Founded in 1947, JMF Company has grown to be a leader in the U.S. rough plumbing and HVAC wholesale supply industry. For use with brass, copper and iron pipeFor water, oil, fuel, and natural gas applicationsNot for underground useMinimum Working Pressure 150 PSIMaximum Working Pressure 1200 PSIMinimum Working Temperature -65FMaximum Working Temperature 250F