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