Prier Frost-Free Outdoor Hydrant P-164D04 — 4-Inch Quarter-Turn Anti-Siphon Brass

The Prier P-164D04 is a 4-inch, quarter-turn frost-free outdoor hydrant with an anti-siphon vacuum breaker built from heavy cast brass for long-lasting residential water service.

Designed for exterior hose bib installations that tie into the heated portion of a building, the Prier P-164D04 combines rugged materials and a proven stem design to resist leaks, rattling and freezing. Built with copper tubing, stainless and aluminum accessories, and heavy brass components, this hydrant is optimized for residential applications where durability and reliable shutoff matter.

How does this hydrant prevent freezing and interior water damage?

The Prier P-164D04 is a frost-free model intended to be soldered into the heated area of a structure so the valve seat is isolated from outdoor temperatures. When correctly installed with the inlet in the warm zone, remaining water drains away from the valve seat after shutoff, reducing freeze risk. The anti-siphon vacuum breaker also protects against backflow into your potable supply.

• 4-inch overall length positions the valve seat inside heated space when installed correctly
• Frost-free design minimizes trapped water at the seat after shutoff
• Built-in anti-siphon vacuum breaker prevents backflow contamination

What materials and construction make this model durable?

Prier builds these residential hydrants from heavy cast brass patterns with copper tubing and stainless- and aluminum-based hardware, giving corrosion resistance and mechanical strength. The stem has heavy brass ends and uses ACME threads at both the handle and the seat for secure engagement and long life. That dual anchoring reduces stem play and eliminates common sources of noise or premature wear.

• Heavy cast brass body resists mechanical wear and corrosion
• Copper tubing and stainless/aluminum accessories for durable internals
• ACME-threaded stem secured at handle and seat for stable operation

How flexible is the Prier P-164D04 for different installations?

Prier offers a wide selection of residential hydrant models, inlet sizes, and lengths, and the P-164D04 is part of that modular lineup. The stem design allows manufacture to virtually any valve length without the typical seating or rattling issues, so it's easy to match this hydrant to the wall thickness or installation depth you need. Standard inlet options and custom finishes are available through Prier when ordering.

• Standard 1/2" MIP x 1/2" SWT inlet configuration for common plumbing connections
• Available in multiple lengths and inlet styles across Prier’s residential series
• Customization options for non-standard installation depths or plating finishes

What should I expect during installation and maintenance?

Installation is conventional for frost-free wall hydrants: locate and solder the inlet into the heated plumbing zone and secure the body through the exterior wall. The quarter-turn operation is user-friendly and reduces wear compared with multiple-turn valves. Routine maintenance is typically limited to occasional inspection for debris and winter checks to confirm the inlet remains in the heated space.

• Solder or sweat 1/2" SWT inlet to building plumbing in heated area
• Quarter-turn handle provides quick shutoff and reduced wear
• Periodic inspections recommended; no special maintenance required for standard use

Who is this for: The Prier P-164D04 is intended for homeowners, contractors and property managers who need a reliable, frost-free outdoor hydrant that ties into the heated portion of a building. It suits installations where long-life materials, anti-siphon protection and a stable, low-noise stem design are priorities—especially for residential exterior hose bibs, irrigation hookups and seasonal outdoor water use.