By Admin on Fri 10 February 2017 in Solenoid Valve FAQ's
A useful guide to many of the terms used within the world of solenoid valves. Part 2 of 2.
Valve Body Top Cover: It is used to close the solenoid valve and keep the diaphragm in position.
Solenoid Coil (Electromagnet): This is the electrical part and is composed of a coil of insulated copper wire wound on a former. The coil assembly may be over moulded with an integral iron bracket that forms part of the magnetic circuit.. When the coil is energised it produces a magnetic field that moves the armature.
Pipe Fitting: Depending on the solenoid valve type there are several variations of fluid connections available: Threaded pipe fitting with threads in inches; Male/Female(BSP, NPT, HAUS GARDEN) Bayonet connection Quick connection Spigot connection Hose connection Flanged pipe fitting
PN – Nominal Pressure or Static Pressure: This is the maximum static pressure that can be applied to the solenoid valve to check tightness of mechanical seals (threads, welds) and mechanical resistance of materials. We suggest that this pressure is applied simultaneously from all connections to avoid damage to internal components,seals in particular.
Maximum Working Pressure (S.W.P.): This is the line or system pressure which can be safely applied to the valve.
Power: This is the electromagnet rated capacity, which is expressed in Watts on direct current coils or VA for coils operating on alternating current.
Insulation Class: Refers to the maximum temperature rating for the insulation materials used in the solenoid coils. Two classes are normally available Class F for coils with a maximum temperature of 155ºC and Class H for a maximum of 180ºC