Designed for Performance

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.

• Four Refrigerant Saturation Temperature Rings: R22/R32/R454B/R410A
• Integrated sight glass to see refrigerant flow
• Rotating Pressure Marker
• Swappable hose holders (1/4” standard, 5/16” optional)​
• High-grip valve knobs for easy operation
• Piston valves for precision control
• Rubberized protective housing
• Hanging hook rotates and folds into housing

• Maximum Block Overpressure 800 psi (55 Bar)
• High Side Pressure Range 0 to 800 Psi (0 to 55 Bar)
• Low Side Pressure Range 30 inHg to 500 psi (-1 to 34 Bar)
• Low Side Overpressure Retard Protection 300 psi (20 Bar)
• Accuracy +/-1% Full Scale, Class 1A
• Operating/Storage Environment -40 to 158°F (-40 to 70°C), <90% RH Non-condensing
• Port Type: (3) 1/4” Standard SAE Male Flare Fittings, (1) 3/8” Standard SAE Male Flare Fitting (4-Port only)
• Dimensions: 8.1″ x 6.7″ x 3.5″ (207 mm x 170 mm x 90mm)
• Weight (4-Port) 3.95 lbs (1.79kg)
• Limited Warranty: 1 year