Products / Parker / Refrigeration and Air Conditioning / Adaptomode Outlet Regulators - A4A Series
The A4A outlet family of regulators include valves that control outlet pressure. Each regulator is available with an assortment of additional variations which enable one regulator to preform several functions.
The A4A outlet family of regulators are
compact, heavy duty, pilot operated, and have remarkable
functionality. 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. The regulator cannot
maintain set-for pressure if uncontrolled branch pipe lines feed
into the main pipeline downstream of the regulator. The valve’s
purpose is to modulate flow of refrigerant gas or liquid to maintain
constant downstream pressure as set-for, despite load fluctuations.
Markets:
• Industrial Refrigeration
• Commercial Refrigeration
Features and Benefits:
• Pilot operated characterized Modulating Plug for precise control
• Suitable for all common refrigerants and oil
• 28bar (406psig) design pressure (MRP)
• Unique modular construction
• Flanges 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:
• Depending on the specific variation of this valve, the application
may include, but is not limited to;
• Compressor Motor overload prevention, Hot Gas Bypass Capacity
Control, limiting refrigerant pressure in a liquid line, deep vacuum
prevention in booster suction, Pressure Rise prevention in suction
main, Hot Gas Defrost Control