---
product_id: 526868880
title: "Hot Tub 1-Inch ON/Off Neck and Waterfall Valve Insert with O-Rings Compatible with Marquis Spas DIY350-6326"
brand: "diy part center"
price: "€ 30.54"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.it/products/526868880-hot-tub-1-inch-on-off-neck-and-waterfall-valve
store_origin: IT
region: Italy
---

# Leak-proof O-ring seal 1-inch precision valve size DIY-friendly quick install Hot Tub 1-Inch ON/Off Neck and Waterfall Valve Insert with O-Rings Compatible with Marquis Spas DIY350-6326

**Brand:** diy part center
**Price:** € 30.54
**Availability:** ✅ In Stock

## Summary

> 💦 Upgrade your spa game with precision flow control!

## Quick Answers

- **What is this?** Hot Tub 1-Inch ON/Off Neck and Waterfall Valve Insert with O-Rings Compatible with Marquis Spas DIY350-6326 by diy part center
- **How much does it cost?** € 30.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/526868880-hot-tub-1-inch-on-off-neck-and-waterfall-valve)

## Best For

- diy part center enthusiasts

## Why This Product

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

## Key Features

- • **Complete Replacement Kit:** Includes valve insert plus two durable O-rings and lubricant for a secure, leak-free seal
- • **Perfect Spa Compatibility:** Seamlessly fits Marquis Spas DIY350-6326 for hassle-free replacement
- • **Effortless DIY Installation:** No professional tools needed—get your spa back in action fast
- • **Enhanced Water Flow Control:** Easily adjust neck and waterfall water flow to create your ideal spa vibe
- • **Durable High-Quality Materials:** Engineered to endure frequent spa use without wear or corrosion

## Overview

This 1-inch ON/OFF neck and waterfall valve insert is a direct replacement for Marquis Spas DIY350-6326, featuring durable plastic construction, two leak-proof O-rings, and included lubricant. Designed for easy DIY installation, it ensures reliable water flow control and a secure fit to keep your spa experience flawless.

## Description

Hot Tub Compatible with Marquis Spa 1 Inch On/Off Neck and Waterfall Valve Insert. 350-6326 and 2 identical O-rings;Upgrade your Marquis Spa with the DIY350-6326 Waterfall Valve Insert, designed for easy replacement and enhanced spa functionality. This high-quality valve inserts, and O-ring set ensures smooth water flow control, adding a soothing touch to your hot tub experience.

## Features

- You will receive one valve, which includes two identical O-rings and a sufficient amount of lubricant for this item.
- Perfect Compatibility: Designed to replace the Spa 1-Inch On/Off Neck and Waterfall Valve Insert (DIY350-6326).
- Complete Replacement Kit: Includes 1 valve insert (3.5 inches tall) and 2 durable O-rings (805-0113) for a secure, leak-free fit.
- Premium Materials: Crafted from durable, high-quality materials to withstand frequent use in spa environments.
- Simple DIY Installation: Quickly install this replacement valve with no professional tools required.
- Enhanced Water Flow Control: Effortlessly manage water flow to maintain a relaxing spa ambiance.
- Check Compatibility: Compare your original part and provided images to ensure the correct fit for your spa.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Dimensions L x W x H | 1"L x 1"W x 3"H |
| Shape | Round |
| Color | white |
| Material | Plastic |

## Product Details

- **Brand:** Diy Part Center
- **Color:** white
- **Product Dimensions:** 1.32"L x 0.75"W x 3.5"H
- **Material:** Plastic
- **Shape:** Round

## Images

![Hot Tub 1-Inch ON/Off Neck and Waterfall Valve Insert with O-Rings Compatible with Marquis Spas DIY350-6326 - Image 1](https://m.media-amazon.com/images/I/51qLZYgHrlL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fixed Aquaterra waterfall
*by S***A on May 19, 2025*

This is the part that broke probably causing my pump and control board to fail. The rubber seal from this was missing and most likely stuck in the impeller causing overheating.If your waterfall won’t turn off I suggest replacing this part sooner than later.

### ⭐⭐⭐⭐⭐ It works.
*by K***Y on June 5, 2025*

Looks like the original and does its job just like the original.

### ⭐⭐⭐⭐⭐ Fixed our tub
*by J***E on November 16, 2024*

Our hot tub was leaking, because the waterfall feature knob couldn’t be shut off and was running continuously. We did a little googling, and discovered that a small part inside the knob had worn away or disintegrated, so the integrity of the knob just wasn’t good anymore. A few bucks on this replacement part, and we quickly fixed our problem! The waterfall turns off no problem, and actually switching out this part was a cinch. Definitely a great value!

## Frequently Bought Together

- Hot Tub 1-Inch ON/Off Neck and Waterfall Valve Insert with O-Rings Compatible with Marquis Spas DIY350-6326
- Waterway Plastics 711-4050 Ribbed O-ring/Gasket used on 1½" Spa Heaters and Pump Unions
- Hot Tub Classic parts Hot Tub 1 Inch On/Off Neck and Waterfall Valve Insert Compatible with Most Marquis Spa 350-6326, Pack of 2

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**Shop now:** [https://www.desertcart.it/products/526868880-hot-tub-1-inch-on-off-neck-and-waterfall-valve](https://www.desertcart.it/products/526868880-hot-tub-1-inch-on-off-neck-and-waterfall-valve)

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-01-29*