Liquid Level Controllers

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While primarily designed for Ammonia,this control is also suitable for R-22 and other non-corrosive liquids that have a specific gravity of 0.5 or more. The controller is ideal for the control of the operating level of liquid in liquid refrigerant accumulators and separators.

 

Although this is normally done with a solenoid valve, the controller can activate an alarm or a pump or similar device.

Construction

Mechanical Float: Light deep drawn body drawn in one piece. Ball & Stem are made from SS. Electronic control box made from ABS in an internation size 96X96 housing.

This device consists of two separate units, the float chamber and the electrical controller. The float chamber consists of a housing, float ball, float coil and coil enclosure. The float ball is located inside the housing and moves an attached magnetic stem up or down in an enclosure. The construction permits all high voltage connections and wiring to be made at a remote or non-hazardous location.
Gravity equalisation of the liguid level in the float chamber is a function of the liquid. For fluids having a high viscosity the response time will be slower. The level controller should not be used on water applications.

SOLENOID VALVE

Principles of operation

These valves are for Ammonia duty. The MSVA are pilot operated valves whilst the MDSVA are direct operated solenoid valves.

They are used in many applications such as cold stores, freezers, chilling applications etc.

 

Application

These valves must be installed in horizontal positions with the coil housing no more than 45 degrees from the vertical position.

Construction

The valve is made up from various metals. Whilst stainless stee is used for components like stems, plungers, the main body is made from CI/WCB.