1″ & 1-1/8″ Inline Non-Return Valve

Keep water moving reliably by installing this 1″ & 1-1/8″ inline non-return (check) valve in your suction or discharge line to help maintain pump prime.

Key Features

• Inline non-return valve designed to be installed in-line
• Helps maintain prime in a suction or discharge line
• Works with manual or electric pumps

Intended Use

• Marine and utility pump suction/discharge plumbing (as applicable)
• Inline plumbing lines that benefit from backflow prevention and prime support
• Systems using manual or electric pumps

Product Details

• Title (as listed): 1″ & 1-1/8″ Inline Non-Return Valve
• SKU: 698-LV1218
• In-line installation for suction or discharge lines (non-return/check function)
• Hose/pipe sizing shown for this model: 1″ and 1-1/8″ (as described for LV1218/LV1218 family listings)
• Use with manual or electric pumps (as described in product info)
• Valve type: non-return (check) valve (as described)

Parts Desk Insights

Best Use Case: Ideal when you want a simple inline check/non-return valve solution to help reduce backflow and support pumping readiness in a suction/discharge line arrangement.

Common Issues: If the valve doesnt perform as expected, double-check hose/line size match (1″ vs 1-1/8″), confirm correct flow direction per the valve body markings/installation instructions, and ensure the mating hose/fittings are tight to prevent air leaks that can still defeat priming.

Related Products & Accessories

• Related Products & Accessories – Browse the Valves & Strainers / fittings-and-valves category for additional inline fittings, strainers, and compatible hose connection parts for your pump setup.