RV Plumbing

What RV plumbing parts does this collection include?

The RV Plumbing collection covers 541 parts across three systems: fresh water plumbing (PEX fittings, water pump components, faucets, hose connections), black water plumbing (waste valves, sewer hose fittings, tank flush components, gate seals), and black water tank chemicals (drop-ins, liquid treatments, toilet tablets). If you are also prepping for cold weather, pair these parts with a kit from our RV Winterizing Kits collection.

Which RV toilet tablets and tank chemicals actually control odor?

For odor control, enzyme and bio-based drop-ins generally outperform formaldehyde chemicals in modern holding tanks because they break down waste and tissue without killing the bacteria your tank needs to function. Look for products rated for the gallon capacity of your black tank and dose according to fill volume, not just tank size. Drop-in tablets are the simplest format; liquids dose more precisely if you partially empty between trips.

How do I clean the RV toilet flush wand and tube?

Run a tank-cleaning wand or flush king down through the toilet bowl with the gate valve open and the black tank empty, then back-flush with fresh water for several minutes until the discharge runs clear. For mineral buildup in the flush tube itself, a vinegar soak followed by a sewer-safe enzyme cleaner clears most residue. Confirm your toilet model number before ordering replacement wands, flush balls, or vacuum breakers, fitment varies between Dometic, Thetford, and Sealand units.

Do you carry Flush King and other tank rinser fittings?

Yes, the collection includes back-flush fittings, gate valve replacements, sewer hose adapters, and tank rinsing components compatible with standard 3-inch RV waste outlets. For related electrical accessories that often get replaced at the same time as plumbing service, see our RV Plug Adapters and RV Electronics collections.

How do I confirm the right fresh water fitting size?

Most RV fresh water systems use 1/2-inch PEX as the standard interior line size, with 3/8-inch runs to specific fixtures and 3/4-inch on inlet hose threads. Measure the outside diameter of your existing PEX tubing and identify the connection type (crimp, SharkBite-style push-to-connect, or QEST) before ordering. If you cannot match a fitting from the photos and specs, text or call 817-984-1852 with your existing part in hand and we will confirm the replacement.

What ships free in the RV Plumbing collection?

Orders over $100 ship free. Most plumbing fittings, chemicals, and small toilet parts ship via standard ground in 1-3 business days. Larger items like full RV toilets and holding tank assemblies may ship via freight, the product page will list the freight cost inline before checkout.