---
product_id: 466233089
title: "3-1/2 Inch Hot Tub Stand Pipe Cap Compatible with Watkin Hot Spring Spas Filter Standpipe (1,White)"
brand: "hotubjoy"
price: "S$46"
currency: SGD
in_stock: true
reviews_count: 5
category: "Hotubjoy"
url: https://www.desertcart.sg/products/466233089-3-1-2-inch-hot-tub-stand-pipe-cap-compatible
store_origin: SG
region: Singapore
---

# 3.5-inch precision fit Chemical-resistant for spa longevity Reinforced break-resistant plastic 3-1/2 Inch Hot Tub Stand Pipe Cap Compatible with Watkin Hot Spring Spas Filter Standpipe (1,White)

**Brand:** hotubjoy
**Price:** S$46
**Availability:** ✅ In Stock

## Summary

> 🛁 Lock in spa perfection — don’t let your filter float away!

## Quick Answers

- **What is this?** 3-1/2 Inch Hot Tub Stand Pipe Cap Compatible with Watkin Hot Spring Spas Filter Standpipe (1,White) by hotubjoy
- **How much does it cost?** S$46 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/466233089-3-1-2-inch-hot-tub-stand-pipe-cap-compatible)

## Best For

- hotubjoy enthusiasts

## Why This Product

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

## Key Features

- • **Protect Your Pump:** Blocks debris and dirt from entering pipes and harming your hot tub’s inner workings
- • **Durable & Reliable:** Made from reinforced plastic to withstand spa chemicals and wear
- • **Secure Your Spa Filter:** Locks filters firmly to prevent floating and damage
- • **Precision Compatibility:** Perfectly fits 3-1/2 inch Watkin Hot Spring spa standpipes
- • **Cost-Effective Maintenance:** Extends filter life and saves money with a long-lasting, easy-to-install cap

## Overview

The HOTUBJOY 3-1/2 Inch Hot Tub Stand Pipe Cap is a durable, chemical-resistant accessory designed to securely lock spa filters in place on Watkin Hot Spring spas. Its reinforced plastic construction prevents debris intrusion and protects your pump, ensuring longer filter life and hassle-free maintenance.

## Description

HOTUBJOY 3-1/2" Hot Tub Filter Standpipe Caps for Spas

Review: Fit as described
Review: Was a great low cost replacement option.

## Features

- White cap commonly used on the white stand pipe
- Grey cap used on the grey standpipe that holds the silver ion mineral stick
- Caps secures the spa filters in a vertical position
- Standpipe caps are a vital part of your spa filter system
- In order to hold the filter in place,the cap screws onto the top of the filter standpipe
- keep debris,dirt,and other items from floating into the pipes and damaging the pump and inner workings of your hot tub
- Lock your filter down to prevent it floating,and stop items from flowing down the top of the standpipe into your pumps or heater
- Service life longer,save money for you:reinforced and break resistant cap;highly resistant to chemicals commonly found in spa applications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09H6TRC77 |
| Assembly Required | No |
| Brand | HOTUBJOY |
| Colour | White |
| Generic Name | 3-1/2" Cap |
| Item Weight | 50 g |
| Item model number | 3-1/2" Cap |
| Manufacturer | HOTUBJOY |
| Material | Reinforced Plastic |
| Model Name | 3-1/2" Cap |
| Product Dimensions | 43L x 81W x 89H Millimeters |
| Shape | Round |

## Product Details

- **Brand:** HOTUBJOY
- **Colour:** White
- **Material:** Reinforced Plastic
- **Product Dimensions:** 43L x 81W x 89H Millimeters
- **Shape:** Round

## Images

![3-1/2 Inch Hot Tub Stand Pipe Cap Compatible with Watkin Hot Spring Spas Filter Standpipe (1,White) - Image 1](https://m.media-amazon.com/images/I/41ilfykC+JL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by H***. on 18 December 2025*

Fit as described

### ⭐⭐⭐⭐⭐ Review
*by K***G on 28 January 2025*

Was a great low cost replacement option.

### ⭐⭐⭐⭐⭐ Review
*by T***C on 5 September 2025*

It fit our Harmony hot tub well.

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**Shop now:** [https://www.desertcart.sg/products/466233089-3-1-2-inch-hot-tub-stand-pipe-cap-compatible](https://www.desertcart.sg/products/466233089-3-1-2-inch-hot-tub-stand-pipe-cap-compatible)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-19*