Extreme Ultra | A/C Leak Stop for HVAC/R Systems Up to 6 Tons (21 kW) | Works with All Refrigerants and Lubricants | Includes 1/4 SAE and 5/16 SAE Adapters | 0.2 fl oz (6 mL) Cartridge sold2020 Pressure Regulating Valve (PCV) Also

Pressure Regulating Valve (PCV) Also called the "breather valve" or "oil separator

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Extreme Ultra | A/C Leak Stop for HVAC/R Systems Up to 6 Tons (21 kW) | Works with All Refrigerants and Lubricants | Includes 1/4 SAE and 5/16 SAE Adapters | 0.2 fl oz (6 mL) Cartridge sold2020 Pressure Regulating Valve (PCV) AlsoExtreme Ultra A C Leak Stop for HVAC R Systems Up to 6 Tons (21 kW) Works with All Refrigerants and Lubricants Includes 1 4 SAE and 5 16 SAE Adapters 0. 2 fl oz (6 mL) Cartridge Product Features SEALS REFRIGERANT LEAKS: successfully stops small refrigerant leaks in A C and refrigeration systems. Perform a 5 minute vacuum test to ensure the leak can be repaired with Extreme Ultra THE SAFEST CHOICE POLYMER FREE FORMULA: does not react with moisture or