Prier C-434 - User Manual

To Next Page

4515 E. 139th Street Grandview, MO 64030 | (800) 362-9055 | PRIER.com

Installation, Operation & Maintenance Instructions for the

PRIER C-434/C-534 Self-Draining Anti-Siphon Wall Hydrant

Please leave this sheet for the property homeowner

1. Determine location for installation of the PRIER Wall Hydrant. Be assured there is adequate work room in the interior

of the structure for securing the Wall Hydrant to the interior waterline. Bore a 1 1/8” diameter hole through the wall in

the desired position for installation of the PRIER C-434/534.

2. Always install PRIER C-434 or C-534 in the horizontal position and level. This will assure proper drainage of the

hydrant.

3. All Wall Hydrants require a slight downward pitch to assure complete draining once the valve is turned to the “off”

position. The PRIER C-434 has the proper drainage pitch built in to the hydrant’s angled backange. Simply install

the hydrant ush to a vertical wall and proper drainage pitch will be achieved.

4. Position the spout of the Wall Hydrant in the downward position. From the interior of the structure utilize the date

code on the copper pipe near the inlet. When the code is pointed down, the spout is oriented in the proper position on

the outside of the structure.

5. If planning to solder the connection (D or F Style Seats), to prevent seat damage from heat, be certain the Wall

Hydrant is in the fully open position. Overheating could cause internal damage to the stopper and factory solder joints.

6. Flush all foreign particles from the water line before connecting the Hydrant. Foreign particles may clog the vacuum

breaker / backow preventor causing it to fail. Connect the waterline to the Wall Hydrant as desired.

7. After the waterline connection is made, secure the Wall Hydrant to the structure with appropriate fasteners installed

through the screwholes.

INSTALLATION

Installation procedures may vary slightly depending on the Seat Option purchased and the installation inlet

options. PRIER Freezeless Wall Hydrants are available in the following seat options:

Inlet Style Inlet Specications Hole Size

D 1/2” MPT x 1/2” SWT 1” Hole

X 1/2” Crimp PEX 1” Hole

W 1/2” Wirsbo® PEX 1” Hole

T 3/4” MPT x 1/2” FPT 1 1/8” Hole

F 3/4” SWT 1 1/8” Hole

FX 3/4” Crimp PEX 1 1/8” Hole

Need help?

Do you have a question about the Prier C-434 and is the answer not in the manual?

The PRIER C-434/C-534 Self-Draining Anti-Siphon Wall Hydrant is an outdoor faucet designed for residential and commercial use, emphasizing freeze protection and backflow prevention. This device is engineered to provide a reliable water source outdoors while safeguarding the potable water system and preventing pipe bursts due to freezing temperatures, even if a hose is left attached.

Function Description:

The primary function of the PRIER C-434/C-534 hydrant is to deliver water outdoors. Its self-draining anti-siphon design is a key feature, ensuring that water drains from the hydrant after shutoff. This mechanism prevents water from remaining in the pipe section exposed to freezing temperatures, thereby protecting the plumbing from damage. The anti-siphon and backflow prevention capabilities are crucial for maintaining the safety and purity of the potable water supply by preventing contaminated water from flowing back into the main system. The hydrant's design incorporates a built-in drainage pitch, particularly in the C-434 model with its angled backflange, which facilitates complete draining when installed flush to a vertical wall.

Important Technical Specifications:

The hydrant is available with various inlet styles and specifications to accommodate different plumbing setups:

D Style: 1/2" MPT (Male Pipe Thread) x 1/2" SWT (Solder Water Tube)
X Style: 1/2" Crimp PEX
W Style: 1/2" Wirsbo® PEX
T Style: 3/4" MPT x 1/2" FPT (Female Pipe Thread)
F Style: 3/4" SWT
FX Style: 3/4" Crimp PEX

The required hole size for installation varies depending on the inlet style:

1" Hole: For D, X, and W style inlets.
1 1/8" Hole: For T, F, and FX style inlets.

The hydrant is factory air tested and operational upon shipment, indicating a high standard of quality control. It is also treated with an FDA-approved lubrication, ensuring smooth operation and longevity.

Usage Features:

Self-Draining Mechanism: The most significant usage feature is its self-draining capability. After the valve is turned to the "off" position, water drains from behind the packing nut through specifically designed drain holes. This process prevents water from freezing within the hydrant, even if a hose is inadvertently left connected.
Anti-Siphon and Backflow Prevention: The patented design meets or exceeds plumbing codes for anti-siphon and backflow prevention, safeguarding the potable water system from contamination.
Horizontal and Level Installation: For optimal performance and proper drainage, the hydrant must be installed in a horizontal and level position. The C-434 model specifically features an angled backflange to achieve the correct drainage pitch when installed flush against a vertical wall.
Spout Orientation: The spout of the wall hydrant should be positioned in the downward direction. An internal date code on the copper pipe near the inlet, when pointed down, indicates the correct spout orientation on the exterior.
Pre-Installation Flushing: It is recommended to flush all foreign particles from the water line before connecting the hydrant. This prevents potential clogging of the vacuum breaker/backflow preventer, which could lead to failure.
Open Position for Soldering: If soldering connections (D or F Style Seats), the hydrant must be in the fully open position. This precaution prevents heat damage to the internal stopper and factory solder joints.

Maintenance Features:

No Scheduled Maintenance: The PRIER C-434/C-534 hydrant is designed for long life and requires no scheduled maintenance under normal operating conditions.
Bypass O-Ring Replacement: If the stem of the hydrant is removed for any reason, the bypass O-Ring must be replaced. It is crucial to lubricate the new O-Ring with an FDA-approved lubricant to prevent tearing during reassembly. This is the only specific maintenance task mentioned, highlighting the low-maintenance design of the unit.
Factory Lubrication: The hydrant comes pre-lubricated with an FDA-approved lubricant, contributing to its initial smooth operation and extended lifespan without immediate user intervention.

In summary, the PRIER C-434/C-534 Self-Draining Anti-Siphon Wall Hydrant is a robust and intelligently designed outdoor faucet that prioritizes freeze protection, water safety, and ease of use with minimal maintenance requirements. Its various inlet options make it adaptable to diverse plumbing systems, while its self-draining feature provides peace of mind in cold climates.

Prier C-434 Specifications

General

Brand	Prier
Model	C-434
Category	Plumbing Product
Language	English