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Installation, Operation & Maintenance Instructions for the
PRIER C-633/C-634 Commercial Wall Hydrant
Please leave this sheet for the property homeowner
OPERATION
Operation of the C-633/C-634 Commercial Wall Hydrant is a simple process. Water flows through the hydrant
after turning the loose key one full turn counter-clockwise to the "on" position. The hydrant will achieve maxi-
mum flow at 2 full turns. Turn off the hydrant by turning the loose key clockwise to the "off" position.
The hydrant will drain for a few moments. If the dripping persists after a few moments, tighten the key slightly
until the dripping stops. Be careful not to overtighten the hydrant.
The C-633/C-634 incorporates an integral atmospheric anti-siphon vacuum breaker that, in the rare occurrence
of a back siphonage, opens to the atmosphere preventing contamination of the water supply.
As well as an atmospheric vacuum breaker, the C-633/C-634 incorporates a vacuum breaker check valve in the
rare case that water is forced backwards into the valve.
This device shall not be subjected to more than 12 hours of continuous water pressure.
INTENDED FOR IRRIGATION USE AND OUTDOOR WATERING
MAINTENANCE
The C-633/C-634 Commercial Wall Hydrant leaves the factory fully air tested and operational. It is treated with
an FDA approved lubrication. The hydrant requires no scheduled maintenance to provide long life. If the stem is
removed, the bypass O-Ring needs to be replaced and lubricated with an FDA approved lubricant to avoid tearing.
4515 E. 139th Street Grandview, MO 64030 | (800) 362-9055 | PRIER.com
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