Mercer White


To safely provide the highest quality safety relief valve, featuring our patented “Auto Seat Technology”®, at a competitive price, delivered on time, and serviced by our trained professionals.

We will consistently meet our customer’s expectations, continuously improve our products and processes, and meet all compliance requirements for our product.

Why Choose Mercer?


Mercer Valve Company provides a Made in the USA manufactured high-quality safety relief valve. Our 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.

Whether it is our deliveries, valve shop or mobile repair, at Mercer we will continue to strive to satisfy our customers with exemplary service.

Our products are proudly made in the USA.

Recent News

Employment Opportunity



Extraordinary work begins with extra ordinary people. At Mercer, we employ the best people to push boundaries, develop new ideas and take us further.

Project Elf



For five years now Mercer Valve has sponsored 50 of the 900+ kids that are in Oklahoma’s state care where our corporate office is located! From start to finish, this is easily a favorited nonprofit project by our employees. It’s especially neat to see volunteers from all parts of our community come together and “play… Read more »




We had the privilege of attending ADIPEC 2014 with our representatives of Dubai, Caltrols Middle East FZCO. Caltrols received a lot of traffic to their booth and provided many new leads. We look forward to following up with the new and existing customers that we saw during the show!