The Scale Jail is a diffuser built specifically for fire sprinkler technicians and contractors when servicing a sprinkler system. This diffuser will prevent erosion to grass and landscaping when draining a system or conducting a 2" main drain flow test. The inlet has a 2-1/2" NH/NST female swivel so a standard fire hose can be connected for fire hydrant flushing as well. If conducting a standard 2" main drain test, add a 2-1/2" NH male x 2" female NPSH threaded adapter. Then connect a 2" NPSH fire hose from your 2" 45-degree discharge fitting to the adapter so you can safely discharge and diffuse the water flow. Features Connect to a 2" fire sprinkler main drain discharge while conducting annual or semi-annual testing If connected to a public water supply treated with chlorine, drop two tablets of ascorbic acid into the chamber to remove chlorine levels during testing Contain scale or debris while performing branch line and main flushing on sprinkler systems Containing the scale helps demonstrate the importance of maintaining the sprinkler system and adds credibility to the service being performed Can also be used to flush fire hydrants Dechlorinate water being flushed from fire hydrants (sodium sulfite tablets are recommended for this application)
