Refrigerating Specialties A4AT Temperature Compensated Pressure Regulators

These compact, heavy duty, pilot operated iron alloy (ASTM A126 Class B high strength semi-steel) Regulators are suitable for Ammonia, R22, R134a, R404a, R707 and other common refrigerants and fluids approved for use in refrigeration systems. Standard Temperature Range is -20 o F to 80 o F (-30 o C to +30 o C). Also available: 60 o F to 140 o F (20 o C to 60 o C). Maximum temperature to which thermal bulb can be exposed is 105 o F (65 o C). These valves are generally ordered with close coupled upstream strainer to prevent entrance of foreign material into the valve and the rest of the system. The temperature compensated pressure regulator differs from the conventional pressure regulator in that rather than maintaining a previously set con-stant pressure, this regulator modulates pressure in accordance with the demands of the load. The regulator will vary its pressure set point as load demand varies as sensed by the thermal bulb.

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