Welcome to Envirovalve! Operations started back in 2006 with the goal of leading the way in developing new valve technologies to assist end users in obtaining a reliable, tighter opening tolerance, tightly sealed valve with easy reset. With a research and development team of over 65 years of valve experience, we have been able to take a fresh look at old problems. By taking advantage of the latest in technology we have found that major improvements over many industry standard valves are achievable. One product we have introduced to the market is the AccuShear Pin Pressure Relief Device. This device addresses the need for a dependable large diameter pressure relief device. Though there are currently products available, our team has taken advantage of the latest technologies in machining, engineering, and quality control to provide a simple and robust all metal valve that can handle nearly any media, temperature, and pressure in the same standard design. The simple design uses fewer than 30 machined parts and provides class VI sealing when closed while still reliably opening at the set pressure within +/- 5%. We are patented, ASME, CRYO, Fire certified and have manufactured many production valves and are ready to quote the needs of your project. We take quality and customer service seriously and would love to prove our value to you and your customers!