4" Wafer Check Valves

These valves are typically available in carbon steel, stainless steel, or brass, depending on the model and application. Carbon steel and stainless steel are common for oil and gas and industrial process environments, while brass may be selected for lighter-duty or corrosion-sensitive fluid handling applications.

Many 4" wafer check valves carry API Monogram certification and comply with applicable ANSI/ASME pressure and piping standards. Oil and gas pipeline applications may also require additional federal and state pipeline safety compliance, so it's important to confirm certification details for your specific application.

A standard wafer check valve typically uses a single disc to control flow, while a dual plate wafer check valve uses two spring-loaded plates that open and close independently. Dual plate designs are often more compact, lighter, and provide faster closure response, reducing water hammer in high-flow industrial systems.

4" wafer check valves are available with threaded, flanged, or socket weld end connections, depending on the model and manufacturer. The wafer-style design is installed between two pipe flanges using bolts, making flanged connections the most common configuration for this valve type.

Pressure ratings vary by model and application, so it's important to match the valve rating to your system's maximum operating pressure, temperature, and the media being handled. Consulting technical specifications and speaking with a supplier can help ensure the valve meets ANSI/ASME and API requirements for your specific use case.

These valves are widely used in oil and gas pipeline systems, water and fluid management, chemical processing, industrial manufacturing lines, infrastructure and construction projects, and hydraulic or instrumentation systems, wherever preventing backflow is critical to system integrity and safety.