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Pressure Regulator - A4 Dual Outlet

Brand: Parker Hannifin
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The A4 Outlet Pressure Regulator modulates flow of refrigerant gas or liquid to maintain a constant downstream pressure as set-for, despite fluctuations in load. 

The regulator will gradually close when downstream pressure begins to rise above the setting and will gradually open when pressure begins to fall below the setting.

These valves are generally ordered with close coupled strainer to prevent entrance of foreign material into the valve and the rest of the system.

Features

  • Pilot operated characterized Modulating Plug precise control 
  • Suitable for all common refrigerants and oil 
  • 27.6 bar (400 psig) design pressure (MRP) 
  • Flanges for threaded or welded steel pipe and copper tube (copper not for ammonia) 
  • Interchangeable parts 
  • Easy to service 
  • Close coupled strainers, optional 
  • Many control variations are possible with the use of a few Modules and kits 
  • Stainless Steel Diaphragm 
  • Chrome Plated Pilot Seat 
  • Manual Opening Stem
The A4 Outlet Pressure Regulator modulates flow of refrigerant gas or liquid to maintain a constant downstream pressure as set-for, despite fluctuations in load. 

The regulator will gradually close when downstream pressure begins to rise above the setting and will gradually open when pressure begins to fall below the setting.

These valves are generally ordered with close coupled strainer to prevent entrance of foreign material into the valve and the rest of the system.

Features

  • Pilot operated characterized Modulating Plug precise control 
  • Suitable for all common refrigerants and oil 
  • 27.6 bar (400 psig) design pressure (MRP) 
  • Flanges for threaded or welded steel pipe and copper tube (copper not for ammonia) 
  • Interchangeable parts 
  • Easy to service 
  • Close coupled strainers, optional 
  • Many control variations are possible with the use of a few Modules and kits 
  • Stainless Steel Diaphragm 
  • Chrome Plated Pilot Seat 
  • Manual Opening Stem
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Specifications

Brand

Body Material

  • Gray Iron

Capacity Plug

  • Full Capacity

Check Valve Type

  • None

Coil Type

  • 120 AC~ 60 Hz- Leaded Green LED Pilot Light, No Coil AC- No Coil Style, 120 AC~ 60 Hz- Leaded Standard

Connection Size

  • None, 2-1/2", 2"

Flange Type

  • None or Socket Weld

Flow Coefficient (Cv)

  • 7.2 to 70 Cv

Flow Coefficient (Kv)

  • 29 to 42 Kv

High Pressure Set Point (bar)

  • 15 psig or 40 psig

High Pressure Set Point (psig)

  • 1.0 bar or 2.8 bar

Low Pressure Set Point (bar)

  • 1.0 bar

Low Pressure Set Point (psig)

  • 15 psig

Maximum Rated Pressure (bar)

  • 27.6 bar or 20.7 bar

Maximum Rated Pressure (psig)

  • 400 or 300 psig

Maximum Working Temperature (°C)

  • 105°

Maximum Working Temperature (°F)

  • 220° F

Minimum Working Temperature (°C)

  • -45° C

Minimum Working Temperature (°F)

  • -50° F

Model Number

  • Please Configure Part for Model Number

Motor Type

  • None, Motor Assembly- 120 V 50/60 Hz 4-20 mA Standard CAM, Mounting Kit- Standard CAM

Plating

  • No Plating

Port Size (inch)

  • 3/4" to 2-1/2"

Port Size (mm)

  • 20 mm to 65 mm

Pressure Range (bar)

  • 500 mmHg to 8.3 bar to 500 mmHg to 8.3 bar, 500 mmHg to 8.3 bar to 0.35 to 10 bar, 0.35 to 10 bar to 0.35 to 10 bar

Pressure Range (psig)

  • 20” Hg to 120 psig to 20” Hg to 120 psig, 20” Hg to 120 psig to 5 to 150 psig, 5 to 150 psig to 5 to 150 psig

Pressure Regulator Type

  • Dual Outlet- Externally Equalized (Both Pilots), Dual Outlet- Externally Equalized (Low Pilot Only), Dual Outlet- Electric Shut-Off, Dual Outlet- Electrically Compensated

Strainer Type

  • Without Strainer or with Strainer

Valve Material

  • Standard Valve Material

Valve Type

  • A4ADOE, A4AODE, A4AODS, A4AODM
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Applications

  • Protect Compressor Motor from Overload (Hold-back
  • Hot Gas Bypass Capacity Control
  • Limit Refrigerant Pressure in a Liquid Line
  • Prevent Deep Vacuum in Booster Suction
  • Prevent Pressure Rise in Suction Main
  • Hot Gas Defrost Control
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