RV Drain Repair, Odor Control & Dump System Upgrades
Slow RV drains, gurgling sinks, shower puddles, or sewer odors mean the drain path—traps, vents, valves, or hoses—needs attention. Road vibration loosens slip nuts, hair and soap build up, and misrouted vents create vacuum that pulls water from traps.
Traveling RV Technicians (TRVT) provides mobile RV drain diagnostics, leak repairs, trap and vent fixes, valve replacement, macerator installs, tank flushing, and dump-station setup. We correct slope, seal joints, and tune venting so gray water and black water flow out—without smells coming back in.
Fast Diagnosis: What’s Really Causing the Slow Drain?
We start with the basics and prove the cause:
Check basket strainers, tailpieces, and slip-joint washers for seeping or misalignment.
Verify trap water level and look for siphoning when other fixtures drain.
Confirm slope (¼″ per foot typical) on RV sink drain runs so water carries solids.
Inspect shower pans for hair mats at the strainer and low P-trap water.
Test air admittance valves (AAVs) and roof vents for free air.
You get a simple report: clog, venting issue, bad trap, or valve/tank problem—and the fix.
Traps That Work in Tight Spaces (P-trap vs HepvO)
Standard P-traps seal odors, but space is tight in RV cabinets and pans. We install:
Correct-height P-traps with cleanouts and new slip nuts/washers.
HepvO® waterless traps where height is limited (bunks, lavs, washer drains). They don’t dry out in storage and resist slosh-out while driving.
Anti-siphon vents where needed so traps hold water.
Result: no sewer smell from dry or siphoned traps.
Sinks & Showers: Leaks, Level & Flow
Daily-use fixtures need correct geometry:
Re-bed basket strainers with plumber’s putty or gaskets; tighten tailpieces square.
Reset shower drains with new gaskets; shim pans so water pitches to the grate.
Add hair catchers and serviceable strainers; replace cracked ABS elbows.
Correct sagging horizontal runs that pool and smell.
Clean, pitched drains move water and rinse themselves.
Gray & Black Tanks: Valves, Seals & Cable Adjustments
Sticky dump? We service the tank end:
Replace gate valves (Valterra/Bristol), seals, and bent rods; re-lube and align.
Adjust or replace stretched cable-actuated valves so they fully open/close.
Add secondary termination valves at the outlet when manifolds drip between uses.
Confirm tank-to-valve geometry so paper/solids don’t hang at the knife gate.
Tight valves = no seep, no surprise mess at hookup.
Tank Flushing, Rinsing & Sensor Accuracy
Reading “⅔ full” forever? We:
Install/repair black tank flush sprayers and teach proper rinse steps.
Backflush via clear elbows to verify clean effluent.
Upgrade to SeeLevel external sensors for accurate readings without in-tank probes.
Recommend enzyme/biological treatments (never caustic drain openers) to keep sludge soft.
Clean tanks drain faster and stink less.
Hoses, Fittings & Slope (Dump Station Success)
The right hose setup prevents spills:
Heavy-wall sewer hoses with bayonet or cam-lock fittings, intact O-rings, and locking caps.
Rigid hose supports for consistent slope from outlet to sewer.
Clear elbows to confirm flow, and shutoff caps for storage.
Correct adapters for campground threads and residential cleanouts.
We label caps and fittings so setup is quick and drip-free.
Macerators & Upgrades for Tough Sites
When gravity won’t cooperate:
Install and service macerator pumps (Thetford Sani-Con, Flojet) with fused 12-V wiring and proper hose routing.
Add quick-disconnects and dedicated switches; protect with GFCI on AC-powered units.
Teach best practice: short duty cycles, fresh-water rinse, and don’t run dry.
Macerators make uphill or long-run dumps clean and easy.
Odor Control: Stop Smells at the Source
No perfumes—fix causes:
Maintain trap seals; swap dry traps for HepvO in problem spots.
Replace failing AAVs; clear roof vents; seal cabinet penetrations and floor grommets.
Clean the washer standpipe and galley loops (common gray-odor sources).
Rinse tanks properly; use measured enzyme treatments; avoid harsh chemicals that attack seals.
Your coach smells fresh because the plumbing actually works.