957RPDA, 957N RPDA, 957Z RPDA 21/2”-10”. Modification Overview Production began in 2002 and is current. Early versions used a ¾” Flomatic RPZE for.
C500, C500N, C500Z 21/2”-10”
M500, M500N, M500Z 21/2”-10”
C400, C400N, C400Z 21/2”-10”
757, 757N, 757Z (2½ ” – 10”) 757A (2½ ”- 6”)
