Prier Products 478-12-lf Frost Free Sillcock 1/2 X 12 Inch

Product Description

The PRIER PRODUCTS 478-12-lf is a lead free, frost free residential sillcock designed to prevent pipe freeze damage in cold climates. This wall hydrant features a 12-inch depth, which keeps the internal valve seat located inside the heated envelope of the structure, allowing water to drain back from the exposed portion after each use. It includes a built-in vacuum breaker to protect potable water supply lines from backflow contamination. The unit accepts either a 1/2-inch male pipe thread or a 1/2-inch sweat (solder) connection at the inlet, giving installers flexibility based on the existing plumbing configuration. This sillcock is intended for licensed plumbers working on residential outdoor water supply installations.

This sillcock is suited for residential exterior walls where outdoor hose bibb access is required year-round, or in climates where seasonal freezing is a risk. The 12-inch shank length accommodates walls with standard framing plus insulation. The vacuum breaker is integrated directly into the body, meeting code requirements for hose connection backflow protection in most jurisdictions. Compatible with 1/2-inch copper sweat or threaded iron pipe supply lines, making it a straightforward replacement or new-installation option in typical residential construction.

Key Features

• Lead free construction meets NSF and Safe Drinking Water Act requirements for potable water contact
• Frost free design seats the valve 12 inches inside the wall, draining the exposed shank when closed
• Integrated vacuum breaker provides built-in backflow protection at the hose connection
• Dual inlet option: 1/2-inch male pipe thread (MPT) or 1/2-inch sweat connection
• 1/2-inch x 12-inch nominal sizing for standard residential exterior wall depths

Compatibility

Designed as an OEM-style replacement or new-installation sillcock for residential exterior plumbing applications requiring a 1/2-inch lead free frost free wall hydrant with vacuum breaker.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and applicable local amendments. Shut off the main water supply and depressurize the line before cutting into existing supply piping. When using the sweat inlet, ensure the fitting is fully cleaned and fluxed before soldering; avoid applying heat to the valve body beyond the fitting area. Verify the shank pitches slightly downward toward the exterior to allow full gravity drainage of the standpipe when the valve is closed.

Technical Specifications

• Inlet Size: 1/2 inch
• Shank Length: 12 inches
• Connection Type: 1/2 inch Male Pipe Thread (MPT) or Sweat (Solder)
• Lead Free: Yes
• Vacuum Breaker: Included
• Item Weight: 31 pounds

Standard Information

• Brand: PRIER PRODUCTS
• Manufacturer Part Number: 478-12-lf