Finding the right P trap for a shower, especially in RVs or compact bathrooms, means balancing odor control, leak resistance, and easy installation. The following selections highlight popular, durable P traps designed to seal out sewer gases while fitting 1-1/2 inch plumbing. Each option targets different setups—from RV showers to standard residential tubs—so you can compare material, compatibility, and installation features at a glance.
The summary table below lists five ready-to-ship P traps that align with most shower drain configurations. Use it to quickly compare brands, materials, and key benefits before reading deeper product details.
| Product | Brand | Material | Key Benefit |
|---|---|---|---|
| RV P Trap 1.5 Inch | Leak & Odor Proof Drain Kit | Lesso America | ABS | Strong odor barrier and bug defense, RV-ready |
| Dearborn P9703WBG 1-1/2″ P-Trap | Oatey | PVC | Threaded PVC adapter; reversible J-bend |
| RecPro RV Shower Drain P Trap | RecPro | Plastic (three-part assembly) | RV drainage with odor control and proper seal |
| Self-Sealing Waterless P Trap 1-1/2″ | TJCYGO | Silicone membrane (waterless) | Dry-seal technology; prevents backflow |
| Low Profile 1 1/2 P Trap (Cinsda) | Cinsda | Polypropylene | Flexible, space-saving for tight installs |
RV P Trap 1.5 Inch – Leak & Odor Proof Drain Kit
The RV P Trap from Lesso America is crafted from ABS plastic, offering toughness and corrosion resistance. It emphasizes an odor-proof seal and pest deterrence, making it suitable for outdoor showers, campground setups, and compact RV bathrooms. The trap is designed to block smells and keep washing areas comfortable during extended trips. It supports easy maintenance by trapping debris at the bend, reducing downstream clogs. This model emphasizes portability and rugged use, aligning with RV life that values reliability on the road.
Dearborn P9703WBG P-Trap with Threaded PVC Adapter
Oatey’s Dearborn P9703WBG offers a 1-1/2″ P-trap with a threaded PVC adapter and a reversible J-bend. The PVC construction caters to straightforward cutting and reliable glue connections, which makes it a solid choice for standard residential showers and sinks. The kit’s robust nuts and longer threads improve installation security, reducing the chance of leaks over time. This option suits projects where a traditional, easily serviceable trap is preferred.
RecPro RV Shower Drain and Bathtub Drain P Trap
RecPro’s RV Shower Drain and Bathtub Drain P Trap is designed for mobile living spaces. The unit directs waste toward the gray water tank while maintaining an airtight seal to reduce odors. The three-part assembly typically includes an inlet, bend, and outlet, arranged to minimize odors and block unwanted organisms. It’s a practical option for travelers who need a dependable, RV-friendly drainage solution with straightforward maintenance and compatibility with standard RV drain layouts.
Self-Sealing Waterless P Trap 1-1/2″ (TJCYGO)
The waterless P trap from TJCYGO uses a silicone membrane to form a dry seal that blocks backflow of air and wastewater. This design eliminates evaporation-related seal failures and is ideal for occasional-use fixtures such as RVs, guest bathrooms, boats, or vacation homes. It can replace traditional water seals in various drain lines, including dishwashers and washing machines, where a vented system is impractical. This option provides a maintenance-light approach with long-term odor control.
Low Profile 1 1/2 P Trap – Cinsda
The Cinsda low-profile P trap is designed for space-constrained installations. Made from engineered polypropylene, it provides corrosion resistance and high-temperature tolerance. It’s compatible with flexible drain configurations often found in compact tubs and RV setups, and its flat profile helps fit into shallow cabinet spaces without sacrificing a reliable water seal. This option is well-suited to retrofits or projects where space is at a premium.
Cinsda Bathtub Shower Drain Pipe – Low Profile 1 1/2 P Trap Kit
Another Cinsda option, the low-profile P trap kit for bathtubs focuses on space efficiency while maintaining durability. Built for both standard baths and RV tubs, the polypropylene construction offers heat resistance and long service life. It’s positioned as a versatile replacement component for aging traps or tight installations where a traditional taller trap would be impractical.
Plumb Pak 200WK P Trap – 1-1/4-Inch
The Plumb Pak 200WK P Trap uses a 1-1/4 inch inlet and outlet, with a straightforward installation process. It includes all necessary nuts and washers, making it a practical option for standard bathroom drains. This model emphasizes ease of installation and compatibility with a wide range of residential fixtures, ensuring a reliable barrier against sewer gases and odors when properly installed.
Buying Guide: Key Considerations For Choosing A P Trap
- Material and durability: ABS and PVC are common for RV and residential use. ABS tends to be tougher with good impact resistance, while PVC offers ease of cutting and gluing. Choose based on your environment and installation style.
- Seal type: Water-sealed traps rely on a water barrier, while waterless traps use membranes. Waterless designs reduce seal evaporation risk but may require specific compatibility with fixtures and venting.
- Sizing and compatibility: Confirm 1-1/2 inch is the correct diameter for your drain. Some models use 1-1/4 inch or offer adapters for different connections; verify inlet/outlet dimensions and thread types.
- Installation and maintenance: Look for threaded adapters, reversible bends, and complete kits. Easy maintenance reduces risk of leaks and clogs over time.
- RV versus residential use: RV traps must withstand movement, temperature shifts, and compact spaces. Residential traps prioritize long-term corrosion resistance and easy service in a fixed location.
- Odor control and pest protection: P traps with strong water seals and debris-trapping bends help prevent sewer smells and pest intrusion in both home and RV settings.
- Warranty and accessibility: Check for warranties and availability of replacement parts. A well-supported model improves lifecycle performance and repair options.
When selecting a P trap, assess your bathroom or RV layout, typical usage frequency, and the level of maintenance you’re prepared to perform. A low-profile trap may suit tight spaces, while a waterless option provides maintenance simplicity in infrequently used fixtures. For traditional setups, a PVC adapter and standard J-bend offer a familiar, serviceable solution with straightforward installation. In any case, ensure proper sealing and secure connections to minimize leaks and odors over time.