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Parker LAC head pressure control valves have a brass body with copper connections. These valves are nonadjustable. They perform the function of limiting flow of refrigerant from the condenser and at the same time regulate the flow of hot gas around the condenser to the receiver during low ambient conditions, so as to keep the refrigerant in the liquid line at proper pressure. Each valve is factory tested to ensure positive leak-free performance.

• 210 PSI
• 1/2" OD

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Straight Through Electronic Regulator Valve #4 7/8" OD

• Bi-Polar Stepper Motor
  
  • Tight Seating Piston Pesign
    
    • Serviceable Construction
      
      • Construction Brass & Copper
        
        • Actuator Design Provides Great Resolution
          
          

Straight Through Electronic Regulator Valve #4 5/8" OD

• Bi-Polar Stepper Motor
  
  • Tight Seating Piston Pesign
    
    • Serviceable Construction
      
      • Construction Brass & Copper
        
        • Actuator Design Provides Great Resolution
          
          

Straight Through Electronic Regulator Valve #7 1-3/8" OD

• Bi-Polar Stepper Motor
  
  • Tight Seating Piston Pesign
    
    • Serviceable Construction
      
      • Construction Brass & Copper
        
        • Actuator Design Provides Great Resolution
          
          

The ORD valve is a pressure differential valve that responds to changes in the pressure difference across the valve, Figure 6 on the next page. The valve designation stands for Opens on Rise of Differential pressure. Therefore, the ORD is dependent on some other control valve or action for its operation. And in this respect, it is used with the ORI for head pressure control. As the ORI valve starts to throttle the flow of liquid refrigerant from the condenser, a pressure differential is created across the ORD. When the differential reaches setpoint, the ORD starts to open and bypasses hot gas to the liquid drain line. As the differential increases, the ORD opens further until its full stroke is reached at a differential of 10 psi above setpoint. Due to its function in the control of head pressure, the full stroke can be utilized in selecting the ORD. The standard pressure setting for the ORD is 20 psig. For systems where the pressure drop between the compressor and the receiver is higher than 14 psi, an ORD with a higher setting is available.

• 20 PSI
  
  • 5/8" OD
    
    

Sherwood Valve 3015C-600 Spring Kit for A8 Series Compact Wide-Range Pressure Regulator Valves

Parker commercial pressure regulator (S)PORT/(S)PORTII valves are designed with stainless steel bonnet bolts, adjusting stems, and piston and plug assemblies. The result is a regulator designed to withstand the rigorous application environment a low side regulator must endure. Models are available in combinations of connection sizes, port sizes and features as designated by the model code. Unlike some competitive models of low side regulators that utilize high pressure discharge gas as a pilot source, they are piloted with upstream pressure. This eliminates the requirement for hot gas headers, isolation devices, piping, and the labor associated with the installation of other valves. Flare connections from high pressure pilot lines are also eliminated, minimizing sources for prospective leaks. The valves are an integrated assembly of (4) modules: 1) a body, which contains no moving parts, 2) a capacity cartridge, which contains both piston and modulating plug, and defines the port size and onto which the pilot solenoids providing the"S" (shut-off) or"B" (bypass) features are added as required, 4) the bonnet, containing the range spring and adjustment screw, which is set for the value of pressure which the valve is to maintain. The unique modular design allows the regulator to be soldered into the line without disassembly, yet provides full access for disassembly, cleaning and servicing from the top only. Interchangeable capacity cartridges facilitate flow revisions should an undersized or oversized condition be encountered, while pilot adapters can be changed out to add features or even change functions.

