---
product_id: 316606673
title: "Barker Valterra-Bristol Model Auto Drain"
brand: "barker"
price: "$1708130"
currency: COP
in_stock: true
url: https://www.desertcart.co/products/316606673-barker-valterra-bristol-model-auto-drain
store_origin: CO
region: Colombia
---

# 12V DC power, 150mA low energy No extra plumbing fittings needed Corrosion-resistant steel & aluminum Barker Valterra-Bristol Model Auto Drain

**Brand:** barker
**Price:** $1708130
**Availability:** ✅ In Stock

## Summary

> 🚐 Simplify your RV life with one switch—ditch the mess, not the adventure!

## Quick Answers

- **What is this?** Barker Valterra-Bristol Model Auto Drain by barker
- **How much does it cost?** $1708130 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/316606673-barker-valterra-bristol-model-auto-drain)

## Best For

- barker enthusiasts

## Why This Product

- Trusted barker brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Durable corrosion-resistant materials for long-term outdoor use
- • **Compact & Lightweight:** Sleek 1.5-inch design weighing just 2 lbs, perfect for any RV setup
- • **Reliable Manual Backup:** Manual operation ensures control even if battery fails
- • **Effortless Tank Dumping:** One push switch for quick, hassle-free black & grey water release
- • **Plug & Play Installation:** Fits Valterra & Bristol valves with zero extra plumbing

## Overview

The Barker Valterra-Bristol Model Auto Drain is a 12V battery-powered, corrosion-resistant valve system designed for effortless dumping of RV black and grey water tanks. It features a quick 3-second cycle time, manual override for battery failure, and installs easily without additional plumbing. Compatible with Valterra and Bristol slide valves, this compact and durable unit streamlines waste management for camping and hiking enthusiasts.

## Description

Just push a switch on the Barker 1 1/2in Valterra-Bristol Model Auto Drain to dump your RV's black and grey water tank. Eliminate hassles with hard to reach and difficult to operate valve locations. Easy, manual operation in case of battery failure or valve problems. No additional plumbing fittings to install - to remove. Constructed of corrosion-resistant steel, aluminum, and plastic. Holding tanks do not have to be dumped to install. Also fits Valterra and Bristol slide valves. Each Auto-Drain comes complete with rocker arm switch, switch box, and complete installation and operating instructions. Voltage is 12 volts DC, amperage is 150 mA, and cycle time is 3 seconds. Also comes in 3in model.

## Features

- Easy, manual operation in case of battery failure
- No additional plumbing fittings to install
- Constructed of corrosion-resistant steel, aluminum and plastic
- Holding tanks do not have to be dumped to install

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Age Range | Kid |
| Color | Grey |
| Size | 1 1/2-Inch |
| Style | Modern |
| Height | 5.8 inches |
| Length | 10.9 inches |
| Weight | 2 Pounds |
| Width | 6.4 inches |
| Material Type | Corrosion-resistant steel, aluminum, plastic |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Power Source | Battery Powered |
| Features | Portable |
| Sport | Camping & Hiking |
| Included Components | Manual (French non-guaranteed), Mounting Hardware, Interrupt Switch, Switch Box with Light |
| Batteries Included? | No |
| Description Pile | 12V |
| Brand | BARKER |
| Department | unisex-adult |
| Manufacturer | Barker |
| Item model number | 24140 |
| Product Dimensions | 27.69 x 16.26 x 14.73 cm; 890 g |
| ASIN | B003VAV852 |

## Images

![Barker Valterra-Bristol Model Auto Drain - Image 1](https://m.media-amazon.com/images/I/71+p5uEgrgL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: Can i buy an extra  switch in my coach.???**
A: The kit comes with a parts list so you can order replacement parts. You'll have to call the company to order an extra switch .

**Q: How far does it pump**
A: This is not a pump. It is only an actuator for your existing gate valve to the black and grey water holding tanks (you'll need one for each holding tank). The electric motor in the kit only opens and closes the valves by pressing a button in inside the RV instead of sliding the valve closed or open by hand at the drain location outside the RV. . If you drained you tanks by gravity, hand opening and closing the holding tank valve by hand, your tanks will still drain by gravity for the same hose distance to the sewer connection after installing the kit. 
If you want to pump out you tanks, you'l have to buy a macerator pump separately.  I bought these electric valve kits for my black and my grey holding tank valves plus a portable Flojet macertor pump. The electric valves are permanently installed on the RV. But when I hook up my sewer connection at the campsite, I attach the macerator pump at the 4 in tank drain outlet. and connect the pump to a pre-installed 12v power connection near the tank valves. The switches for the valves and the pump are inside the RV. so I can drain my tanks from inside the RV, even in the rain or the middle of thenight.

**Q: What is this? I'm guessing a wiring extension kit sold separately from the Barker auto-drain? Description doesn't even say...**
A: This is the Valterra auto drain actuator kit. It installs on a 1.5" or 3" Valterra drain valve and includes the actuator, switch and wiring necessary for installation.

## Frequently Bought Together

- Barker Valterra-Bristol Model Auto Drain
- Valterra-T1003VPM Bladex 3-Inch Waste Valve Body with Metal Handle, Mess-Free Waste Valve for RV's, Campers, Trailers, Black

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-01-29*