---
product_id: 293818206
title: "Orbit WaterMaster Underground 51240 1/2-Inch Plastic Auto Drain Valve"
brand: "orbit"
price: "$9.95"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/293818206-orbit-watermaster-underground-51240-1-2-inch-plastic-auto-drain
store_origin: US
region: United States of America
---

# Cold water use Easy install Pressure range Orbit WaterMaster Underground 51240 1/2-Inch Plastic Auto Drain Valve

**Brand:** orbit
**Price:** $9.95
**Availability:** ✅ In Stock

## Summary

> 💦 Drain with Confidence: The Ultimate Auto Valve for Your Garden!

## Quick Answers

- **What is this?** Orbit WaterMaster Underground 51240 1/2-Inch Plastic Auto Drain Valve by orbit
- **How much does it cost?** $9.95 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/293818206-orbit-watermaster-underground-51240-1-2-inch-plastic-auto-drain)

## Best For

- orbit enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Lightweight:** Weighing only 9.07 g, this valve is easy to handle and install.
- • **Seamless Installation:** Effortlessly set up your irrigation system with a 1/2-inch male threaded design.
- • **Single Pack Convenience:** Comes as a single unit, making it ideal for targeted replacements.
- • **Optimal Pressure Control:** Designed to operate between 3 to 5 psi, ensuring efficient drainage.
- • **Durable Outdoor Performance:** Crafted from high-quality plastic, perfect for cold water applications.

## Overview

The Orbit WaterMaster Underground 51240 is a 1/2-inch plastic auto drain valve designed for easy installation and optimal performance in cold water applications. With a lightweight design and efficient pressure control, this valve is perfect for enhancing your irrigation system.

## Description

WaterMaster Underground 51240 1/2-Inch Plastic Auto Drain Valve

## Features

- Easy to install
- 1/2-inch male threaded
- Opening pressure: 3 to 5 psi (0, 2 to 0, 34 bars)
- Closing pressure: 5 psi (0, 34 bars) or greater
- For outdoor use with cold water Only

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Orbit Underground/Sunmate |
| Part number | 51240M |
| Item Weight | 9.07 g |
| Product Dimensions | 2.54 x 3.18 x 5.84 cm; 9.07 g |
| Item model number | 51240 |
| Size | 1 Count (Pack of 1) |
| Color | Black |
| Material | Plastic |
| Power source type | Wood |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Orbit WaterMaster Underground 51240 1/2-Inch Plastic Auto Drain Valve - Image 1](https://m.media-amazon.com/images/I/91S5Xw9iyvL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

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**Shop now:** [https://www.desertcart.us/products/293818206-orbit-watermaster-underground-51240-1-2-inch-plastic-auto-drain](https://www.desertcart.us/products/293818206-orbit-watermaster-underground-51240-1-2-inch-plastic-auto-drain)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-06*