The HVACR Tech’s Trusted Companion
Designed for Performance
There’s comfort in relying on the tools you trained with – tools that feel familiar. Fieldpiece analog gauge sets are the rugged, dependable companions you can trust for system diagnostics, refrigerant recovery, pressure testing, and charging. The GS422F is equipped with four refrigerant saturation temperature rings and a rotating pressure marker to maximize use and minimize costs. Built to take the inevitable jobsite beating and deliver clear, accurate readings – you’ll work with confidence every time.
Includes:
• GS422F 4-Port Manifold
• (1) Operator’s Manual
Specifications
RGS22FH – Replacement Analog Gauge, High Side, Common + A2L, Fahrenheit
RGS22FL – Replacement Analog Gauge, Low Side, Common + A2L, Fahrenheit
RGS34FH – Replacement Analog Gauge, High Side, Refrigeration, Fahrenheit
RGS34FL – Replacement Analog Gauge, Low Side, Refrigeration, Fahrenheit
RGSK6 – Analog Gauge Set – 3-port replacement valves
RGSK8 – Analog Gauge Set – 4-port replacement valves
RGSH7 – Analog Gauge Set replacement hose holders
The RGSK8 includes: 4 sets of complete plunger valve assemblies including: hex nut, shaft, piston with gasket, o-rings, knob, knob screws and knob labels– enough to fully configure either the GS422F or GS434F.
The RGSH7 includes: (4) ¼” hose seat fittings, (2) 5/16” hose seat fittings, and (1) 3/8” hose seat fitting.
When installing the RGSK6 or RGSK8 valve and knob kit for your Fieldpiece analog gauge set, it is recommended to apply a thin layer of perfluoropolyether (PFPE) lubricant, such as HP-870, to the threads of the valve and the slot interface between the valve piston head and the threaded shaft. This will help to ensure a longer usable life of your valves and smooth, even operation.
Over time, the manifold block may become contaminated with dirt, oil, and other contaminants. If you are frequently flowing refrigerant through the manifold, we recommend that users should flush or clean their manifold every 2 to 4 weeks to avoid contaminants from building up within the manifold.
Reset the needle to zero using the adjustment screw.
Using a calibrated digital pressure gauge as a reference, pressurize to one or two test points to compare readings and verify the analog gauges are within accuracy specifications.
The gauges use a Bourdon tube with a dry mechanical anti-oscillation mechanism, assuring high accuracy and stable readings.
The pressure marker lets you visually track any pressure change without guessing the starting point. Align the pressure marker to the gauge needle to mark the starting pressure of a pressure test. After your pressure test is complete, you can quickly see if the needle has moved, indicating a change of pressure. Remember to account for any temperature changes that would affect the pressure during the test.
Both fittings have the same base brass material for durability. The 5/16” fittings have a silver zinc plating while the yellow brass is the 1/4″ fitting. In order to quickly identify the two sizes, the 5/16″ fitting was plated.
Fieldpiece gauges are compatible with commonly used A1, A2L and A3 refrigerants. To easily determine saturation temperature for the most common refrigerants, each gauge includes four temperature rings:
All Fieldpiece products have a 1-year limited warranty from date of purchase.