BARKER 3" Auto Drain RV waste valve actuator — 12V retrofit kit for Valterra/Bristol 3" slide valves, quick 4s cycle & corrosion-r

The Barker 24130 3" Auto Drain is a 12V-powered, fully automatic retrofit valve actuator that opens and closes standard 3" RV waste slide valves with a push-button and indicator light.

If you want to replace manual dumping of grey and black water tanks with a reliable electric opener, the Barker 24130 lets you retrofit existing Valterra and Bristol 3" slide valves without cutting or reworking plumbing. The assembly mounts directly to the slide valve, runs on 12 volts, and completes an open-or-close cycle in under four seconds for the 3" model. Materials are chosen to resist corrosion, and the kit includes the electrical switch and bracket needed for a tidy installation.

How does the Barker 24130 install on my RV's existing waste valve?

Installation is designed to be a retrofit to conventional slide valves so you won’t need to replace your waste valve or alter plumbing. The package includes a mounting bracket and rocker-arm switch box that attach to the valve and your RV interior, with clear instructions for wiring to a 12V source.

• Mounts to 3" slide valves from Valterra and Bristol (valves not supplied)
• Bracket and rocker switch included for fast attachment
• Wires to standard 12V DC system at 200 mA draw
• No pipe cutting or special clamps required

What performance and durability can I expect?

The actuator cycle is short and repeatable: the 3" unit opens or closes in under four seconds, providing quick, positive movement so tanks drain cleanly. Components are made from corrosion-resistant steel, aluminum and plastics chosen for outdoor and wastewater environments.

• Cycle time: about 4 seconds for the 3" model
• Current draw: approximately 200 mA at 12V DC
• Construction: stainless-like steel, aluminum, and durable plastics
• Designed to withstand the exposure common to RV waste systems

Which valves and RV systems is this compatible with?

The Barker 24130 is built for universal retrofit onto common 3" slide valves from major brands. Confirm your existing waste valve is a Valterra or Bristol 3" (or a compatible conventional 3" slide valve) before ordering to ensure a correct fit and operation.

• Compatible with Valterra and Bristol 3" conventional waste valves
• Not compatible with non-slide style or proprietary valves without modification
• Works on standard 12V DC RV electrical systems
• Requires emptied tanks during installation for safety

The kit ships with a lit switch box that displays valve position (open or closed), the actuator hardware and a full set of installation and operating instructions. Because it mounts to the slide valve, the Auto Drain leaves the existing plumbing intact and reverses to manual use if the electrical system is disabled.

Who this is for: RV owners, park managers and retrofit technicians who want a dependable, low-current automatic solution to operate existing 3" slide waste valves. It’s ideal for users who prefer a clean, fast electric alternative to manual dumping while keeping existing plumbing intact and avoiding complex modifications. Verify your valve style and size before purchasing to ensure compatibility.