1-1/4" Check Valve, Stainless Steel

1-1/4" Stainless Steel Check Valve – Built for Reliable Backflow Prevention

Engineered for strength and longevity, this 1-1/4" stainless steel check valve is an ideal solution for preventing reverse flow in pressurized piping systems. Its corrosion-resistant construction and dependable sealing performance make it suitable for commercial, industrial, and high-demand residential plumbing applications.

This valve is designed for inline use with threaded connections, offering secure installation and robust system protection across a wide range of fluid handling scenarios. Built from stainless steel, it delivers excellent resistance to pitting, scaling, and chemical degradation, ensuring consistent operation even in demanding environments.

Contractor-Approved Features

• High-Grade Stainless Steel Body – Provides excellent corrosion resistance in potable water, HVAC, and industrial process systems.
• Threaded Ends (FNPT) – Allows for fast, secure connections to schedule 40 and 80 piping.
• Reliable Swing Mechanism – Prevents reverse flow and minimizes water hammer risk in high-pressure systems.
• Leak-Tight Seal – Engineered to maintain consistent performance under fluctuating pressure and temperature conditions.
• Low Maintenance Design – Reduces service intervals with minimal wear to internal components.

Technical Specifications

• Nominal Size: 1-1/4"
• Material: 304/316 Stainless Steel Body
• End Connection: Female NPT
• Operating Pressure: Rated for medium to high-pressure systems
• Orientation: Horizontal or vertical flow (with upward flow)

Installation Guidelines

While installation is straightforward for experienced contractors, proper thread sealing and alignment are essential to prevent leaks and ensure long-term performance. Apply approved thread sealant or PTFE tape and torque to manufacturer-recommended values. Ensure the valve is installed in the correct flow direction as indicated on the casting.

Recommended tools include:

• Adjustable or pipe wrench
• Pipe thread sealant or PTFE tape
• Torque wrench (optional for spec-compliant jobs)

Application Use

This stainless steel check valve is suitable for a range of fluid systems including:

• Potable water distribution
• Boiler feed lines
• Irrigation systems
• Compressed air networks
• General-purpose industrial flow control

Trusted by the Trade

Designed to meet the performance expectations of job sites and mechanical rooms, this check valve offers dependable sealing performance and minimal flow restriction. It’s a smart choice for contractors looking to install a rugged, code-compliant component that can stand up to years of service in real-world conditions.