diaphragm	NBR, FKM, EPDM
12	Body	Brass or stainless steel 1.4581
13	Pilot valve seat	Brass variant: MS; Stainless steel variant: 1.4401
14	Seat seal	NBR, FKM, EPDM

Dimensions

Threaded Variant

Note

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

DN	A	B	G (D1)	G (F1)	NPT (D2)	NPT (F2)	E	L	SW	J	H
12	80	94	G 1/2	14	NPT 1/2	13.7	40	74.5	27	81	40
20	106	122	G 3/4	16	NPT 3/4	14	60	100	32	93	49
25	110.5	131	G 1	18	NPT 1	16.8	70	115	41	98	49
32	120	145	G 1 1/4	20	NPT 1 1/4	17.3	85	126	50	106	49
40	124	154	G 1 1/2	22	NPT 1 1/2	17.3	85	126	60	106	49
50	176	211	G 2	24	NPT 2	17.6	115	164	70	133	72
65	176	218.5	G 2 1/2	27	NPT 2 1/2	23.6	115	179	85	133	72

Performance Specifications

Power Consumption (Standard Variant)

Orifice [mm]	Kv value water P→A [m³/h]	Port connection A/B and P	Inrush power AC [VA]	Inrush power AC/DC [W]	Holding power AC [VA/W]	Holding power AC/DC [W]	Weight [kg]
12	1.8	G 1/2	100	80	25/10	6	1.0
20	6.5	G 3/4	120	100	32/16	9	1.4
25	10.0	G 1	120	100	32/16	9	1.8
32	16.0	G 1 1/4	120	100	32/16	9	2.7
40	16.0	G 1 1/2	120	100	32/16	9	3.1
50	38.0	G 2	-	30	-	30	6.5

Note: The coil with Kick and Drop electronics is a universal current coil (frequency coding: UC) that is suitable for AC and DC.

Installation and Safety

Risk of injury from high pressure

Before loosening lines or valves, switch off the pressure and vent the lines.

Risk of injury from electric shock

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.

Risk of short circuit or media leakage

Make sure valve seats are properly seated. Carefully screw the coil and cable plug together, i.e. the valve and pipelines.

Dirt Trap Installation

For safe operation of the solenoid valve, a dirt trap (≤400µm) must be installed before the valve inlet. For devices with approval according to the European Gas Appliances Directive, installation of the filter is mandatory.

Spare Parts

The spare parts SET 1 (coil set) or SET 3 (wearing part set) can be ordered based on the identification number of the device. For variants with approval, repair may only be carried out by Bürkert.