This hex head plug from GF Piping Systems is the ideal pipe fitting when you need to keep steady pressure and stable flow in your pipes. This hex head plug has a maximum temperature of 210 degrees F. This fitting falls into fittings schedule 80. The hex head plug has a maximum pressure of 484 psi @ 73 Degrees F. It fits a pipe size of 1/4". It comes in gray. Standards include: ASTM D1784, NSF14 Certified.