Products / Parker / Refrigeration and Air Conditioning / Pressure Regulators- A4AD Adaptomode
The Type A4AD is a Dual Inlet Pressure Regulator capable of regulating at two different pressure set-points.
Parker’s A4AD pressure regulator features dual
pressure regulating pilots in a single housing which allows users to
control two different pressure set points without the need for
additional piping, valves, or controls. The active pressure
regulating pilot is selected using a standard pilot solenoid. This
simple control gives users flexibility in their process but keeps
implementation costs to a minimum. The A4AD is part of the popular
A4A line and features common components and service parts.
Markets:
• Industrial Refrigeration
• Commercial Refrigeration
Features and Benefits:
• Pilot Operated characterized Modulating Plug for precise control
• Suitable for all common refrigerants and oil
• 28bar (400psig) Maximum Rated Pressure (MRP)
• Flanges for threaded or welded steel pipe and copper tube (copper
not for ammonia)
• Unique modular construction
• 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:
• Capacity Control of an evaporator at two different pressure levels
to regulate temperature
• Evaporator Pressure Control combined with Defrost Pressure Relief