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Pressure Regulator- A4 Dual Outlet

These A4 regulators are compact, heavy duty, pilot operated, iron alloy Outlet Pressure regulators. 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.

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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.
 
Markets:
• Industrial Refrigeration
• Commercial Refrigeration
 
Features and Benefits:
• 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
 
Application:
• 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

Performance Characteristics  
Model Number
 Please Configure Part for Model Number
Maximum Rated Pressure (bar)
 27.6bar or 20.7bar
Maximum Rated Pressure (psig)
 400psig or 300psig
Minimum Working Temperature (C)
 -45°C
Minimum Working Temperature (F)
 -50°F
Maximum Working Temperature (C)
 105°
Maximum Working Temperature (F)
 220°
Flow Coefficient (Kv)
 29 to 42 Kv
Flow Coefficient (Cv)
 7.2 to 70 Cv
Valve Type
 A4ADOE, A4AODE, A4AODS, A4AODM
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
Pressure Range (bar)
 500mm Hg to 8.3bar to 500mm Hg to 8.3bar, 500mm Hg to 8.3bar to 0.35 to 10bar, 0.35 to 10bar to 0.35 to 10bar
Pressure Range (psig)
 20” Hg to 120psig to 20” Hg to 120psig, 20” Hg to 120psig to 5 to 150psig, 5 to 150psig to 5 to 150psig
Port Size (mm)
 20mm to 65mm
Port Size (inch)
 3/4″ to 2-1/2″
Capacity Plug
 Full Capacity
Low Pressure Set Point (bar)
 1.0bar
Low Pressure Set Point (psig)
 15psig
High Pressure Set Point (psig)
 1.0bar or 2.8bar
High Pressure Set Point (bar)
 15psig or 40psig
Flange Type
 None or Socket Weld
Connection Size
 None, 2-1/2″, 2″
Coil Type
 120 AC~ 60Hz- Leaded Green LED Pilot Light, No Coil AC- No Coil Style, 120 AC~ 60Hz- Leaded Standard
Motor Type
 None, Motor Assembly- 120V 50/60 Hz 4-20 mA Standard CAM, Mounting Kit- Standard CAM
Strainer Type
 Without Strainer or With Strainer
Check Valve Type
 None
Valve Material
 Standard Valve Material
Plating
 No Plating
Body Material
 Gray Iron

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