2. The hydrant drips after shutoff

Since a Freezeless Hydrant actually shuts off inside the heated portion of the structure, the water inside the hydrant will drain out after shutoff.   The shutoff point could be any distance from 4" to 24" or more inside the structure.  This installation should also be pitched to allow the water to easily drain out of the hydrant.  The hydrant may drip for up to 60 seconds after shutoff.   If the water continues to drip after that time, you most likely need to replace the bibb washer.

To determine what bibb washer you require, you need to determine the type of stem in the hydrant.  That can be accomplished in a few different manners.

   1.   Date of Installation:

Before 1972 Prier utilized a 1/4 L Beveled Bibb Washer for our Freezeless Hydrants.  The appropriate Part Number for that item is C-135KT-802.

After 1972 Prier used a OO Beveled Bibb Washer for this style of Freezeless Hydrant. That Part Number is C-134KT-802.

   2.   Determine Type of Stem inside the Freezeless Hydrant

To determine the proper replacement bibb washer, you need to determine the following:

a. Length of the stem, from brass tip to brass tip. Do not include the rubber bibb washer in this measurement.

b. The "A" Dimension as shown on the picture below. This "A" Dimension will either be 1/2" or 9/16". A caliper may be necessary to determine this dimension.

c. Using the acquired dimensions, determine which bibb washer is required from the chart below:

B, C & D Style Stems use the 1/4L Beveled Bibb Washer, Prier item number C-135KT-802

E Style Stems require the "OO" Beveled Bibb Washers, Prier item number C-134KT-802.