What is a EPR valve?
Sporlan Evaporator Pressure Regulating valves (EPRs) are designed to provide an economical means of accurately maintaining evaporator pressure and temperature under varying evaporator loads. The primary function of an EPR is to prevent the evaporator pressure from falling below a predetermined value or setting.
What is the KVP valve?
02 | 1 The KVP is mounted in the suction line after the evaporator and is used to: Maintain a constant evaporating pressure and thereby a constant surface temperature on the evaporator. The regulation is modulating. By throttling in the suction line, the amount of refrigerant gas is matched to the evaporator load.
Where is an EPR valve located?
Evaporator pressure regulators (EPRs) are a common sight in the machine room. Typically, you will find one on each and every suction line circuit on the parallel refrigeration system. EPR valves are also known as inlet, upstream, and back-pressure regulators.
Where should EPR valve be installed?
All Sporlan EPRs are applied at the outlet of the evapora- tor and control evaporator or valve inlet pressure only. To indicate this trait, the valve nomenclature describes valve operation as Open on Rise of Inlet pressure or ORI.
How do you adjust Alco TXV?
The TXV cannot be adjusted open or closed, it is a modulating valve. Turning the adjustment stem clockwise will only increase spring pressure causing a higher superheat. Turning the adjustment stem counterclockwise will decrease spring pressure reducing superheat.
What is a crankcase pressure regulating valve?
A crankcase pressure regulator (CPR) is a common accessory added to many low-temperature refrigeration applications, such as walk-in and reach-in freezers. They are designed to prevent the compressor’s motor from overloading when its crankcase pressure rises above its designed working pressure.
What is the primary function of an EPR valve?
The primary function of an EPR is to prevent the evaporator pressure from falling below a predetermined value or setting. A consistent evaporating temperature is maintained at the valve setting as evaporator loads decrease.