Description Manuals Videos Articles Popular Accessories Clemco Part #28557 1-1/4" National Pipe Thread Check Valve for WetBlast Flex Base Unit Injector. WetBlast Flex Base Unit Injector Item # 27 Dustless (Wet) Sandblasting Benefits Slurry Blast, Venturi Blast, and Vapor Blasting Is Dustless Blasting Really Dustless? Related Parts (5) Parts Included (5) Swivel connector, 1/4 npt #23829 $18.79 569 1-1/4" NPT x 4" Nipple #01720 $10.91 1014 1/4" NPT Flow Control Valve #05528 $102.94 1034 1/4" NPT CBM Gauge #11830 $41.06 1052 3/4-NPT Ball Valve w/Handle #28551 $60.55 1067 Customers Also Viewed Wetblast FLEX Pump Module and Water Tank 1-1/2"-NPSM Entry Injector Body #28573 $433.61 3/8" ID x 52ft Hydraulic Hose #28559 $277.70