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The 8842 plunger is designed for the Simmons hydrant models 800, 4800, and 5800. The plunger will consist of a rubber outer body, and internal stainless steel threads. The plunger threads onto the bottom of the pump rod. The plunger will seat into the valve body that is located underground, and create a watertight seal preventing any water from leaking out of the hydrant. If your hydrant is leaking out of the spout, then the plunger may need to be replaced. The plunger can also fall out of adjustment. Below are the instructions to adjust the plunger! SHUT-OFF ADJUSTMENT: 1. Loosen the square-head set-screw. (If hydrant has a flow lock wheel, loosen it.) 2. Raise the handle to about 90 degrees or to where the handle is parallel to the ground. 3. Tighten the square- 90° head set-screw and close handle. 4. Open hydrant all the way to allow full flow of water. Then shut off flow and hold your finger lightly over the outlet (you should feel slight suction on your finger). If there is no suction or if hydrant leaks from hose adapter, repeat steps.
