A wall hydrant is a valve that provides the convenience of water outside your building while requiring little winterizing. Ideally used where freezing is possible, wall hydrants protect against damage. The shut off occurs inside the building where there is no chance of freezing. They provide back flow protection in both commercial and residential applications.
The handle is turned outside but the valve that controls the flow of water is on the other side of the wall. This is done though a stem that opens and closes a valve inside the house. In the closed position, a bibb washer is forced against the faucet seat stopping the water.
To turn the valve on simply turn the handle and the stem will open the bibb washer allowing water to flow freely though the valve. To turn it off, simply turn the handle the other way and the stem will press the bibb washer against the seat preventing more water from flowing though the valve. Water that is in the valve will drain out leaving it empty.
Wall Hydrants need to be installed at a three to five degree incline where the inlet is higher than the outlet. This allows the valve to drain ensuring there is no water left in the valve to freeze.
VMS stocks wall hydrants with or without vacuum breakers and optional wall boxes to fit 1/2 and 3/4" water lines.  Some of the trusted names we carry are; Arrowhead, Josam, J.R. Smith, Woodford, Wade, Zurn and others.  In addition to the complete hydrant we also carry a line of O.E.M. repair parts from all manufacturers listed.