This bundle provides an overview of essential components for plumbing a grey water system in a camper van. It covers everything from the primary holding tank to drainage, monitoring, and discharge solutions. This selection is designed for DIY builders to create a functional and reliable waste management setup in their mobile living space.
Curated by The Shelf Curator · Updated June 2026
Built for DIY van builders and off-road adventurers who need a leak-proof drainage system capable of handling chassis vibrations. Not for standard RVs with fixed gravity-dump systems—this shop focuses on compact, under-mount grey water solutions.
Curator's pick: HepvO Waterless Waste Valve
This valve replaces a traditional P-trap, which is prone to self-siphoning and freezing in mobile environments. Its membrane design prevents sewer gas backflow regardless of vehicle incline or tank pressure, solving the space constraint issue common in low-clearance builds.
⚠ Worth knowing: Using a 12V electric ball valve for drainage requires a redundant manual override or high-amperage wiring to ensure the tank can be emptied if the house battery system fails. These kits require precision drilling into polyethylene tanks, where a single misaligned gasket can lead to permanent structural leaks.
Van Build Fresh Water Systems and FiltrationSelf-Priming 12V Diaphragm Water PumpsOff-Grid Composting and Cassette Toilet Solutions
This shop is built around providing a comprehensive overview of essential components for plumbing a grey water system in a camper van. It focuses on practical, durable solutions designed specifically for the challenges of mobile living, ensuring responsible waste management.
This setup is ideal for DIY van builders and conversion enthusiasts looking to create a self-contained and reliable waste management system. It's for those who want convenience, odor control, and the ability to monitor their grey water levels from within their mobile living space.
Start with the Grey Water Holding Tank and Flexible PVC Spa Hose for the most basic collection. The full build, including monitoring and automated discharge, will range from $205 to $425.
Full build
$205–$425
Starter
$80–$200
Tank + Hose only
Best forVan BuildersDIY EnthusiastsOff-Grid LivingMobile PlumbingOdor Control
This is a container designed to store waste water from sinks and showers in a camper van. It is suitable for DIY van builders and conversion enthusiasts to create a self-contained plumbing system. It solves the problem of waste water disposal, allowing for responsible collection and emptying.
Plastic construction
Various capacities available
Multiple inlet/outlet ports
Rectangular or irregular shapes
Mounting points for secure installation
In this shop: This grey water holding tank is central to the "Camper Van Grey Water Tank Plumbing Kits" theme, serving as the core component for waste water collection.
This flexible PVC hose is specifically designed for plumbing applications, offering durability and vibration resistance. It is intended for use in mobile setups like camper vans where rigid piping might be impractical or prone to cracking. It provides a simple solution for connecting drains to a grey water tank while accommodating vehicle movement.
1.5 inch diameter
Flexible PVC material
Corrosion resistant
Smooth interior for flow
Rated for drain applications
In this shop: The 1.5 Inch Flexible PVC Spa Hose fits the "Camper Van Grey Water Tank Plumbing Kits" vibe by providing a practical, vibration-resistant solution for drain lines in a mobile environment.
This is an electrically operated valve that can be opened and closed remotely to discharge liquids. It is useful for camper van owners who want to empty their grey tank without needing to go outside the vehicle. This component automates the waste disposal process, improving convenience.
12V operation
Ball valve mechanism
Motorized actuation
Weather-resistant housing
Remote control capability
In this shop: The 12V Electric Ball Valve aligns with the "Camper Van Grey Water Tank Plumbing Kits" theme by offering a modern, convenient method for remote tank emptying.
This adapter is a plumbing fitting used to connect flexible hoses to a rigid pipe or tank inlet/outlet. It is essential for ensuring a secure, leak-free connection in a camper van's plumbing system, particularly when transitioning between different types of tubing. This fitting simplifies the integration of flexible drain lines into the grey water tank.
Plastic or brass material
Barbed end for hose
Threaded end for connection
Various diameter options
Sealing washer often included
In this shop: The Straight Barb Fitting Adapter is relevant to the "Camper Van Grey Water Tank Plumbing Kits" vibe as a small but crucial piece for ensuring proper system connections.
This is a compact, waterless trap designed to prevent odors from a waste water system from entering the living space. It is ideal for camper vans where traditional P-traps might take up too much vertical space or be prone to siphoning during travel. This valve offers an efficient, space-saving solution for odor control.
No water seal required
Compact design
One-way membrane
Prevents odors and insects
Vertical or horizontal installation
In this shop: The HepvO Waterless Waste Valve is a clever addition fitting the "Camper Van Grey Water Tank Plumbing Kits" theme by providing an innovative, space-saving odor solution for mobile setups.
This kit provides a system for monitoring the fill level of a waste water tank. It is useful for camper van owners to know when their grey tank needs to be emptied, preventing overflows and maintaining system awareness. This component offers critical information for managing onboard resources.
Multiple probe sensors
Dash-mount display
LED or LCD indicators
Easy installation
12V compatible
In this shop: The Waste Water Level Sensor Kit aligns with the "Camper Van Grey Water Tank Plumbing Kits" vibe by providing essential monitoring capabilities for effective waste management.
This system allows for convenient, remote emptying of your grey water tank, eliminating the need to exit the vehicle.
The combination of flexible piping and waterless traps ensures an odor-free living space and prevents siphoning during travel.
Integrated level sensing provides critical information about your waste water capacity, preventing overflows and aiding in resource management.
What to know
The electrical components, like the ball valve and level sensor, require careful wiring and a reliable 12V power source for proper operation.
While flexible, the hose and tank connections need precise measurement and secure fitting to prevent leaks and ensure long-term durability in a vibrating vehicle.
How to use this together
1
Install the Grey Water Tank
Securely mount the Grey Water Holding Tank in its intended location, ensuring it's accessible for draining but protected from road hazards. Proper mounting is crucial for stability, as a full tank can be heavy and shift during travel.
2
Connect Drain Lines
Use the 1.5 Inch Flexible PVC Spa Hose and Straight Barb Fitting Adapters to connect your sinks and showers to the inlet of the Grey Water Holding Tank. Install the HepvO Waterless Waste Valve directly under each drain to prevent odors from entering the living space, as its compact design saves space compared to traditional traps.
3
Integrate Monitoring and Discharge
Install the Waste Water Level Sensor Kit into the Grey Water Holding Tank, following the manufacturer's instructions for accurate readings. Connect the 12V Electric Ball Valve to the tank's outlet and wire it to a switch inside your camper, allowing you to remotely open and close it for convenient waste discharge.
