Conval Inc’s headquarters are located in Enfield, Connecticut. Conval was founded in 1967 and celebrates over 50 years of excellence.
The first CLAMPSEAL® valves were introduced to the market by Hamilton Standard in 1964. However, in the mid-1960’s, growing demand for the firm’s popular aerospace products forced Hamilton Standard to make the decision to abandon its industrial products. The rights to the CLAMPSEAL® valve reverted back to Mr. Siver. Since CLAMPSEAL® valves were born in Connecticut, Mr. Siver founded “Conval” in 1967. Today the valves are still manufactured in Connecticut, a state with a longstanding reputation for technological innovation and manufacturing excellence.