- Built-in automatic reset check valve prevents reverse flow of gases by cutting off the gases under back pressure;Before disconnection, gas must be shut off at regulators;Color codes provide speed and safety;QC-RHF-A has A-Connection - WARNING: This product can expose you to Lead, a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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