Mercer

Mercer Valve Company provides a 100% USA manufactured high-quality safety relief valve. Their patented "Auto Seat Technology" has a proven extended seat life that will allow your valve to open, close, seat and seal over and over again. It increases seat life, reduces repairs, and gives the valve a consistent set pressure. 

Auto Seat Technology is a non-rising stem design that uses low rated springs to achieve a consistent set pressure. A fully guided disk and spring give the valve accurate set pressures and help with reseating after each pop. The lip seal seat creates a tighter seal up to set pressure allowing for less leakage. Mechanical stops allow the disk to open to the same point every pop, allowing for the same flow rate and limiting spring stress. Auto Seat Technology reduces the need for repair while giving an accurate set pressure and tight seal. 

8100
9100 Threaded
900 Flanged
9100 Mod 20
9500 Snap Pilot
9500 Modulating