How do I size a bilge pump?

Bilge pumps are rated in gallons per hour (GPH), but actual output is lower once you account for hose length and vertical lift. Choose a pump rated well above your expected worst-case water intrusion, and consider a second, higher-capacity pump plus a float switch for automatic operation.

Can I use regular garden hose for my boat’s water system?

No. Marine plumbing uses purpose-built hose rated for the specific system — potable water, sanitation, and raw-water/bilge hoses differ in pressure rating, temperature resistance, and permeation. Using the wrong hose causes odors, leaks, or contamination.

Why is ventilation important on a boat?

Ventilation clears moisture that causes mildew and rot, and — critically on gasoline boats — clears fuel vapors from the engine compartment before starting. Blowers, cowl vents, and dorade boxes keep air moving through cabin and engine spaces for safety and comfort.

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Scandvik

Scandvik Replacement White Cup & Cap f/Recessed Shower

Manufacturer: ScandvikPart #: 12104PSKU: 100154

Nylon

$28.00● In stock

Add $71.00 more to qualify for free shipping.

Item #: 100154

Category: Accessories

● In stock — ships fast from US warehouses

Ships from US warehouses
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Description

Replacement White Cup & Cap for Recessed Shower This recessed cap and cup design is made with Dupont™ Zytel® Nylon Resin for greater strength and UV exposure resistance. A rubber gasket under the cap will keep water out when the cap is closed.

Features: Requires a 2-3/4 in. mounting hole.

Single white cap and cup NOTE: If you currently have a Scandvik recessed shower with a rubber cap, this latest design version will NOT fit your hole size. You will need to enlarge your current 2 1/4-in.

hole to a larger 2 3/4-in. *The "P" within the part number indicates retail packaging

Specifications

Brand	Scandvik
Part Number	12104P
EverTide SKU	100154
UPC	786142121048
Material	Nylon

Specifications are provided by the manufacturer. Confirm fitment for your application before ordering, or contact us and we'll help.

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Material	Nylon	Stainless Steel	—	—

Complete your setup

Scandvik

Scandvik Black & SS Recessed Transom Shower Handle/Hose - Vertical/Horizontal Mount - 6' Hose

$235.00

Returns & warranty

Returns are accepted within 30 dayson items that are unused and in their original packaging. Some items may be subject to a manufacturer restocking fee. Special-order items may not be eligible — if you're unsure, ask us before ordering.

Scandvik productscarry the manufacturer's standard warranty. For a warranty claim or a return authorization, see our full returns policy or contact us.

Marine Plumbing & Ventilation — frequently asked

How do I size a bilge pump?: Bilge pumps are rated in gallons per hour (GPH), but actual output is lower once you account for hose length and vertical lift. Choose a pump rated well above your expected worst-case water intrusion, and consider a second, higher-capacity pump plus a float switch for automatic operation.
Can I use regular garden hose for my boat’s water system?: No. Marine plumbing uses purpose-built hose rated for the specific system — potable water, sanitation, and raw-water/bilge hoses differ in pressure rating, temperature resistance, and permeation. Using the wrong hose causes odors, leaks, or contamination.
Why is ventilation important on a boat?: Ventilation clears moisture that causes mildew and rot, and — critically on gasoline boats — clears fuel vapors from the engine compartment before starting. Blowers, cowl vents, and dorade boxes keep air moving through cabin and engine spaces for safety and comfort.

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