1" PVC In-Line Spring Check Valve, Solvent Weld

1" S-611 PVC Check Valve – Non-Slam, High-Performance Flow Control

The 1" S-611 PVC check valve is engineered for dependable, quiet operation in pressurized water systems. Designed with a fully guided poppet and soft-seated seal, this valve offers a non-slam solution to prevent reverse flow, making it ideal for professional installations requiring long-term reliability.

Built for Demanding Applications

Constructed from high-grade Schedule 40 PVC, this valve is compatible with both Schedule 40 and Schedule 80 piping systems. Its low-pressure drop and corrosion-resistant design make it well-suited for potable water, irrigation, pool systems, and general plumbing applications—delivering efficient performance under continuous use.

Product Highlights

• Material: Injection-molded PVC body using virgin resin for maximum integrity
• Seal Type: Soft-seated EPDM for silent, reliable sealing
• Flow Control: Guided poppet design minimizes chatter and water hammer
• Orientation: Can be installed in both vertical and horizontal positions
• Working Pressure: Rated to 150 PSI at 73°F

Dimensions

• Nominal Size: 1 inch
• Length (Inlet to Outlet): 5.25 inches
• Body Width: 2.88 inches
• Temperature Range: Up to 140°F

Installation and Compliance

Professional installation is recommended to ensure adherence to plumbing codes and optimal system performance. Solvent weld ends are designed for easy bonding to standard PVC pipe. Note: this valve is not rated for compressed air or gas applications and should be used only in liquid service environments.

Contractor-Focused Benefits

• Lead-Free Compliance: Safe for use in potable water systems
• Quiet, Non-Slam Operation: Reduces noise and hydraulic shock in pressurized lines
• Low Maintenance: Internal components are corrosion-resistant and built to endure extended use
• Made in the USA: Manufactured domestically for consistent quality and supply chain support

Dependable Backflow Protection for Water Systems

From irrigation control to potable water systems, the 1" S-611 PVC check valve delivers professional-grade backflow prevention. Its design balances ease of installation with top-tier hydraulic performance, making it a preferred choice for plumbing contractors across commercial and residential projects.