When your RV's washer P-trap dries out from non-use, gray tank odors will escape through the drain. Add water monthly, install a trap primer, or use a P-trap cap to maintain the water seal and prevent sewer gases.
Thor Ace has both macerator and gravity dump. Look for valves in the wet bay that direct flow to one or the other. Close the valve to the outlet you are not using. Some setups have both connected - gravity works by default, macerator works when pump is on.
The Camco Rhino Sewer Hose Adapter Pro is a versatile solution that connects to both threaded and non-threaded RV sewer outlets using a secure clamp system. It eliminates the need for multiple adapters and provides a reliable, leak-resistant connection for most RV waste systems.
Top Presto-Fit alternatives: Camco RhinoFLEX (best value), Valterra Dominator (heavy duty), Lippert Waste Master (premium cam-lock). Look for 20+ mil thickness, quality fittings, and cold-weather flexibility. Avoid ultra-cheap thin-wall hoses.
Odor while traveling is pressure differential pushing tank air back into coach. Check vent for blockage. Add powered vent fan or 360 Siphon cap to solve. Also check Vacuflush ball seal for wear allowing odor bypass.
Tight sewer connections from oversized flanges. Apply silicone lubricant, lightly sand the bayonet ears with fine sandpaper, or switch to slip-fit style connectors for easier use.
Sewer hose without fittings is rare - buy cheap complete kit and swap fittings, or try industrial bulk hose. Consider repairing leak with hose clamp or sewer hose repair tape.
Your RV sewer hose will likely freeze at 25°F, especially with the uphill section that creates standing water. The two-inch rise at your hookup point is particularly vulnerable to freezing.
A slow-draining gray tank is typically caused by grease buildup, soap residue, or debris in the tank or drain pipe. Most issues can be resolved with tank flushing, valve cleaning, or using specialized RV tank treatments.
An RV toilet that won't hold water usually has a faulty ball seal, blade seal, or toilet valve. Most issues can be fixed by cleaning or replacing the seal assembly, which typically costs $15-30 and takes about an hour.