Prier 8-Inch Frost-Free Outdoor Hydrant — Quarter-Turn Anti-Siphon Cast Brass

Designed and manufactured in the United States, this Prier outdoor hydrant combines a frost-free design with anti-siphon protection and rugged materials to protect your exterior water line from freezing, backflow, and corrosion. Its quarter-turn operation and reinforced stem construction reduce wear and provide smooth performance over many seasons. Prier’s attention to material choice and threaded stem mounting means fewer operational noises and a more reliable connection across different installation depths.

How does this hydrant prevent freezing and protect my plumbing?

The P-164D08 uses a frost-free construction that locates the shutoff point below the frost line, minimizing trapped water in exterior piping. Anti-siphon technology prevents contaminated water from being drawn back into your potable supply. Together, these features reduce the chance of burst lines and maintain water quality at the outdoor outlet.

• Frost-free valve placement to limit exposed water in the spout
• Built-in anti-siphon to block backflow into home plumbing
• Quarter-turn operation for quick shutoff and minimal residual water

What materials and construction choices make this hydrant durable?

Prier builds the P-164D08 from heavy cast brass patterns with copper tubing and stainless steel and aluminum accessories for corrosion resistance and longevity. The stem features heavy brass ends and long-wearing ACME threads, and it is anchored at both the handle and the seat to eliminate stem rattle and reduce noise under flow. These design choices mean the valve withstands seasonal wear and can be made in multiple lengths without compromise.

• Heavy cast brass body for strength and corrosion resistance
• Copper tubing with stainless steel and aluminum components where applicable
• Dual-seat stem secured with ACME threads to prevent rattling

Is this hydrant easy to install and customize for different homes?

Prier offers a range of inlet options and multiple standard lengths, and the P-164D08 can be produced in custom lengths or plating finishes to suit specific installations. The quarter-turn mechanism simplifies operation during installation and reduces on-site adjustments. Whether you need a particular inlet size or a longer reach through exterior walls, this model accommodates common residential needs.

• Available with several standard inlet configurations for plumbing compatibility
• Twelve standard lengths with custom-length options on request
• Options for different plating finishes to match exterior fixtures

Why choose the Prier P-164D08 over other exterior sillcocks?

This model emphasizes build quality and tested components: robust brass patterns, secure dual-mounted stems, and proven anti-siphon frost-free operation. Prier’s residential hydrants are engineered to reduce maintenance issues such as stem seat wear, noise, and malfunction under flow, making them a solid long-term choice for exterior water access. The U.S. manufacturing adds traceability and consistent quality control.

• Manufactured in the United States for consistent quality
• Engineered to minimize stem wear and operational noise
• Specifically designed for residential exterior plumbing durability

Who is this for: The Prier P-164D08 is intended for homeowners, builders, and plumbers who need a reliable, frost-resistant outdoor hydrant with anti-siphon protection. It suits residences requiring durable exterior water outlets, installations that demand specific inlet lengths or finishes, and anyone who prefers professionally made U.S.-manufactured plumbing components for dependable seasonal performance.