AR303 and AR403 O-Ring Kit Manufacturer_Gregson-Clark Part # AR43279 is the

Part # AR43279 is the diaphragm rebuild kit for the AR 252 diaphragm pump

Hose Roller Guides: Roller guides can be easily added to the sprayer to assist in pay-out and rewinding of hose

Glass filled polypropylene (black) valve body

The 1" bolted manifold valve is a full port valve rated for 150 PSI and features 1" manifold fittings on each end with a 1" opening thru ball

AR303 and AR403 O-Ring Kit Manufacturer_Gregson-Clark Part # AR43279 is theAR2389 is the replacement O ring kit for the AR303 and AR403 diaphragm pumps. This kit is typically used when rebuilding the pump at the end of the season. Included in the kit are the main 30 O rings found on the AR303 403 pumps. AR2389 replaces 9910 Kit2389 and is compatible with Hypro D303 & D403 pumps.