1 1/2" Adjustable Spring Check Valve, PVC, FPT X FPT

1 1/2" Adjustable Spring Check Valve – Precision Flow Control with Proven Backflow Protection

Engineered for dependable backflow prevention and consistent system operation, this 1 1/2" PVC adjustable spring check valve is a reliable choice for controlling directional flow in a range of liquid handling applications. The adjustable internal spring allows field tuning of the cracking pressure, making it ideal for systems where flow customization is essential.

Built for Demanding Plumbing Systems

Designed with FPT x FPT connections and molded from corrosion-resistant PVC, this check valve performs reliably in both residential and light commercial water systems. Commonly used in irrigation, sump pump discharge lines, and drainage applications, it prevents reverse flow while maintaining operational efficiency.

Product Highlights

• Adjustable Spring Tension – Fine-tune the opening pressure to optimize system performance and reduce water hammer
• Schedule 40 PVC Body – Lightweight and durable, offering excellent resistance to corrosion and chemical exposure
• Female Threaded Ends – Standard FPT x FPT configuration for easy integration into threaded plumbing assemblies
• Vertical or Horizontal Installation – Designed for flexibility in system layout
• Internal Components – Spring and sealing components made from corrosion-resistant materials to extend service life

Specifications

• Valve Size: 1 1/2"
• Material: PVC body with stainless steel spring
• Connection: FPT x FPT
• Operating Pressure: Up to 150 PSI (varies by installation)
• Service Temperature: 40°F to 140°F (4°C to 60°C)

Installation Notes

For best results, install in the correct flow direction indicated on the valve body. The adjustable spring feature should be calibrated based on system flow rate and pressure characteristics. This product is intended for non-potable applications unless certified otherwise.

Professional Considerations

For Contractors: The valve's adjustability allows for on-site system optimization, particularly in applications where standard check valves cause flow disruption or premature closure. Its low-maintenance design and durable construction help reduce callbacks.

For Technically Skilled End Users: While installation is straightforward, fine-tuning spring tension should be approached with an understanding of system flow dynamics. Threaded connections require proper sealing methods to avoid leaks.

Key Advantages

• Backflow Prevention – Helps protect pumps, tanks, and piping systems from reverse flow and contamination
• Serviceable Design – Access to internal components allows adjustment and maintenance without full valve replacement
• Cost-Efficient – Offers long service life and reliable performance at an accessible price point
• Widely Compatible – Works with standard Schedule 40 threaded piping systems in water movement or treatment applications

Dependable Control for Your Fluid System

This 1 1/2" PVC adjustable spring check valve combines flexibility with performance, making it a go-to solution for plumbing professionals who demand precision and reliability in system flow control.