Description
The Parker 200389 is the piston kit for A4A Series regulators, 1-5/8" and 2" port. Parker lists it in the parts kit tables for its A4A Series (Adaptomode) pilot-operated inlet pressure regulators, 3/4" through 4" port sizes.
Parker describes the A4A Series as pilot-operated, iron alloy (ASTM A126 Class B) regulators for ammonia, R-12, R-22, R-502, other common refrigerants and oil, built from interchangeable bolt-on modules.
Key specifications
- Parker part number: 200389
- Kit: piston kit
- Listed for: A4A Series regulators, 1-5/8" and 2" port
- Contents per Parker kit table: the piston and stem assembly with gasket
- A4A regulator maximum rated pressure: 400 psig (27.6 bar)
- A4A fluid temperature range: -50°F to 220°F (-45°C to 105°C)
Common questions
What does the kit include?
Parker lists the piston and stem assembly with gasket.
How do I confirm the right size?
Parker kits are matched to the valve port size. Check the port size on the valve nameplate before ordering.
Specifications are based on Parker Refrigerating Specialties Bulletin 23-06B (A4A Series Adaptomode Inlet Pressure Regulators). Confirm fit, ratings and application requirements before ordering.
Disclaimer: The image shown is a general representation of the product category and may not depict the exact part number offered. Actual product appearance, specifications, and configuration may vary.
