59 Series AR10-A to AR40-A No. Description Material Part no. AR10-A AR20-A AR25-A AR30-A AR40-A AR40-06-A 3 Valve assembly Stainless steel, HNBR AR10P-090S AR22P-060AS AR32P-060AS AR42P-060AS 4 Diaphragm assembly Weatherable NBR AR10P-150AS Note) AR22P-150AS AR32P-150AS AR42P-150AS 5 Valve guide assembly Polyacetal 131329 AR22P-050AS AR32P-050AS AR42P-050AS No. Description Material Model Color 1 Body Zinc die-cast AR10-A White Aluminum die-cast AR20-A to AR40-A 2 Bonnet Polyacetal AR10-A to AR40-A White t q w e t e r IN OUT IN OUT q w r Construction AR10-A AR20-A to 40-06-A Component Parts Replacement Parts Note) The AR10-A is a piston type. Assembly of a piston and a seal (KSYP-13).