1″ & 1-1/2″ Inline Non-Return Valve

The 1″ & 1-1/2″ Inline Non-Return Valve is a simple in-line check valve designed to help maintain prime in a suction or discharge line. Its built for use with manual or electric pumps and installs directly in the plumbing run.

Key Features

• Inline non-return (check) valve design for installation in suction or discharge lines
• Helps maintain prime by preventing backflow when the pump is off
• Works with manual or electric pump systems
• Hose sizing supports 1″ and 1-1/2″ ID hose connections

Intended Use

• Bilge and utility pump suction/discharge plumbing
• Manual or electric pump installations that use in-line hose connections
• Marine plumbing where backflow prevention is needed in a suction or discharge line

Product Details

• SKU: 698-LV1215
• Valve type: Inline non-return (check) valve
• Application: In-line suction or discharge plumbing
• Use with: Manual or electric pumps
• Hose: 1″ and 1-1/2″ (ID hose)

Parts Desk Insights

Best Use Case: Use this inline check valve in a suction or discharge hose run to help prevent backflow and support priming when the pump is turned off.

Common Issues: If you experience poor priming or unintended draining, confirm the valve is oriented correctly in the flow direction per the installation diagram, and verify the hose size matches the 1″ / 1-1/2″ stepped connection youre using.

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