Camco RV Plumbing Roof Vent Caps, Replace-All Kits & Cyclone Covers
The small vent rising through an RV roof is part of the waste-plumbing ventilation system. Its cover helps shelter the vent opening while leaving a path for air to move. If the cap is missing, the vent base is cracked, or you want a wind-driven cover, Camco offers different replacement parts. Choosing the right one starts with identifying which component needs replacing and measuring the existing vent pipe.
RV roof plumbing vent component diagram
A typical roof plumbing vent consists of the pipe passing through the roof, the roof-mounted vent body and flange, and the protective top cap. Camco sells these in different combinations.
Parts relationship illustration—not a dimensioned exploded drawing. Match the physical vent and pipe to the specified product before installation.
Replace-All plumbing vent caps, bodies and complete kits
Replacing the vent body or complete roof assembly
The white 40032 is a vent-only replacement without kit tape or mounting hardware. The white 40033 and black 40138 are complete Replace-All kits with the vent, installation hardware and putty tape. Camco specifies a 1- to 2⅜-inch outside-diameter pipe range for the complete kits.
Replace-All plumbing vent kit — polar whiteCamco 40033 · Full kitNew vent assembly, installation hardware and putty tape. For compatible vent pipes 1 to 2⅜ inches outside diameter.View part
Replace-All plumbing vent kit — blackCamco 40138 · Full kitBlack vent assembly with installation hardware and putty tape. Same listed 1 to 2⅜-inch vent-pipe outside-diameter range.View part
Polar-white replacement vent assemblyCamco 40032 · Vent onlyReplacement vent body and cap from Camco's vent-only offering, without the mounting hardware or putty tape supplied in kit 40033.View part
Replacing only a missing or damaged cap
When the existing roof flange and vent body are still sound, you may only need a cap. Camco's 40034 and 40137 use spring-tension attachment on compatible vent pipes up to 2 inches in diameter. They do not include a new roof mounting flange.
Polar-white spring-tension vent capCamco 40034 · Cap onlyReplace a missing cap while keeping a serviceable vent base. Camco lists its spring-tension cap for vent pipes up to 2 inches in diameter.View part
Black spring-tension vent capCamco 40137 · Cap onlyCap-only black version for a compatible existing vent base and pipe up to 2 inches in diameter; roof flange is not included.View part
Wind-driven Cyclone vent covers
Camco's Cyclone design uses moving air to help draw holding-tank odours upward through the roof plumbing vent. The 40595 is white and the 40597 is black. They are vent covers, not powered fans, and do not include the RV's vertical plumbing vent pipe. Verify the existing vent's connection, mounting space and clearance before buying.
Cyclone wind-driven vent cover — whiteCamco 40595 · Wind-drivenWhite Cyclone cover designed to use wind to help draw holding-tank odours upward through a compatible plumbing vent.View part
Cyclone wind-driven vent cover — blackCamco 40597 · Wind-drivenBlack version of Camco's wind-responsive rotating Cyclone plumbing-vent cover. Confirm space and pipe fitting before installation.View part
Camco roof plumbing vent part-number comparison
| MPN | Part supplied | Colour | Fit information | Included / design |
|---|---|---|---|---|
| 40034 | Cap only | Polar white | Compatible existing vent; pipe up to 2 in | Spring-tension cap; no base |
| 40137 | Cap only | Black | Compatible existing vent; pipe up to 2 in | Spring-tension cap; no base |
| 40032 | Vent only | Polar white | 1–2⅜ in outside diameter | Vent body and cap; no hardware or tape |
| 40033 | Complete kit | Polar white | 1–2⅜ in outside diameter | Vent, screws/hardware and putty tape |
| 40138 | Complete kit | Black | 1–2⅜ in outside diameter | Vent, screws/hardware and putty tape |
| 40595 | Cyclone vent cover | White | Confirm compatible existing plumbing vent | Wind-driven odour extraction design |
| 40597 | Cyclone vent cover | Black | Confirm compatible existing plumbing vent | Wind-driven rotating design |
Choosing the right roof vent replacement
- Identify the system. Find the waste-plumbing vent pipe on the roof, not the fan, refrigerator or appliance exhaust openings.
- Inspect the existing components. If the base and roof flange are sound and only the cap is gone, compare the 40034 or 40137 cap-only design. If the flange or vent body is damaged, consider a complete kit instead.
- Measure the pipe outside diameter. Camco lists 1 to 2⅜ inches for the 40033/40138 kits, while the spring-tension replacement caps are specified for pipes up to 2 inches. These are not the same stated range.
- Check what comes in the package. The 40033 and 40138 kits include hardware and putty tape; the 40032 vent-only product does not. The caps do not include a roof flange.
- Protect the roof sealing system. If replacing a roof-mounted flange, remove damaged sealant, install with materials compatible with the RV roof construction, and seal fasteners and edges to the roof manufacturer's instructions. Keep the plumbing vent opening clear.
For other RV waste-system service parts, the Camco RhinoFLEX sewer-hose parts guide covers dump hoses, elbows, caps and gaskets at the drain connection.
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