---
product_id: 535719804
title: "Hot Tub 1 Inch On/Off Neck and Waterfall Valve Insert Compatible with Most Marquis Spa 350-6326, Pack of 2"
brand: "hot tub classic parts"
price: "¥6929"
currency: JPY
in_stock: true
reviews_count: 13
category: "Hot Tub Classic Parts"
url: https://www.desertcart.jp/products/535719804-hot-tub-1-inch-on-off-neck-and-waterfall-valve
store_origin: JP
region: Japan
---

# On/Off control for waterfalls Durable acrylic & plastic build 1-inch precision fit Hot Tub 1 Inch On/Off Neck and Waterfall Valve Insert Compatible with Most Marquis Spa 350-6326, Pack of 2

**Brand:** hot tub classic parts
**Price:** ¥6929
**Availability:** ✅ In Stock

## Summary

> 💦 Elevate your spa game—control your waterfall vibes like a pro!

## Quick Answers

- **What is this?** Hot Tub 1 Inch On/Off Neck and Waterfall Valve Insert Compatible with Most Marquis Spa 350-6326, Pack of 2 by hot tub classic parts
- **How much does it cost?** ¥6929 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/535719804-hot-tub-1-inch-on-off-neck-and-waterfall-valve)

## Best For

- hot tub classic parts enthusiasts

## Why This Product

- Trusted hot tub classic parts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Endure:** Crafted from high-quality acrylic and plastic, ensuring long-lasting performance even under constant water exposure.
- • **Universal Compatibility:** Designed to fit most Marquis Spa models, including MasterSpa and Catalina Nantucket spas—no guesswork needed.
- • **Hassle-Free Installation:** No assembly required—upgrade your spa’s water features in minutes and get back to relaxing faster.
- • **Seamless Spa Flow Control:** Effortlessly toggle your spa’s neck and waterfall features with precision On/Off valve inserts.
- • **Trusted by Spa Enthusiasts:** Highly rated with a 4.4-star average, this pack of two inserts keeps your spa’s waterfalls flowing perfectly.

## Overview

The Hot Tub 1 Inch On/Off Neck and Waterfall Valve Insert (Pack of 2) offers precise water flow control for most Marquis Spa models. Made from durable acrylic and plastic, these inserts ensure reliable, long-lasting performance with easy, no-assembly installation. Perfect for spa owners seeking seamless waterfall and neck valve operation, backed by strong customer satisfaction.

## Description

Marquis Spa 1 Inch On/Off Neck And Waterfall Valve Insert. MRQ350-6326 / 350-6326 You will receive 1 item High Quality that's made to last!!

Review: Great part, slow shipping. - Took almost 4 days to get to my door, but that's not the fault of the product. I've only owned it for 10 minutes, but my water feature (waterfalls) in my MasterSpa Twilight 8.2 now can shut off and on correctly! This is the proper diverter valve insert for most MasterSpa features. This will not fit the actual jet diverter valves.
Review: Perfect fit for Catalina Nantucket Spa - Fit my Catalina Nantucket spa waterfall feature perfectly.

## Features

- High Quality thats made to last!!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B2K5NWPC |
| Assembly Required | No |
| Best Sellers Rank | #74,566 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #886 in Pool & Spa Replacement Parts |
| Brand | Hot Tub Classic parts |
| Color | White |
| Customer Reviews | 4.4 4.4 out of 5 stars (70) |
| Item Weight | 1.44 ounces |
| Item model number | 1 |
| Manufacturer | Hot Tub Classic parts |
| Material | Acrylic, Plastic |
| Product Dimensions | 64.9"L x 64.9"W x 1"H |
| Shape | Round |
| UPC | 378482869454 |

## Product Details

- **Brand:** Hot Tub Classic parts
- **Color:** White
- **Item Weight:** 0.04 Kilograms
- **Material:** Acrylic, Plastic
- **Product Dimensions:** 64.9"L x 64.9"W x 1"H

## Images

![Hot Tub 1 Inch On/Off Neck and Waterfall Valve Insert Compatible with Most Marquis Spa 350-6326, Pack of 2 - Image 1](https://m.media-amazon.com/images/I/31IsIvKJVWL.jpg)
![Hot Tub 1 Inch On/Off Neck and Waterfall Valve Insert Compatible with Most Marquis Spa 350-6326, Pack of 2 - Image 2](https://m.media-amazon.com/images/I/418XkMV3k8L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great part, slow shipping.
*by M***H on October 2, 2025*

Took almost 4 days to get to my door, but that's not the fault of the product. I've only owned it for 10 minutes, but my water feature (waterfalls) in my MasterSpa Twilight 8.2 now can shut off and on correctly! This is the proper diverter valve insert for most MasterSpa features. This will not fit the actual jet diverter valves.

### ⭐⭐⭐⭐⭐ Perfect fit for Catalina Nantucket Spa
*by J***I on November 10, 2025*

Fit my Catalina Nantucket spa waterfall feature perfectly.

### ⭐⭐⭐⭐⭐ As expected
*by A***S on August 26, 2025*

works as expected. Do wish they would come up with a better option than a glued on rubber pad…

## Frequently Bought Together

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

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**Shop now:** [https://www.desertcart.jp/products/535719804-hot-tub-1-inch-on-off-neck-and-waterfall-valve](https://www.desertcart.jp/products/535719804-hot-tub-1-inch-on-off-neck-and-waterfall-valve)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-04*