$313.41 $329.90
$16.49 off RRP of $329.90
Marine Holding Tank Fittings
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$559.55 $589.00
$29.45 off RRP of $589.00
Marine holding tank and pumpout fittings help connect, service and maintain onboard toilet waste systems where secure plumbing and access matter.
Selecting holding tank and pumpout fittings
Use this category when replacing fittings, planning a toilet system update or checking spares for a holding-tank installation.
For marine holding tank fittings purchases that depend on fitment or setup, the Washdown Pump Buying Guide explains pump flow, hose layout and deck-wash setup factors.
When comparing marine holding tank fittings, focus on tank layout, hose diameter, deck fitting location, venting, access for servicing and compatibility with existing plumbing. A careful match helps avoid ordering parts that look right online but do not suit the space, connection or operating conditions on the boat.
What to check before buying
- Confirm hose sizes and fitting types before ordering replacement parts.
- Plan pumpout and vent locations so they are accessible for normal use and maintenance.
- Check all components against the existing tank and toilet layout before installation.
Holding-tank plumbing needs careful measurement before purchase. Confirm the hose diameter, fitting thread style, pumpout location and deck-fitting clearance from the actual installation rather than assuming sizes from a previous purchase. Waste plumbing that has been modified or repaired before may use non-standard connections, so inspect the system thoroughly before ordering replacement parts. Use a qualified installer if the routing or connection path is unclear.
Related categories to check
FAQs
What should I check before buying holding tank fittings?
Check hose diameter, thread or connection type, tank layout, pumpout location and the material used in the existing system.
Can fittings be mixed between different toilet systems?
Sometimes, but only when sizes and connection types match. Waste-system fittings should be checked carefully before installation.
Why is venting important for holding tanks?
Venting helps the tank operate properly and can reduce pressure and odour issues, but the exact arrangement depends on the system design.
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