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Parker Refrigerating Specialties Division
P-Series Solenoids and Pressure Regulators

P-Series Solenoids and Pressure Regulators

Product catalog summary

Contact Information: Parker Hannifin Corporation, Sporlan Division - Refrigeration Business Unit, located in Broadview, IL, provides contact details for inquiries.

Purpose: The P-Series solenoids and pressure regulators are designed for weld-in applications, reducing leaks and simplifying service. They offer enhanced pressure, temperature range, and flow capacities, with replaceable internal components for easy maintenance.

Product Features: These valves are compatible with various refrigerants, feature a cartridge-based design, increased flow capacity, and integral features to prevent contamination. They are lighter than traditional products and available in stainless steel for harsh environments.

Technical Data: The valves operate within a liquid temperature range of -60°C to 120°C and have a maximum rated pressure of 52 bar. They require a minimum pressure drop to open and have specific operating pressure differentials for AC and DC coils.

Function and Design: P-Series valves are normally closed and designed to minimize foreign material entry, reducing wear and operational issues.

Application Guide and Variations: The valves can function in various roles, including solenoids and regulators, with configurations for different operational applications.

Regulator Pilot Assemblies: These assemblies use a diaphragm and spring mechanism to control pressure, maintaining differential pressure between inlet and outlet.

Installation and Maintenance: Installation requires an upstream strainer, and maintenance involves replacing internal components without removing the valve body.

Specifications: The solenoid coil is water-resistant, meets NEMA 4 requirements, and operates at temperatures up to 180°C. It should be energized only when mounted on its corresponding solenoid tube.

Electrical Connections: Proper electrical connections are necessary, with supply circuits sized to ensure adequate voltage.

Material Lists: Detailed material lists include components made from stainless steel, neoprene, and PTFE.

Installation Procedures: Valves should be installed in accessible locations, with specific alignment and torque specifications for reassembly.

Maintenance and Service: Power must be disconnected before servicing, with detailed procedures for component maintenance provided.

Adjustment Operations: Procedures for manual opening stem operation and regulator pilot adjustment are outlined, emphasizing accurate pressure monitoring.

Safety and Caution: Qualified personnel must handle refrigeration systems, following safety procedures to prevent accidents.

Pressure Regulator Pilot Maintenance Procedures: Detailed steps for replacing the pressure pilot and solenoid pilot assemblies, including lubrication and torque specifications.

P-Series Service Pointers: Common issues and solutions are provided, such as cleaning and reinstallation for piston jamming.

Torque Recommendations: Table 2 provides torque specifications for proper assembly and sealing.

Dimensional Information: Clearance zones and dimensional data ensure proper installation and maintenance space.

Schematic Flow Diagrams: Diagrams illustrate control functions and operations for various valve configurations.

Intellectual Property and Liability: The document outlines liability and remedies concerning intellectual property rights, with limitations on the seller's liability.

Governing Law: The terms are governed by Ohio law, with disputes subject to Ohio courts.

Entire Agreement: The terms form the complete agreement, superseding prior agreements, with modifications requiring written authorization.

Compliance with Laws: The buyer must comply with applicable laws, indemnifying the seller against violations.

Safe Operation: Emphasizes the importance of qualified personnel and safety precautions to prevent damage.

Warranty: Products are warranted against defects for one year, covering only properly installed and maintained products.

Catalog excerpts

P-Series Solenoids and Pressure Regulators-1

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

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P-Series Solenoids and Pressure Regulators-2

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 Appendix...

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P-Series Solenoids and Pressure Regulators-3

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, pushing...

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P-Series Solenoids and Pressure Regulators-4

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 low...

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P-Series Solenoids and Pressure Regulators-5

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 maintain...

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P-Series Solenoids and Pressure Regulators-6

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

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P-Series Solenoids and Pressure Regulators-7

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 control...

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P-Series Solenoids and Pressure Regulators-8

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 work....

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P-Series Solenoids and Pressure Regulators-9

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 monitored...

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