Refrigerating Specialties A8 Series Pressure Regulators

Initially introduced as the A7, the current A8 pressure regulator is designed with flexibility in mind, covering both high and low side applications in commercial refrigeration systems. A dual range spring, standard in all A8 regulators (with the exception of the differential version), allows the valve to control at any set point within a 10" Hg to 400 psi (250mm Hg to 27.6 bar) pressure range. Three body sizes define the A8 line. The A8A is the smallest of the three, the A81 covers the mid-range applications, and the A82 is the largest. Along with the standard A8 inlet pressure regulator, optional variations include inlet regulators with electric shut off features (A8AS, A81S, A82S) and wide opening or bypass features (A8_B). In addition, outlet pressure regulators (A8_OE), outlet regulators with electric shut-off features (A8_OES), differential pressure regulators (A8_L), and differential regulators with wide opening features (A8_BL) round out the product line. Eight different "port" sizes (or capacity cartridges) are available in the A8 family of regulators with connection sizes ranging from 7/8" (22mm) up to 2-5/8" (66mm). All A8 regulators are ductile iron bodied valves with brazed copper couplings. Valve cartridges are also made of ductile iron. A water resistant class "H" coil enclosed in a general purpose coil housing is supplied as standard with any A8 regulator version. Solenoid coils can be supplied either with twin leads or with DIN connectors.

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