---
product_id: 52796361
title: "Upgraded RV Water Valve 385311641 Replacement for Dometic Pedal-Flush 300 310 320 301 311 321 Series Toilet,Compatible with Sealand Marine Toilet,Hardware Included"
brand: "byenins"
price: "¥4248"
currency: JPY
in_stock: true
reviews_count: 8
category: "Byenins"
url: https://www.desertcart.jp/products/52796361-upgraded-rv-water-valve-385311641-replacement-for-dometic-pedal-flush
store_origin: JP
region: Japan
---

# DIY-friendly installation Includes upgraded Phillips screws Freeze-resistant durability Upgraded RV Water Valve 385311641 Replacement for Dometic Pedal-Flush 300 310 320 301 311 321 Series Toilet,Compatible with Sealand Marine Toilet,Hardware Included

**Brand:** byenins
**Price:** ¥4248
**Availability:** ✅ In Stock

## Summary

> 🚐💧 Keep your RV leak-proof and adventure-ready with the ultimate water valve upgrade!

## Quick Answers

- **What is this?** Upgraded RV Water Valve 385311641 Replacement for Dometic Pedal-Flush 300 310 320 301 311 321 Series Toilet,Compatible with Sealand Marine Toilet,Hardware Included by byenins
- **How much does it cost?** ¥4248 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/52796361-upgraded-rv-water-valve-385311641-replacement-for-dometic-pedal-flush)

## Best For

- byenins enthusiasts

## Why This Product

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

## Key Features

- • **Effortless DIY Fix:** Replace your faulty valve in minutes with included hardware—no plumber needed, saving you time and costly repairs.
- • **Compact Yet Crucial:** Small valve, big impact—quickly solves leaks to keep your RV bathroom functional and your trip stress-free.
- • **Travel-Ready Stability:** Includes hose clamps and screws to lock pipes in place, preventing leaks caused by RV movement on the road.
- • **Precision Thread Design:** Avoid leaks with snug, secure connections—over-tightening is a no-go to protect valve integrity and maintain a perfect seal.
- • **Freeze-Proof Reliability:** Engineered to resist cracking and leaks even in sub-zero temps, ensuring your RV’s water system stays intact through every adventure.

## Overview

The Upgraded RV Water Valve 385311641 is a durable, freeze-resistant replacement part compatible with Dometic Pedal-Flush 300-321 series and Sealand Marine toilets. Designed for easy DIY installation, it includes upgraded Phillips screws and hardware to secure connections and prevent leaks caused by RV movement. Its precision threads ensure a reliable, leak-proof seal without over-tightening, making it an essential maintenance item for any RV traveler.

## Description

Buy Upgraded RV Water Valve 385311641 Replacement for Dometic Pedal-Flush 300 310 320 301 311 321 Series Toilet,Compatible with Sealand Marine Toilet,Hardware Included: Water Hoses & Fittings - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Better screws! - Works perfect! Some reviews Complain about the heat molding but it looks just like the old one and I gave it a pretty good tug and it's just as strong as the other one. Didn't budge. Screws with this one are way better though because they give you Phillips head instead of the stupid flat head on the old screws. Phillips head is easier because the screw driver doesn't slip. No more leak! Ready for summer! Note: I have noticed this valve is notorious for breaking in winter. To blow the water completely out of this I hooked up my air compressor with the blow nozzle and disconnected the hose in the bathroom that connects directly to this valve and blew air in through that hose into the valve at about 20psi while holding the foot pedal down and it blew out quite a bit of water. We have cold temps approaching again. Hopefully this will keep it from freezing and breaking again.
Review: I left a poor review previously. Maybe wrong on review. - It worked for about 1.5 years then started leaking again. After rethinking we had a wind storm at the park where we keep our 5th wheel. Power went out for two weeks in freezing temperatures. I blew the lines out prior to winter but doubt it would clear water from this valve. Leaking could be caused from freezing weather as there was no heat for 2 weeks. It worked great when reinstalled. Changing my review back to great.

## Features

- 1.385311641 Valve Replacement Part :This replacement valve is designed for 300/310/320/321/311/301 series pedal-flush toilets.Resists freezing and cracks, even in sub-zero temps,solving water waste and leakage issues. Rigorously tested for reliability, essential items for your RV travel.
- 2.Replace Leak Valve Easily:Fix leak, inefficient valves in minutes—no pro help needed.The 385311641 valve is designed for hassle-free DIY installation.With basic tools,align the valve,secure with included parts,and tighten gently.It disassembles easily later without damage. it restores optimal flushing quickly, avoiding costly water damage.
- 3.Avoid Over-Tightening:Protect threads by not over-tightening when connecting to water pipes.The valve’s precision threads enhance strength—over-tightening can strip them, causing leaks. A firm, snug fit suffices to maintain the leak-proof seal, ensuring durability and proper function.
- 4.Secure Pipes with Fasteners:RV movement can loosen pipes—use the included hose clamp and screws to secure connections.This prevents shifting or detachment during travel, eliminating leaks and water waste.Ensure a stable and sealed connections.
- 5.Small valve, Big role: During your RV trip, toilet water valve leak is a troublesome and tricky problem, greatly affecting your RV travel experience. This small and portable 385311641 valve,used for maintenance as a backup to quickly solve the leakage problem and ensure a relax RV trip for you.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Byenins |
| Exterior Finish | Plastic |
| Inlet Connection Size | 3.35 Inches |
| Inlet Connection Type | hose-connection |
| Item dimensions L x W x H | 4.8 x 3.35 x 1.46 inches |
| Material | Plastic |

## Product Details

- **Material:** Plastic
- **Brand:** Byenins
- **Item dimensions L x W x H:** 4.8 x 3.35 x 1.46 inches
- **Exterior Finish:** Plastic
- **Inlet Connection Size:** 3.35 Inches
- **Inlet Connection Type:** hose-connection
- **Outlet Connection Type:** hose-connection
- **Number of Ports:** 2
- **Outlet Connection Size:** 3.35 Inches
- **Manufacturer:** ‎Byenins

## Images

![Upgraded RV Water Valve 385311641 Replacement for Dometic Pedal-Flush 300 310 320 301 311 321 Series Toilet,Compatible with Sealand Marine Toilet,Hardware Included - Image 1](https://m.media-amazon.com/images/I/61oqsc-iaeL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Better screws!
*by A***R on February 24, 2018*

Works perfect! Some reviews Complain about the heat molding but it looks just like the old one and I gave it a pretty good tug and it's just as strong as the other one. Didn't budge. Screws with this one are way better though because they give you Phillips head instead of the stupid flat head on the old screws. Phillips head is easier because the screw driver doesn't slip. No more leak! Ready for summer! Note: I have noticed this valve is notorious for breaking in winter. To blow the water completely out of this I hooked up my air compressor with the blow nozzle and disconnected the hose in the bathroom that connects directly to this valve and blew air in through that hose into the valve at about 20psi while holding the foot pedal down and it blew out quite a bit of water. We have cold temps approaching again. Hopefully this will keep it from freezing and breaking again.

### ⭐⭐⭐⭐⭐ I left a poor review previously. Maybe wrong on review.
*by R***R on June 25, 2023*

It worked for about 1.5 years then started leaking again. After rethinking we had a wind storm at the park where we keep our 5th wheel. Power went out for two weeks in freezing temperatures. I blew the lines out prior to winter but doubt it would clear water from this valve. Leaking could be caused from freezing weather as there was no heat for 2 weeks. It worked great when reinstalled. Changing my review back to great.

### ⭐⭐⭐⭐⭐ Simple fix
*by K***R on December 7, 2025*

Perfect fit

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---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-19*