Valves and regulators for Gas Defrosting Ammonia Evaporators Type

The following valves and controls are used in the hot gas defrost systems ammonia evaporators type:

Hot gas or pilot solenoid valve. Valve 1/8. ported solenoid valve. This is a direct operated valve suitable as a liquid, suction, hotgas, or pilot valve at pressure up to 300 pounds.

Suction of liquid or gas solenoid valve. Suction-solenoid one piston, pilot-operated valve suitable for suction on liquid or gas lines at pressures up to 300 pounds. It is available with 9/16. or 3/4 inch. port.

Pilot solenoid valve is controlled. Valve one piston, pilot operated solenoid valve is used as a positive shut-off valves for applications above 30F (34C) on gaseous or liquid.

Pilot-operated two-piston valve. Solenoid valve is durable, pilotoperated, two-piston valve with spring return for a positive closure under the most adverse conditions. It is used for the compressor station, fluid intake, and hot gases.

Gas solenoid valve. The gas solenoid valve is the power piston valve that uses high pressure to force open the valve, control valves. Due to the high power, to open these valves, heavy sources can be used for closing valves positively at temperatures up to 90F (68C).

Dual-control valve. Dual-control valve is designed to work in two predetermined without pressure relief or adjustments. Only for opening and closing of the pilot solenoid or low or high pressure setting is maintained.

Reinstalling the safety valve. Closed safety valve, as a rule, is used as a relief for the regulator to maintain the required pressure in the system. Pressure is maintained valve is adjusted manually. Back-pressure regulator arranged full capacity. Back-pressure regulator, as a rule, is used where the control of pressure in the evaporator is not required, as in a direct expansion system. Solenoid pilot is under tension to pressure to get around the sensing chamber of the regulator holding the valve is wide open. A breakdown of the pilot valve allows the valve to restore its functions as a regulator of the pressure maintaining of the specified pressure before the valve. Valve performs as suction solenoid and as a relief to the regulator.

Differential pressure relief valve. Differential pressure relief valve pressure regulator regulator for the gas or liquid. It will maintain a constant preset pressure difference between the upstream and downstream sides of the regulator.

Reverse pressure regulator. In the reverse pressure regulator is used to maintain the set pressure at the outlet of the valve. When complete shutoff regulator is required, the pilot valve is installed in the upstream feeder links. When the solenoid valve controller locked tight. When the solenoid valve is open, the controller operates as pressure requirements. With electromagnetic installed as described above, it becomes a combination of reverse regulator and valves.

Gas non-return valve. Gas-powered-return valve passes normally open position a strong spring. Gas pressure applied on top of the valve (valve positively against high pressure in the system. Manual opening of the stem is standard.

Non-return valve. Check valve-spring-positive-return valve with manual opening of the stem. It is used to prevent copying with relatively high pressure in the lower pressure in the line.

In line check valve. Built-in check valve is used in several branch liquid line fed one solenoid valve. This check valve prevents the circulation between the evaporators during cooling. Built-in check valve is also used between the drain pan and evaporators to prevent freezing in the drain pan during cooling.

These valves and control is needed. They cause defrosting operation will take place in the large evaporators used for commercial work. Some production operations also require a large-capacity refrigerating equipment.