Pilot Operated Solenoid Valves, also known as Hung Diaphragm, Assisted Lift, or Servo-Assisted Solenoid Valves are compact solenoid valves offering basic ON/OFF functionality and are specifically designed to provide safe conveyance, distribution and control of water services systems with pressure from 0.2-10bar.
Pilot Operated Solenoid Valves have two chambers separated by a diaphragm, when the valve is in closed position, water pressure acts on the upper side of the diaphragm and keeps the valve closed. When the coil is energised the armature moves away from pilot hole thereby allowing the pressure between upper and lower chambers to equalise and allow water to pass through the main orifice.Read More
Direct acting solenoid are independent of the incoming water pressure using a diaphragm directly linked to the armature. When the coil is energised the armature lifts the seal away from valve orifice thus allowing the liquid to flow through the valve. They are supplied in normally closed and provide effective on/off control of the liquid under low pressure applications typically less than 0.2 bar.Read More
The Proportional Solenoid Valve offer the same On/Off control as standard Pilot-Operated Solenoid Valves but with the added functionality to control the flow of water passing over the valve orifice. Proportional control is offered across hot and cold water supplies from 0.5 up to 12 litres per minute within dynamic pressure range from 0.5-10 bar.
The unique features offered by Hydralectric are derived from the use of a pre-tension spring to manage effective opening and closing and larger main spring to provide proportional control. The valve can be controlled using 24VDC power supply or pulse width modulated signal to provide variable control when used in closed loop systems.Read More
Latching solenoid valves, also referred to as bi-stable solenoid valves uses a permanent magnet attached to the armature, when energised with short 250msec 6 volt pulse the armature is forced into either open or closed state depending on the signal polarity. They provide effective on/off control of water services ranging from 0.2 – 10bar where a constant supply of electrical power is either not appropriate or available.