Solenoid Valve Coil: Voltage, Power, and Replacement Guide
Solenoid Valve Coil: Voltage, Power, and Replacement Guide
A solenoid valve coil is the electromagnet that converts electrical energy into the magnetic force that opens or closes the valve. Carroland supplies coils built to common DIN connector dimensions, supporting a wide range of solenoid valve bodies, as an ISO 9001-certified fluid-control supplier since 1992.
What a Solenoid Valve Coil Does
Current through the wound copper coil creates a magnetic field that pulls the plunger against spring force. De-energise the coil and the spring returns the plunger to its seat. The coil itself does not block flow; it actuates the internal plunger or pilot that does.
Voltage and Current
DC coils of 12 V and 24 V are common on instruments and battery systems; AC coils of 24 V, 110 V, and 220 V suit fixed industrial supplies. Latching (bistable) DC coils hold position without continuous current, which extends battery life. Typical power is 2 to 15 W depending on frame size.
Connector and Form Factor
DIN 43650 (EN 175301-803) connectors in forms A, B, and C are the dominant standard, with options for LED indicators, surge suppression, and conduit or flying leads. Coils built to common DIN form factors fit standard sockets and valve bodies of the same form factor.
Temperature and Duty
Insulation class and the ambient operating range determine continuous vs intermittent duty. For hot or outdoor environments, confirm the coil’s temperature class and enclosure rating before commissioning.
Matching a Replacement Coil
Before fitting a replacement coil, match the voltage, wattage, connector form factor, and bore dimensions to the existing valve body. Coils with the same DIN form factor and bore seat into standard bodies, but electrical and dimensional mismatch will prevent proper actuation. For a full actuation and voltage overview, see our solenoid valve selection guide.
Why Source from Carroland
Carroland manufactures solenoid valve coils to common DIN form factors with documented voltage, wattage, and bore specifications, so they fit standard valve bodies of the same geometry. As an ISO 9001-certified supplier with in-house winding since 1992, we support custom voltages and OEM volumes. Related options include the 24 V solenoid valve and the 12 V solenoid valve families.
Frequently Asked Questions
What does a solenoid valve coil do?
It is the electromagnet that moves the valve’s plunger or pilot when energised, opening or closing the flow path. Without the coil the valve cannot actuate electrically.
What voltages are available for solenoid coils?
Common DC voltages are 12 V and 24 V; common AC voltages are 24 V, 110 V, and 220 V. Latching DC coils are used where continuous power is unavailable.
How do I know which coil fits my valve?
Match four things: DIN connector form factor, bore diameter, voltage, and wattage. Measuring the old coil and the valve body bore is the safest way to confirm a fit.
What is a latching solenoid coil?
A latching (bistable) coil holds its position with a short pulse and needs no holding current, which makes it ideal for battery and solar-powered systems.
Can I replace just the coil and keep the valve body?
Yes, provided the replacement coil shares the same DIN form factor, bore, voltage, and wattage as the original. Always verify dimensions before fitting.