Inlet Drain Closure Valves

Inlet Drain Closure Valves

The FlapstopperTM inlet valves are modular designed stainless steel automated water pollution containment systems for remote and local activation via mains or solar power.


Our control kiosks allow clients to integrate their FlapstopperTM valves with existing BMS, fire alarm systems, oil interceptors, and more.


The FlapstopperTM inlet valve range is retrofittable to existing chamber benching, thanks to it’s D-shaped base profile.

This type of drain closure valve allows for rapid installation, ensured sealing around the drain invert and comes in sizes retrofittable to inverts from 100mm to 600mm.

Product Benefits

  • UK made from stainless steel 304 (316 on request)

  • Fits drain inverts from 100mm to 600mm diameter

  • Mains or solar power options

  • Stops the flow in under 5 seconds

  • Automatic drain seal using compressed air

  • Local and/or remote activation for larger sites

  • Simultaneous valve closure (up to 3) per control panel

  • Rapid installation in under 1hr per valve

  • Cost effective solution to upgrade existing drainage with minimal disruption and civils work required

  • Accepted product by the EA & CIRIA for PPG18 / c736 compliance

  • Surface water pollution & firewater spill prevention

Inlet Drain Closure Valve Gallery

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    Head Office

    The Innovation Farm

    Sawbridgeworth Road

    Little Hallingbury

    Bishop’s Stortford


    CM22 7QU

    Contact us

    01279 600440

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