Coilhose Pneumatics SV803 Inline Check Valve 3/8 Inch

Product Description

The COILHOSE PNEUMATICS SV803 is an inline check valve designed for 3/8 inch pipe applications with female NPT connections on both ends. This safety excess flow check valve allows flow in one direction while preventing backflow, protecting downstream equipment and maintaining system pressure integrity. The body is constructed from aluminum, keeping weight low while providing adequate durability for pneumatic service. It is typically installed by licensed pipefitters, HVAC technicians, or pneumatic system specialists working on compressed air lines, pneumatic tool circuits, or similar fluid-handling systems.

The SV803 is suited for inline pneumatic plumbing where backflow prevention is required. Its FNPT x FNPT end connections make it compatible with standard threaded pipe assemblies. The safety excess flow function provides an added layer of protection in compressed air and pneumatic distribution systems, making it appropriate for light industrial, commercial, and shop environments where maintaining unidirectional flow is critical to system safety and performance.

Key Features

• Inline check valve design allows flow in one direction and prevents backflow
• Safety excess flow check valve function protects downstream components
• FNPT x FNPT end connections for straightforward threaded pipe assembly
• Aluminum body construction reduces overall assembly weight
• 3/8 inch pipe size suits common pneumatic distribution line sizes

Compatibility

Designed as an OEM-style inline check valve replacement for 3/8 inch FNPT threaded pneumatic piping systems.

Installation Notes

Installation should be performed by a qualified pipefitter or pneumatic systems technician. Depressurize the entire pneumatic circuit fully before removing any existing valve or fitting. Apply appropriate thread sealant to NPT threads per the system fluid and pressure requirements. Verify flow direction markings on the valve body before final assembly to ensure correct orientation in the line.