Designed for pool, spa, irrigation, plumbing, waste water and agriculture. Stainless steel shaft prevents rust and corrosion. Ozone and chemical resistant Santoprene™ materials. Santoprene™ seals are integrated to the paddle to eliminate any chance of torn or punctured gaskets. Maximum working pressure 50 psi (through 2"). Solvent cememnt traps to catch excess glue. Every valve tested at double recommended working pressure. Valterra's patent pending triple 0-ring neck seal to ensure against any chance of shaft leakage.