Non-Return & Check Valves

These valves prevent backflow and protect sensitive components from reverse pressure. Used in bilge systems, fuel lines, and freshwater circuits, they ensure one-way flow and system integrity. Marine-grade models are built to resist corrosion and clogging. An important part of any reliable plumbing setup.

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Hose Fittings & Accessories
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23 Products
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Check Valve, 1 & 1-1/2″ Plastic Inline Barb

Check Valve, 1 & 1-1/2″ Plastic Inline Barb

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Check Valve, 1-1/8″ Plastic Inline Barb

Check Valve, 1-1/8″ Plastic Inline Barb

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Check Valve, 3/4″ Plastic Inline Barb

Check Valve, 3/4″ Plastic Inline Barb

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Check Valve, Non-Return Plastic 1.5″ Ports

Check Valve, Non-Return Plastic 1.5″ Ports

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Check Valve, Non-Return Plastic 1″ Ports

Check Valve, Non-Return Plastic 1″ Ports

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Check Valve, Non-Return Plastic 3/4″ Ports

Check Valve, Non-Return Plastic 3/4″ Ports

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Check Valve, Non-Return Spring-Type Brass 1.25″

Check Valve, Non-Return Spring-Type Brass 1.25″

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Check Valve, Non-Return Spring-Type Brass 1.5″

Check Valve, Non-Return Spring-Type Brass 1.5″

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Check Valve, Non-Return Spring-Type Brass 1″ Non-Tapered Thread

Check Valve, Non-Return Spring-Type Brass 1″ Non-Tapered Thread

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Check Valve, Non-Return Spring-Type Brass 3/4″

Check Valve, Non-Return Spring-Type Brass 3/4″

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Check Valve, Plastic Inside-Tube-Set 1/2″

Check Valve, Plastic Inside-Tube-Set 1/2″

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Check Valve, Spring 1-1/2″ NPT Female Tapered Brass

Check Valve, Spring 1-1/2″ NPT Female Tapered Brass

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Check Valve, Spring 1-1/4″ NPT Female Tapered Brass

Check Valve, Spring 1-1/4″ NPT Female Tapered Brass

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Check Valve, Spring 1″ NPT Female Tapered Brass

Check Valve, Spring 1″ NPT Female Tapered Brass

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Check Valve, Spring 1/4″ NPT Female Tapered Brass

Check Valve, Spring 1/4″ NPT Female Tapered Brass

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Check Valve, Spring 3/4″ NPT Female Tapered Brass

Check Valve, Spring 3/4″ NPT Female Tapered Brass

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Check Valve, Spring 3/8″ NPT Female Tapered Brass

Check Valve, Spring 3/8″ NPT Female Tapered Brass

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Check Valve, Swing 1-1/2″ NPT Female Tapered Cast Bronze

Check Valve, Swing 1-1/2″ NPT Female Tapered Cast Bronze

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Check Valve, Swing 1-1/4″ NPT Female Tapered Cast Bronze

Check Valve, Swing 1-1/4″ NPT Female Tapered Cast Bronze

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Check Valve, Swing 1-1/4″ NPT Female Tapered Cast Bronze

Check Valve, Swing 1-1/4″ NPT Female Tapered Cast Bronze

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Check Valve, Swing 1″ NPT Female Tapered Cast Bronze

Check Valve, Swing 1″ NPT Female Tapered Cast Bronze

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Check Valve, Swing 1/2″ NPT Female Tapered Cast Bronze

Check Valve, Swing 1/2″ NPT Female Tapered Cast Bronze

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Check Valve, Swing 3/4″ NPT Female Tapered Cast Bronze

Check Valve, Swing 3/4″ NPT Female Tapered Cast Bronze

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*Prices shown are tax exempt Sint Maarten prices, store prices may vary as a result of shipping cost and taxes, please contact a store close to you for location prices