Description
The Parker 201620 is the flange bolt kit for A4A Series regulators, 4" 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: 201620
- Kit: flange bolt kit
- Listed for: A4A Series regulators, 4" port
- Contents per Parker kit table: four 7/8-9 x 4-1/2 bolts and four 7/8-9 nuts (no gaskets)
- Flange bolt torque per Parker: 150 ft-lb
- 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 four 7/8-9 x 4-1/2 bolts and four 7/8-9 nuts (no gaskets).
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.
