Knox Box FDC Lock 3" Male NH/NST Locking Cap Color_Green The LPD-250 is for use

The LPD-250 is for use with chemically treated (4 PPM or less chlorine/chloramine) potable water

The Piezo Assembly is meant to replace or repair the assembly on the HYDPRO160WCASE hydrant diffuser

By inserting the tail of the clamp into the tool

Global type "D" aluminum 4 inch female camlock (Cam & Groove) coupler to 3 inch female camlock (Cam & Groove)

Resistance to sea water (hose)

Knox Box FDC Lock 3" Male NH/NST Locking Cap Color_Green The LPD-250 is for useKnox FDC Locks protect fire department connections (FDCs), keeping pipes clean of debris to ensure the delivery of high pressure water flow to fire sprinkler systems. The Knox FDC Lock is available in 2 1 2" configuration and is operated with a Knox FDC wrench controlled by the Fire Department. Ensures ready and reliable connections to fire sprinkler systems Protects check valves from freezing in cold climate areas Eliminates costly services to back