Prier 400 Diamond Series Guide

4515 E. 139th Street Grandview, MO 64030 | [phone] | PRIER.com
Installation, Operation & Maintenance Instructions for the
PRIER Mansfield Style 400 Diamond Series Wall Hydrant
Please leave this sheet for the property homeowner
Thank you for purchasing the PRIER Mansfield Style 400 Diamond SeriesWall Hydrant.Your 400
Diamond SeriesWall Hydrant will provide you years of dependable service with little or no maintenance.
INSTALLATION
Installation procedures may vary slightly depending on the seat option purchased and the installation inlet options. PRIER
Mansfield Style 400 Series wall hydrants are available with the following inlet options:
Inlet Style Inlet Specications Hole Size
478-D 1/2” MPT x 1/2” SWT 1” Hole
479-T 3/4” MPT x 1/2” FPT 1 1/8” Hole
480-C 1/2” CPVC 1” Hole
481-S 1/2” SWT x 3/4” Push-On 1” Hole
482-F 3/4” SWT 1 1/8” Hole
483-G 1/2” SharkBite Push-Fit 1” Hole
484-Y 1/2” Press-Fit 1” Hole
490-X 1/2” Crimp PEX 1” Hole
491-W 1/2” Wirsbo® PEX 1” Hole
492-FX 3/4” Crimp PEX 1 1/8” Hole
493-FW 3/4” Wirsbo® PEX 1 1/8” Hole
1. Determine the location for the installation of the hydrant.The valve must be installed into a heated area of the structure
that will not drop below freezing. Ensure there is adequate work room in the interior of the structure for securing
the hydrant to the plumbing piping. Bore the hole size listed above through the wall in the desired position for the
installation.
2. All freezeless wall hydrants require a slight downward pitch to aid the draining process of the hydrant once the product
is turned to the “off” position.
3. Position the spout of the hydrant in the downward position. From the interior of the structure, utilize the date code on
the copper pipe near the inlet.When the date code is pointed down, the spout is oriented in the proper position on the
outside of the structure.
4. Connect the water supply piping to the freezeless wall hydrant as desired.
5. If you are planning to solder the connection (478, 481, or 482 style seats), be certain the hydrant is in the fully open
position to prevent seat damage from the heat. If you are installing using a threaded adapter, hand tighten until valve is
snug, then orient spout in the proper direction. Use a strap wrench if necessary. DO NOT OVERTIGHTEN.

4515 E. 139th Street Grandview, MO 64030 | [phone] | PRIER.com
Installation, Operation & Maintenance Instructions for the
PRIER Mansfield Style 400 Diamond Series Wall Hydrant
Please leave this sheet for the property homeowner
OPERATION
MAINTENANCE
Operation of the PRIER Mansfield Style 400 Diamond SeriesWall Hydrant is a simple process.Water flows through the
hydrant after turning the handle counter-clockwise to the “on” position.Turn off the hydrant by turning the handle clockwise
to the “off” position.
The hydrant will drain for a few moments. If the dripping persists after a few moments, tighten the handle slightly until the
dripping stops. Be careful not to overtighten the hydrant.
The 400 Series 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 400 Series incorporates a backflow preventer that operates as a check valve in
the rare case that water is forced backwards into the valve.The backflow preventer has been tested to 125 PSI pressure.
ALWAYS REMOVE HOSE DURING FREEZING TEMPERATURES
INTENDED FOR IRRIGATION USE AND OUTDOOR WATERING
The PRIER Mansfield Style 400 Diamond SeriesWall 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.
6. For the 483 1/2” push-fit style inlet: (PEX, copper or CPVC)
- Square cut the supply line and deburr the edges before inserting into valve fitting to
prevent damage to the o-ring inside the valve.
- Make sure the outside surface of the pipe/tube is clean and free from scratches,
dents, dirt, oils or other imperfections.
- Measure 15/16” from the end of the pipe and mark.
- Push the valve onto piping until it is flush with the mark.
- Pull on the hydrant to make sure it is secure.
7. With a closed-end hose attached to the hydrant outlet, test the installation for leakage.
8. After the water supply connection is made, secure the hydrant to the structure using
appropriate screws through the two mounting holes on the casted back flange.
(Push)
INSTALLATION