475, 475V 2½â-3â Modification Overview Production of the 2½ - 3â sizes began in 1998. The lead free version (XL) was introduced in 2011. Single Access Cover Removal…

975, 975XL ¾â-2â Modification Overview Production of the original 975 began in 1990. This version had buna-n check discs and did not have replaceable check seats. Discontinued…

475, 475V, 475XL 4â-10â Modification Overview Production of the 4 - 10â sizes began in 1998 and is current. The lead free version (XL) was introduced in 2011. Single Access…

475, 475V 2½â-3â Modification Overview Production of the 2½ - 3â sizes began in 1998. The lead free version (XL) was introduced in 2011. Single Access Cover Removal…

375AST 21/2â-10â Modification Overview The stainless steel (ST) series was introduced in 2011. This version has a stainless steel body. ***(Parts do not interchange with…