Liquid Pressure Regulators

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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.

• 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

• 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


A4A0, A4A0B, A4A0BS, A4A0E, A4A0ES, A4A0M, A4A0MS, A4A0P, A4A0PS, A4A0S, A4A0Z, A4A0EP, A4A0ESX, A4A0SX, A4W0E, A4W0ES

Minimum Working Temperature (C)

-45°C or -50°C

Minimum Working Temperature (F)

-50°F or -60°F

Maximum Working Temperature (C)


Maximum Working Temperature (F)


Maximum Pressure (bar)

27.6bar or 28bar

Maximum Pressure (psig)

400psig or 406psig

Body Material

Gray Iron, Ductlie Iron, Cast Steel

Flow Coefficient (Kv)

1.0 to 310 Kv

Flow Coefficient (Cv)

1.2 to 360 Cv

Pressure Regulator Type

Please Configure Part for Pressure Regulator Type Specification

Pressure Range (bar)

5.2 to 19.3bar or 500mm Hg to 8.3bar

Pressure Range (psig)

75 to 280psig or 20″ Hg to 120bar

Port Size (mm)

20mm to 150mm

Port Size (inch)

3/4″ to 6″

Capacity Plug

Full Capacity, 50%, 35%, 17%, N/A

Pressure Set Point (bar)

1.0 to 11.4bar

Pressure Set Point (psig)

15 to 165psig

Flange Type

FPT, ODS, Socket Weld, No Flange, Weld Neck

Connection Size

None or 3/4″ to 3-1/8″

Coil Type

Please Configure Part for Coil Type Specification

Motor Type

None, Motor Assembly- 120 V 50/60 Hz~4-20 mA Standard CAM, Motor Assembly- 24V 50/60 Hz~0-135 Ohm Standard CAM, Mounting Kit- Standard CAM, N/A

Strainer Type

With Strainer or Without Strainer

Check Valve Type

None, With CK-4, N/A

Valve Material

Standard Valve Material or Meets Pressure Equipment Directive (PED)


No Plating

Adaptomode Outlet Regulators – A4A Series2020-04-30T13:12:51+00:00

V300 Purger

The Parker V300 Rapid Purger is designed for use in refrigeration systems. They will purge non- condensable gas that can negatively affect system performance from the refrigeration system and improve the overall efficiency of the equipment.

Operation Style

4 to 20 Purge Points

Maximum Ambient Temperature (C)


Maximum Ambient Temperature (F)


Minimum Ambient Temperature (C)

Minimum Ambient Temperature (F)


Maximum Fluid Temperature (C)


Maximum Fluid Temperature (F)


Minimum Fluid Temperature (C)


Minimum Fluid Temperature (F)

Maximum Rated Pressure (bar)


Maximum Rated Pressure (psig)



120 or 240 VAC


Industrial Ammonia Refrigeration

The Parker V300 Rapid Purger is designed to safely and efficiently remove non- condensable gasses from industrial ammonia refrigeration systems. The V300 is an improvement over the successful V200 series and offers new features and benefits. The V300 is equipped with a RS- 485 communication port for easy interface to controller data transmission. All of the parameters accessible via the HDMI cable are now accessible via the serial channel. Further advancements include extended data logging time and password protection for factory calibration settings.


• Industrial Ammonia Refrigeration

Features and Benefits:

• Compact Design with equivalent capacity of our V200 model
• Made from 100% corrosion free components
• RS-485 communication capability
• Records purge cycles and purge time for up to 12 weeks
• Password protection prevents tampering
• Multiple language display
• Factory calibrated for plug and play functionality
• Automatically adjusts vent pressures based on conditions
• Energy saving sleep mode will activate with the lack of non- condensable gases
• Proprietary microprocessor control for all sensing
• Includes ½” Globe-T SW isolation valves for liquid, foul gas and suction lines
• Can be used with the 120 or 240 VAC
• Handles 4-20 purge points


• Removal of non- condensable gasses from Industrial Ammonia Refrigeration systems

V300 Purger2020-04-30T13:17:31+00:00
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