P-Series Solenoids and Pressure Regulators
26Pages

P-Series Solenoids and Pressure Regulators Product Bulletin 24-05 G Type: PS4, PA4 Purpose: P-Series solenoids and pressure regulators are weld-in, reducing potential for connection leaks and the simple valve design ease for service. This improved design has a higher working pressure, greater working temperature range and higher flow capacities than our legacy flanged product line. P-Series valves provide long-term performance with replaceable internal components. All moving parts are replaceable without having to remove the body from the line. Contact Information: Product Features: Parker Hannifin Corporation Sporlan Division Refrigeration Business Unit 2445 South 25th Avenue Broadview, IL 60155-3891 phone (708) 681-6300 fax (708) 681-6306 www.parker.com/refspec • Suitable for ammonia, CO2, R-22, R-134a, R-404a, R-410A, R-507 and other common refrigerants • Overall weight reduction up to 50% compared to traditional flanged products • Cartridge based design simplifies service and eliminates body wear • Coil options to meet various applications • Increased flow capacity enables smaller valve sizing • Stainless steel versions (PS4C, PA4C) are corrosion-resistant, suitable for harsh environments • Integral features prevent contaminants from reaching the pilot section of the valve

Table of Contents Technical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Manual Opening Stem Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 . . Suction Stop Bleed Rate Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Application Guide and Variations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Regulator Pilot Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Dimensional Information: Single Port Plate . . . . . . . . . . . . . . . . . . . 16...

Bulletin 24-05 G - Page 3 Solenoid Function When the solenoid coil is energized the magnetic field created pulls the plunger up. This allows flow to travel to the top of the piston and collect on the top side of the piston. When a pressure differential is met the piston pushes downward forcing the plug to a full open position allowing flow to the valve outlet. When the coil is de-energized the plunger returns to its normally closed seated position, by using spring force, terminating refrigerant flow to the top of the piston. A bleed hole in the piston allows for the continuous equalization,...

Page 4 - Bulletin 24-05 G Variation Type Suffix Regulator with Electric Wide Opening Port Plate Setup Typical Applications Controls inlet pressure or wide open/bypass regulator Regulates when not electrically energized; wide open when energized. 1. Wide open for maximum cooling 2. Regulating for defrost 3. Regulating for temperature control Regulates at lower pressure when electrically energized; at higher pressure when not energized. 1. Higher pressure for defrost 2. Higher pressure for temperature control 3. Internal pressure relief. 1. Defrost relief 2. Non-atmospheric relief 3. High to...

Regulator Pilot Assemblies Pressure Pilot Regulator Assemblies A4_ (B, S, D), A4K Adjustment Stem Range Spring Adjustment Stem Range Spring Outlet Pressure Pilot Seat Pilot Seat Inlet Pressure Flow Path Flow Path to the Power Piston The inlet pressure enters the space under the diaphragm through the inlet flow path. When the force created by the pressure exceeds the force of the range spring, the diaphragm is lifted off the pilot seat allowing pressure to enter on top of the power piston. This causes the power piston to move downward forcing the modulating plug to open and modulate to...

Material List: Control Module - Cartridge Assembly 2 Music Wire, ASTM A-228 Ductile Iron Ring, Piston Cartridge, Housing Material List: Control Module - Solenoid Pilot Assembly 1 Spring, Plunger Seat, Solenoid O-Ring, Adaptor Gasket, Adaptor Assembly Material List: Control Module - Regulator Pilot Assembly 1 Music Wire, ASTM A-228 Spring Plate, Bottom Follower, Diaphragm Gasket, Bonnet Adjustment Stem O-Ring, Diaphragm Plate, Bonnet Seat, Pilot O-Ring, Bonnet Assembly Bolt, Bonnet Stainless Steel, DIN ISO 3506-1 Grade A2 Gasket, Bonnet Assembly Washer, Adjustment Stem O-Ring, Adjustment Stem

Material List: Control Module and Body (Solenoid/Regulator Options) 9(4) Plug, Gauge Port Port Plate Stainless Steel CF3 (ASTM A351) Cast Steel - LCC (ASTM A352) Stem, Manual Opening Plug, Pilot Bolts, Port Plate Stainless Steel, DIN ISO 3506-1 Grade A2 Stainless Steel, DIN ISO 3506-1 Grade A2 Gasket, Port Plate Body, Valve Stainless Steel CF3 (ASTM A351) Cast Steel - LCC (ASTM A352) Washer, Packing Gasket, Port Plate Cap Control Port Multi Port Plate Single Port Plate Gasket, Control Port Cartridge Assembly Note: The description and material information for the cartridge assembly and...

Installation All valves are packed for maximum protection. Unpack carefully. Check the carton to make sure all items are unpacked. Save the enclosed instruction for the installer and eventual user. Do not remove the protective coverings from the inlet and outlet of the regulator until the regulator is ready to be installed. Protect the inside of the regulator from dirt and chips before and during installation. i Caution All personnel working on valves must be qualified to work on refrigeration systems. If there are any questions, contact Refrigerating Specialties before proceeding with the...

Regulator Pilot Adjustment Stem Operation The P-Series pilot adjustment stem is a non-rising stem. This design prevents foreign material from getting lodged in the threads and has less components than Refrigerating Specialties traditional A4 adjustment stem design. following the energization or de-energization of the solenoid features. Regulators with ‘B’ feature can only be adjusted with the pilot solenoid de-energized. Regulators with the ‘S’ feature can only be adjusted with the solenoid energized. Adjustment of a set regulators’ point requires that the pressure being controlled be...