Answering the most common buyer question: which RV sink P trap offers reliable sealing and easy replacement for mobile homes, campers, and RVs with single-sink setups. The top picks below are best for different needs—durability, easy installation, odor control, and compact fit. This guide helps you choose based on material, size, and compatibility. Read on to discover five solid options and how each helps specific RV living scenarios.
Summary Of Top Picks
- Danco 88188 1-1/2-Inch X 1-1/2-Inch Tub Trap, Black — Durable plastic, easy install, standard 1 1/2″ tubing.
- Danco 88189X 1-1/4″ x 1-1/2″ Mobile Home/RV Sink Trap, Black — Small-diameter option designed for RV and mobile homes.
- Camco Flexible Camper/RV Drain (37420) — Complete drain system for single-sink campers, includes hose and compatibility with standard fittings.
- 1.5″ RV Sink Drain P Trap, Black ABS — Adjustable, odor-blocking, deep-bend design for high-usage kitchens and baths.
- Yariwiz Black P Trap 1 1/2 Inch — Upgrade option with threaded adapter and washer for leak-proof performance.
Danco 88188 1-1/2-Inch Tub Trap, Black
The Danco 88188 is a durable plastic tub trap with a 1-1/2 inch tubing diameter, featuring a 2 inch captured nut for secure installation. It suits RVs and mobile homes using standard 1-1/2 inch drainage. Best for buyers seeking a straightforward, no-fuss replacement with reliable sealing in compact spaces.
Best for: RVs or mobile homes needing a simple, ready-to-install trap with a standard size. Why selected: reliable, affordable, and compatible with typical 1-1/2″ sink drains. Limitation: may require additional fittings if your existing piping uses non-standard connections.
Danco 88189X 1-1/4″ x 1-1/2″ Mobile Home/RV Sink Trap, Black
This Danco trap is designed for mobile homes and RVs, combining a 1-1/2 inch diameter with a compact 1-1/4 inch inlet in a single-piece black ABS construction. Best for: RV owners needing a compact, ready-made P-trap for small or space-constrained sinks. Why selected: specifically marketed for mobile homes and RVs. Limitation: ABS plastic may be less heat resistant than metal options in hot-water-heavy installations.
Camco Flexible Camper/RV Drain (37420)
Camco’s complete RV sink drain system is rust-proof and designed for campers with a single sink and no holding tanks. It includes 25 inches of ¾-inch ID hose and accepts standard 1 ½-inch-11 ½ threaded fittings. Best for: campers seeking an integrated drain solution with flexible hose and straightforward installation. Why selected: a full drain system reduces compatibility concerns. Limitation: designed for single-sink configurations and specific hose size compatibility.
1.5″ RV Sink Drain P Trap | Black ABS
This black ABS P trap is an adjustable, leak-proof drain kit designed for RV, kitchen, and bathroom use. Its U-shaped water seal helps block odors and sewer gases, while trapping debris to reduce clogs. Best for: RV kitchens and bathrooms where odor control is a top concern. Why selected: strong odor barrier and versatile for multiple sink types. Limitation: ABS may be less durable under heavy usage compared to metal alternatives.
(1 Pack) Yariwiz Black P Trap 1 1/2 Inch
Yariwiz offers a 1 1/2 inch black P trap with a threaded adapter and blue TPE washer included. Best for: updating kitchen and bathroom sinks with a leak-proof threaded connection. Why selected: provides an upgraded seal with a sealed adapter system. Limitation: installation requires attention to thread compatibility with existing drain fittings.
Buying Guide: Key Purchase Considerations
- Size compatibility: Most RV sinks use 1-1/2 inch or 1-1/4 inch connections. Confirm your drain diameter before buying.
- Material choice: ABS plastic offers light weight and corrosion resistance; PVC is common for RV drains; metal options provide durability but may be heavier and harder to install in compact spaces.
- Sealing mechanism: Look for a tight-fitting nut and leak-proof washers. Some models include built-in water seals to reduce sewer gas odors.
- Installation ease: Single-piece designs or complete drain kits can simplify replacement in tight crawlspaces often found in RVs.
- Odor control: P traps with deep bends and water seals help block odors in holding tanks environments.
- Compatibility with existing fittings: Ensure thread standards (NPSM vs. pipe thread) match your sink outlets and hoses.
Frequently Asked Questions
- What is the typical size for RV sink P traps?
Most RV sinks use 1-1/2 inch drains; some smaller units use 1-1/4 inch. Always measure the outlet diameter before purchasing.
- Are plastic P traps as durable as metal?
Yes for many RV applications, especially ABS and PVC traps. They resist corrosion and are lighter, but metal traps can offer greater long-term rigidity in high-use areas.
- Can I use a regular household P trap in an RV?
Only if the dimensions and threading match your RV sink’s drain fittings. Check both diameter and thread standards.
- Do traps help prevent odors in RVs?
Yes. A properly sealed P trap with a water barrier blocks sewer gases from entering living spaces.
- What should I do if a trap leaks after installation?
Ensure all nuts are tightened to the recommended torque, washers are seated, and the trap is aligned with the drain outlet. If leaks persist, inspect for cracks or misfit parts.
- Is a complete drain kit better than a single trap?
For some RV setups, a complete drain kit can simplify installation and ensure compatibility, but a single, properly matched P trap can be sufficient for straightforward sinks.