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These valves are servo operated main valves with screwed-on pilot solenoid valves.
These valves use an external pressure source for opening (which means that no differential pressure across the valve is required in order to maintain open state).
This makes the valve especially suitable for low-pressure suction lines.
This valve can be used in all types of refrigeration systems.
Within their specified pressure and temperature range these valves can be used for fluorinated refrigerants (R22, R134A, R404A, R12, R502 and Ammonia (R717).
These pilot operated solenoid valves can be installed in
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These are 2 step servo controlled main valves with screwed-on pilot solenoid valves.
These valves use an external pressure source for opening (which means that no differential pressure across the valve is required).
These are used in suction lines for opening against high differential pressure e.g. after hot gas defrost in large industrial refrigeration systems with ammonia or fluorinated refrigerants.
These valves open in two steps.
Step one opens to approx 10% of the capacity, when the pilot solenoid valve are activated.
Step two opens automatically after the pressure differential across the valve reaches approx 1.5 bar.
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These valves are specially developed to regulate pressure and temperature in refrigeration, freezing and air conditioning plants with fluorinated refrigerants and ammonia. This is a pilot operated main valve with screwed-in pilot valves mounted in an external pilot line. Main valves are used in refrigeration plant with dry evaporation , pump circulation, natural circulation. The regulator is available in two variants, first is designed to accept one pilot valve either screwed-in or mounted in an external pilot line. Second will accept three screwed-in pilot valves mounted in an external pilot line. Thus several functions can be performed by the same line.Product Price :Get Latest Price
These are angle way valves , which have adjustable opening pressure and cover the differential pressure range 2-8 bar (29-116 psi) The valve can be closed manually e.g during plant service and has back seating, enabling the spindle seal to be replaced with the valve still under pressure.
The valves are specially designed to prevent fluttering due to low velocity and/or low density. In consequences it is possible to apply the valves with wide fluctuations in capacity demands, i.e from maximum performance to part load. A flexible o-ring provides perfect sealing over the seat.
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Automatic liquid drainer is a combination of a float switch, 3/4" solenoid valve assembly. and 1/4" hand expansion valve, as well as necessary pipe and fittings, complete for field assembly as shown in figure. All are heavy duty devices intended for use with Ammonia, R-22, R-502 and other common refrigerants.
The purpose of automatic liquid drainer is to permit flow of liquid refrigerant only and to prevent the flow of vapour refrigerant. It is intended for use in draining liquid from defrosting evaporators, or heat recovery condensers ,into a lower pressure portion of the system.
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The three piece Ammonia Ball Valves are the most easily maintainable valve in its type. By removing three body connectors bolts and loosening the fourth, the body can be swung away using the fourth bolts as a fulcrum to carry out any maintenance on the valve. This feature allows the valve to be online and considerably reduces down time.
Application: Petroleum, petrochemical, Chemical, Refrigeration, air-conditioning and engineering industries. Valves are compatible with Ammonia, CFC, HCFC, Oil, Air, Chemicals, Gas, Acids, Alkalies, etc amongst many other media.
Safe working pressure: 27 Bar
Temperature: -46/+125deg.C
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These valves are used as a liquid control device for ammonia overfeed systems. The automatic flow regulator once set, maintains a constant flow rate of liquid to the evaporator. It also serves as a check valve to prevent back flow into the liquid line from the evaporator during pressure reversals which occur during hot gas defrost.
Available up to 400 TR systems.
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