Medium Pressure Normally Closed Solenoid Valve / DC12V Liquid Line Solenoid Valve

EVR20-078S Refrigeration Solenoid Valve Cast Iron Valve Body Material

The EVR20-078S solenoid valve can be controlled by the pressure controller, temperature controller, liquid level controller or other automatic control device and manual switch to control the opening and closing of the solenoid valve. It can be used in non-corrosive gas and the viscosity is not greater than the Enshi 2 ° E liquid. In a refrigeration system in which Freon is a medium, a solenoid valve controls the on and off of the liquid in the pipeline to prevent the main cylinder from being flushed. The control methods are normally closed, normally open, explosion-proof and so on.

Technical data:

Weight of EVR20-078S Refrigeration Solenoid Valve:

Testing of EVR20-078S Refrigeration Solenoid Valve:

EVR20-078S Refrigeration Solenoid Valve used in Refrigeration Unit:

What is the VALVE?

Valve is to control the flow of the fluid medium, flow, pressure, temperature and other mechanical devices. A valve is an essential part of a piping system. Valve fittings are technically the same as pumps and are usually discussed as a separate category. Valves can be operated manually or by hand wheel, handle, or pedal, and can be controlled to change the pressure, temperature, and flow rate of the fluid medium. Such valves may operate continuously or repeatedly with these variations, such as safety valves installed in hot water systems or steam boilers. Automatic control valves are used for more complex control systems based on external inputs (i.e. Automatic control valve does not need manual operation, according to its input and setting, so that the valve can accurately control the requirements of the fluid medium. According to the material, the valve is also divided into cast iron valve, cast steel valve, stainless steel valve, chromium-molybdenum steel valve, chromium-molybdenum-vanadium steel valve, two-phase steel valve, plastic valve, non-standard custom valve and other materials.

What is the REFRIGERANT?
A refrigerant that completes the thermodynamic cycle in a refrigerant refrigerator. It absorbs heat from objects cooled at low temperatures and transfers it to cooling water or air at high temperatures. In the refrigerator steam compression refrigerant, can be liquefied at room temperature or low temperature as a refrigerant, such as freon (fluorine, chlorine and bromine saturated hydrocarbons) derivatives, and azeotropically mixed working fluid (by two an azeotrope mixture solution in a certain amount of freon and hydrocarbons (propane, ethylene, etc.), ammonia, etc.; In a gas compression refrigerator, use a gas refrigerant, such as air, hydrogen, helium, etc. In the refrigeration cycle, the gas is always in the gaseous state; Absorption refrigerating machine using adsorbent and refrigerant composed of binary solution as the working medium, such as ammonia and water, lithium bromide (molecular formula: lithium bromide, white cubic crystal or granular) powder, easily soluble in water) and water; Steam jet refrigerators use water as a refrigerant. The main technical indicators of refrigerant include saturated vapor pressure, specific heat, viscosity, thermal conductivity, surface tension, etc.

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