---
product_id: 660551923
title: "RV 3-Way by-Pass RV Winterizing Kit - Brass RV Pump Converter Winterizing Part, Double Shut-off Design with 59\" Hose 4 Clamps, Water System Antifreeze Pump Converter Valve Replacement Kit (1/2\"NPT)"
brand: "madholly"
price: "HK$463"
currency: HKD
in_stock: true
url: https://www.desertcart.hk/products/660551923-rv-3-way-by-pass-rv-winterizing-kit-brass-rv
store_origin: HK
region: Hong Kong
---

# Double shut-off valve design High-density brass construction 59-inch flexible siphon hose RV 3-Way by-Pass RV Winterizing Kit - Brass RV Pump Converter Winterizing Part, Double Shut-off Design with 59" Hose 4 Clamps, Water System Antifreeze Pump Converter Valve Replacement Kit (1/2"NPT)

**Brand:** madholly
**Price:** HK$463
**Availability:** ✅ In Stock

## Summary

> ❄️ Winterize Like a Pro, No Compromises!

## Quick Answers

- **What is this?** RV 3-Way by-Pass RV Winterizing Kit - Brass RV Pump Converter Winterizing Part, Double Shut-off Design with 59" Hose 4 Clamps, Water System Antifreeze Pump Converter Valve Replacement Kit (1/2"NPT) by madholly
- **How much does it cost?** HK$463 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/660551923-rv-3-way-by-pass-rv-winterizing-kit-brass-rv)

## Best For

- madholly enthusiasts

## Why This Product

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

## Key Features

- • **Leak-Proof Confidence:** Includes 4 secure clamps and gasket-sealed inlet to prevent leaks and keep your system airtight.
- • **Precision Flow Control:** Dual shut-off valve lets you manage water channels independently—ultimate control at your fingertips.
- • **Extended Reach, Zero Hassle:** 59-inch flexible PVC hose resists cracking even in freezing temps for effortless winterizing.
- • **All-in-One Winterizing Solution:** Complete kit with valve, hose, clamps, Teflon tape, and instructions—no extra parts needed.
- • **Built to Last, Built for Safety:** Premium nickel-plated brass valve offers superior durability and heat resistance over plastic alternatives.

## Overview

The MADHOLLY RV 3-Way By-Pass Winterizing Kit features a durable nickel-plated brass valve with a unique double shut-off design for precise water flow control. It includes a 59-inch flexible, corrosion-resistant PVC siphon hose, 4 clamps, and Teflon tape to ensure leak-proof connections. This all-in-one kit simplifies RV winterizing by providing everything needed for efficient antifreeze pump conversion and protection against freezing damage.

## Description

Do you worry about the tank flush lines in your RV freezing during the winter? Would you like an effective and practical tool to help you easily inject antifreeze into your RV's water tank? Look no further than our RV pump converter winterizing kit! This kit is designed to meet your needs and prevent damage to your RV's water system due to freezing. Features: 1. The 59-inch flexible PVC hose provides extended reach and remains pliable in cold temperatures. 2. The dual-switch valve allows for precise water flow control with separate channel management. 3. 4 clamps and a gasket ensure secure connections and prevent leaks, with optional Teflon tape for extra reinforcement. 4. The high-density brass construction offers exceptional durability and safety compared to plastic alternatives. 5. The kit includes a 1/2" NPT valve, 59" hose, four clamps, Teflon tape, and instructions for easy antifreeze application. Specification: - Quantity: 1/2" NPT replacement RV 3-way bypass valve + 59" PVC hose + 4 clamps + Teflon tape + instruction. - Material: high-density brass. - Size: Connector: 1/2" NPT; hose length: 59 inches. Warm Tips: You can use Teflon tape on threaded connections to ensure a proper seal.

## Features

- Extended Siphon Hose: Our RV antifreeze pump kit include a 59-inch siphon hose, offering extended reach. Made from a softer, more flexible PVC material, pressure-resistant, corrosion-resistant, and not easily prone to aging or cracking, this hose stays pliable and easy to handle even in extremely cold temperatures.
- Double Shut-off Design: Our RV pump converter winterizing part features a dual-switch design, unlike other valves with a single switch, this design enables seamless transitions and precise water flow management, allowing you to control each channel separately for enhanced flexibility and convenience.
- Prevent Leakage: We provide you with 4 clamps to secure the connection between the converter and the hoses, ensuring that the hoses will not come loose and the antifreeze will not leak. The internal threaded inlet connected to the pump is equipped with a gasket to provide a reliable seal. In addition, you can use Teflon tape on all inlets for further reinforcement.
- Premium Material: Our valve replacement kit is crafted from high-density brass, ensuring exceptional durability, wear resistance, and heat resistance. Unlike plastic alternatives, this brass construction offers superior longevity and safety, making it ideal for applications like RV winterizing, kitchen, industry, shower and so on.
- Package Contents: You'll get a complete RV winterizing kit that includes a 1/2" NPT replacement RV 3-way bypass valve, a 59" PVC hose, 4 clamps, 1 roll of Teflon tape and an instruction. With no additional fittings, you can easily connect antifreeze, RV pump and pipes and say goodbye to the complicated process of adding antifreeze.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | MADHOLLY |
| Part number | MADHOLLY-RV-Antifreeze-Pump-Kit |
| Item Weight | 325 g |
| Product Dimensions | 9.5 x 8.99 x 2.49 cm; 325 g |
| Item model number | MADHOLLY-RV-Antifreeze-Pump-Kit |
| Color | Silver |
| Style | RV Antifreeze Pump Kit |
| Material | Nickel Plated Brass |
| Pattern | RV Antifreeze Pump Kit |
| Item Package Quantity | 1 |
| Included components | brass valve |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** MADHOLLY
- **Colour:** Silver
- **Material:** Nickel Plated Brass
- **Style:** RV Antifreeze Pump Kit
- **Item weight:** 0.33 Kilograms

## Images

![RV 3-Way by-Pass RV Winterizing Kit - Brass RV Pump Converter Winterizing Part, Double Shut-off Design with 59" Hose 4 Clamps, Water System Antifreeze Pump Converter Valve Replacement Kit (1/2"NPT) - Image 1](https://m.media-amazon.com/images/I/71-MIzf7U+L.jpg)
![RV 3-Way by-Pass RV Winterizing Kit - Brass RV Pump Converter Winterizing Part, Double Shut-off Design with 59" Hose 4 Clamps, Water System Antifreeze Pump Converter Valve Replacement Kit (1/2"NPT) - Image 2](https://m.media-amazon.com/images/I/71kt6tkk2PL.jpg)
![RV 3-Way by-Pass RV Winterizing Kit - Brass RV Pump Converter Winterizing Part, Double Shut-off Design with 59" Hose 4 Clamps, Water System Antifreeze Pump Converter Valve Replacement Kit (1/2"NPT) - Image 3](https://m.media-amazon.com/images/I/71oVSTnsS-L.jpg)
![RV 3-Way by-Pass RV Winterizing Kit - Brass RV Pump Converter Winterizing Part, Double Shut-off Design with 59" Hose 4 Clamps, Water System Antifreeze Pump Converter Valve Replacement Kit (1/2"NPT) - Image 4](https://m.media-amazon.com/images/I/71vrwZk8UqL.jpg)
![RV 3-Way by-Pass RV Winterizing Kit - Brass RV Pump Converter Winterizing Part, Double Shut-off Design with 59" Hose 4 Clamps, Water System Antifreeze Pump Converter Valve Replacement Kit (1/2"NPT) - Image 5](https://m.media-amazon.com/images/I/71pUL1oFW3L.jpg)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-25*