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RHS Boating & Marine

38mm White Thru-Hull Scupper with Flap Valve for Marine Plumbing - RWB1430 RWB1430

$20.85 each
Brand: RHS Boating & Marine – Boat Parts, Marine Accessories & Boating Supplies

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38mm White Thru-Hull Scupper with Flap Valve for Marine Plumbing - RWB1430

38mm White Thru-Hull Scupper with Flap Valve. This scupper component is intended for a suitable boat drainage arrangement. Its flap allows water to leave through the intended outlet and closes against water entering through that opening. The selected model's material, dimensions and supplied parts are listed below so the physical installation can be checked before ordering. Scuppers need to be considered as part of the boat's drainage layout: outlet position, mounting surface and the relationship to the waterline are important alongside the size of the fitting itself.

Choosing and using this product

Inspect the existing drain or planned mounting position before choosing a replacement. Measure the available space and confirm whether the job needs a surface-mounted scupper valve or a complete through-hull arrangement. Check the mounting face and ensure the flap will have room to move without interference from nearby hardware. Where a hose connection is provided, match the hose bore and allow a clear route without kinks or unsupported loads. Follow the boat's installation guidance for sealing and fastening the component, and obtain marine installation advice if the outlet position or hull penetration is uncertain. After fitting, test that water can leave as intended and inspect the mounting and hose connections for leakage. Check the flap for debris or distortion rather than assuming a closed-looking flap is sealing correctly. Keep the outlet and flap accessible for cleaning. A scupper is a drainage component, not a substitute for checking the boat's overall water-management arrangements. Inspect it before use and during routine maintenance, especially after the boat has collected leaves, sand or other debris around the drain. Recheck the attachment and flap movement after any impact or nearby repair.

Product details

  • 38mm (1 1/2 inch) hose; maximum hull thickness 75mm; overall length 157mm; cut-out 45mm.
  • White polypropylene through-hull with scupper valve and stainless fastening screws.
  • Product code: RWB1430.