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 (9) Parts Included (9) 1/4" NPT Flow Control Valve #05528 $112.02 1034 3/4-NPT Ball Valve w/Handle #28551 $63.58 1067 1-1/4" NPT x 4" Nipple #01720 $11.48 1014 Swivel connector, 1/4 npt #23829 $19.84 569 1/4" NPT CBM Gauge #11830 $43.27 1052 Clemco CPF-20 and CPF-80 Pressure Relief Valv… #01909 $29.77 713 1/4" Male NPT x 1/4" Tube Elbow #30336 $7.03 1523 Brass Plug, 1/4 inch NPT #01950 $6.89 335 1/4" NPT Brass Sreet 90 #02027 $13.78 1015