Mercer Valve Co. has been engineering and manufacturing state of the art safety relief valves since 1986. Their patented Auto Seat Technology�has placed them at the forefront of today's relief valve industry. Their relief valves' patented Auto Seat Technology�will give you an extended seat life, which will allow your valve to open, close, seat and seal hundreds of times, saving you hundreds or thousands of dollars.

The following are PDF product guides:

Relief Valve Series

8100 Series

9100 Series Flanged

9100 Series Threaded

9100 Series Model 20

9500 Series Pilot Operated Valves