SC-1221 R410A Refrigerant Charging Control Valve Twin Set (1/4" Male - 5/16" Female)

This is a high-quality charging control valve twin set that eliminates refrigerant loss and the risk of refrigerant burns (frostbite) to the hand when removing the hose during high-pressure charging of air conditioning and refrigeration systems (especially R410A systems). It protects your safety by giving full control of refrigerant flow while evacuating the system or finishing the charging process. The twin pack allows simultaneous use on both the low and high pressure lines (or as a spare).

R410A Compatible Twin Charging Control Valve Set

• Package Contents: Contains 2 SC-1221 charging control valves for versatile use with your manifold set.
• Connection Sizes: The bottom is 5/16" SAE Female (fits the R410A service port) and the side outlet is 1/4" SAE Male (fits the manifold hose).
• Compact Dimensions: Ergonomic design suited to tight spaces, with a total length of 63 mm (2.48") and a side outlet length of 32 mm (1.26").
• Complete Sealing: Because the valve needle (core depressor) moves inside by turning, pressurized refrigerant in the system does not escape to the atmosphere and no charge weight is lost when connecting or disconnecting the hose.

Field Advantages and Technician Tips

• Especially when working with high-pressure R410A refrigerant, removing the hose directly from the service valve can cause serious frostbite. With the twin set, you can keep these control valves fitted to your hose ends, and after connecting to the valve, open the red valve to complete the work with zero risk.
• In inverter air conditioners that require precise charging, it prevents the refrigerant left in the hose from being wasted, minimizing customer complaints (undercharge).
• To ensure long life of the internal PTFE seals and needle mechanism, avoid over-tightening the red knob (with pliers or grips); closing it firmly by hand is enough for complete sealing.