• Retrofitting for additional evaporator capacity is simple and requires no pipe line revisions
• The piston and plug assembly can handle reduced flow conditions and controlling down to about 15% of the valve's maximum capacity
• 7/8" OD
• Designed entirely with corrosion resistant materials
• New cooler running coil and open frame coil housing
• New dual VAC age 208/240/60 Hz coil
• Conveniently located access fitting
• Pilot operated for close control at desired set-point
• Excellent regulation at light loads
• Interchangeable capacity cartridges
• Low pressure drop
• Few moving parts
• Long-life stainless steel diaphragms (no bellows to fail)
• Pilot electric shut-off
• All service from the top
• Sweat-in-place without disassembly

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Parker commercial pressure regulator (S)PORT/(S)PORTII valves are designed with stainless steel bonnet bolts, adjusting stems, and piston and plug assemblies. The result is a regulator designed to withstand the rigorous application environment a low side regulator must endure. Models are available in combinations of connection sizes, port sizes and features as designated by the model code. Unlike some competitive models of low side regulators that utilize high pressure discharge gas as a pilot source, they are piloted with upstream pressure. This eliminates the requirement for hot gas headers, isolation devices, piping, and the labor associated with the installation of other valves. Flare connections from high pressure pilot lines are also eliminated, minimizing sources for prospective leaks. The valves are an integrated assembly of (4) modules: 1) a body, which contains no moving parts, 2) a capacity cartridge, which contains both piston and modulating plug, and defines the port size and onto which the pilot solenoids providing the"S" (shut-off) or"B" (bypass) features are added as required, 4) the bonnet, containing the range spring and adjustment screw, which is set for the value of pressure which the valve is to maintain. The unique modular design allows the regulator to be soldered into the line without disassembly, yet provides full access for disassembly, cleaning and servicing from the top only. Interchangeable capacity cartridges facilitate flow revisions should an undersized or oversized condition be encountered, while pilot adapters can be changed out to add features or even change functions.

• Retrofitting for additional evaporator capacity is simple and requires no pipe line revisions
• The piston and plug assembly can handle reduced flow conditions and controlling down to about 15% of the valve's maximum capacity
• 1-1/8" OD
• Designed entirely with corrosion resistant materials
• New cooler running coil and open frame coil housing
• New dual VAC age 208/240/60 Hz coil
• Conveniently located access fitting
• Pilot operated for close control at desired set-point
• Excellent regulation at light loads
• Interchangeable capacity cartridges
• Low pressure drop
• Few moving parts
• Long-life stainless steel diaphragms (no bellows to fail)
• Pilot electric shut-off
• All service from the top
• Sweat-in-place without disassembly

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Parker 903406P Hot Gas Bypass Valve 1/2" 0/80,
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Crankcase Pressure Regulating Valve With Pressure Tap 3/8" OD 0/20 psi

• Parker Crankcase Pressure Regulating Valve with Pressure Crankcase Pressure Regulating Valves are designed to prevent overloading of the compressor motor by limiting the crankcase pressure to a predetermined maximum value during and after a defrost cycle or a normal shutdown period. These valves automatically throttle the vapor flow from the evaporator until the compressor can handle the load. Parker Sporlan manufactures five adjustable direct acting models CRO-4 all models respond only to their outlet pressure and modulate to prevent the suction pressure at the compressor from rising above the valve setting. Since these valves are adjustable, the setting may be altered to suit the specific system requirements.,
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Parker evaporator Pressure Regulating Valves are mechanical regulators which use highside system pressure as a source of operating power. They were developed specifically for systems where accurate control and minimum pressure drop are important requirements.1-3/8" OD

Uses MKC-1/PKC1 Coils,

Crankcase Pressure Regulating Valve With Pressure Tap 5/8" OD 0/60 psi

• Parker Crankcase Pressure Regulating Valve with Pressure Crankcase Pressure Regulating Valves are designed to prevent overloading of the compressor motor by limiting the crankcase pressure to a predetermined maximum value during and after a defrost cycle or a normal shutdown period. These valves automatically throttle the vapor flow from the evaporator until the compressor can handle the load. Parker Sporlan manufactures five adjustable direct acting models CRO-4 all models respond only to their outlet pressure and modulate to prevent the suction pressure at the compressor from rising above the valve setting. Since these valves are adjustable, the setting may be altered to suit the specific system requirements.,
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