BURKERT 466911 is a servo-assisted piston solenoid valve belonging to the Type 5404 family, specifically configured as a steam variant (NA07). A minimum differential pressure is required for the valve switching function. The solenoid coils are moulded with high-quality epoxy resin. In combination with a plug to DIN EN 175301-803 Form A, the valves satisfy degree of protection IP65. This specific model features an NPT 1/2 internal thread, a 13 mm orifice, and is designed for medium temperatures ranging from -40 °C to 160 °C.

Circuit Function

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

Material Specifications (Steam Variant NA07)

The 466911 model utilizes PTFE and Graphite seals suitable for high-temperature steam applications.

No.	Element	Material
1	Nut	Steel (thick-film passivated according to RoHS)
2	Coil	Epoxy
3	Stopper	Stainless steel 1.4113/434
4	Armature guide tube	Stainless steel 1.4303/305
5	Plunger	Stainless steel 1.4113/434
6	Spring	Stainless steel 1.4310/301
7	Flange	Steel (thick-film passivated according to RoHS)
8	Plunger seal	PTFE
9	Cover	Brass
10	Piston ring	PTFE
11	O-ring	Graphite
12	Piston	Brass
13	Valve body	Brass
14	Piston seal	PTFE
15	Spring	Stainless steel 1.4310/301

(Material designation according to AISI)

Dimensions

Threaded Variant DN 13 (Steam Variant NA07)

Note

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

Coil size	DN	A	B	NPT thread D2	NPT thread F2	E	L	SW	H	J	K
5	13	93.1	107.1	NPT 1/2	13.7	40	65	27	32	20.5	45
6	13	93.1	107.1	NPT 1/2	13.7	40	65	27	40	23.5	51

Performance Specifications

Temperature/Duty Cycle Derating Diagram for Steam Variant NA07

Important Information for Continuous Operation

To ensure functional reliability during continuous operation: During long downtimes we recommend actuating at least 1–2 switching operations per day. High switching frequency and high pressure will reduce overall service life.

Safety Instructions

Risk of injury due to high pressure and escaping medium

Switch off the pressure before working on the device or system. Vent or drain the lines.

Risk of injury from electric shock

Switch off the power supply before working on the device or system. Secure against reactivation. Observe the applicable accident prevention and safety regulations for electrical devices.

Risk of burns/fire due to hot device surface

If the device is operated continuously, keep it away from highly flammable substances and media and do not touch with bare hands.