HPC-X WATERAX HAND PUMP WITH HOSE FOR OT-4NX screw and is a popular choice

and is a popular choice for slip-on units

MARK-3® Watson Edition Specification Document

MARK-3® Watson Edition USDA Notice of Qualification

Data-sheet-VERSAX-Wrap-Around-Frame

Maximum flow

HPC-X WATERAX HAND PUMP WITH HOSE FOR OT-4NX screw and is a popular choiceThe HPC X brass hand pump design features a forward grooved hand grip and a rear pistol grip that makes operating the hand pump easier on the wrist and requires less effort than standard hand pumps. It is easy to maintain and can be repaired in field. It includes a locking mechanism to prevent drag, extension by gravity, and water loss through dripping. The combination tip allows for quick change from spray to straight stream without any tools.