---
product_id: 202818381
title: "Hotun Dry Trap Tundish for Small Unvented Water Heaters Black 15 x 22mm"
brand: "hotun"
price: "¥11986"
currency: JPY
in_stock: true
reviews_count: 1
url: https://www.desertcart.jp/products/202818381-hotun-dry-trap-tundish-for-small-unvented-water-heaters-black
store_origin: JP
region: Japan
---

# 12L/min flow rate Easy installation 10-year guarantee Hotun Dry Trap Tundish for Small Unvented Water Heaters Black 15 x 22mm

**Brand:** hotun
**Price:** ¥11986
**Availability:** ✅ In Stock

## Summary

> 🚿 Upgrade your water heater’s safety with silent, sleek efficiency!

## Quick Answers

- **What is this?** Hotun Dry Trap Tundish for Small Unvented Water Heaters Black 15 x 22mm by hotun
- **How much does it cost?** ¥11986 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/202818381-hotun-dry-trap-tundish-for-small-unvented-water-heaters-black)

## Best For

- hotun enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Backed by a 10-year guarantee, this tundish is the durable, worry-free upgrade your water system deserves.
- • **Sleek & Discreet:** Matte black finish blends into modern plumbing setups, eliminating the need for external discharge pipes.
- • **Compact & Compatible:** Designed for unvented water heaters under 15L, fitting perfectly with major boiler brands for hassle-free integration.
- • **Odour-Free Compliance:** Seamlessly connects PRV discharge to internal drains with a non-return odour seal—no foul smells, no fuss.
- • **Touch-Check Technology:** Quickly identify historical PRV discharges by touch without dismantling—smart maintenance made simple.

## Overview

The Hotun Dry Trap Tundish (15 x 22mm, black) is a cutting-edge plumbing component designed for unvented water heaters under 15 litres. It enables compliant, odour-free connection of the temperature and pressure relief valve discharge directly to internal waste pipes, eliminating external discharge. Featuring a non-return odour seal, easy installation, and compatibility with major manufacturers, it offers a 12L/min flow rate and comes with a 10-year guarantee for long-term reliability.

## Description

The revolutionary hotun dry trap tundish allows the Temperature & Pressure relief valve to connect directly to the internal waste or soil pipe eliminating the need for external discharge. The non-return odour seal within the hotun dry trap Tundish stops any foul odours from entering up through the Tundish and back into the building. The hotun dry trap tundish allows for easy identification of the historical PRV discharge by touch without the need to dismantle the connection. The hotun has been approved for use by several big-name boiler and water heater manufacturers and with it’s 10 year guarantee it is the perfect solution to any hot water system.  Features: * Dry Trap Tundish * Allows the PRV discharge to be compliantly connected to drain without odours * Eliminates the need for external discharge * Connects directly to internal waste or soil pipe * Approved for use by many major manufacturers * Suitable for Unvented Water Heaters (Under 15 litres) * Simple, easy to install solution * No odours * Available in black and white * Flow rate of 12L/min * 10 Year Guarantee (Registration Required)  Hotun Shield Not suitable for use with this Tundish. If you are looking to install the hotun hiflo (separate listing) in conjunction with a boiler, this is when the shield is recommend. We do not take any responsibility where a hotun tundish has been installed with shield incorrectly so please ask if unsure.

## Features

- Dry Trap Tundish
- Allows the PRV discharge to be compliantly connected to drain without odours
- Suitable for Unvented Water Heaters (Under 15 litres)
- Not suitable for use with shield
- No odours due to the odour seal

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | RA Tech |
| Part Number | HB100C |
| Manufacturer reference | HB100C |
| Size | 15 x 22mm |
| Colour | Black |
| Batteries included? | No |
| Batteries Required? | No |

## Images

![Hotun Dry Trap Tundish for Small Unvented Water Heaters Black 15 x 22mm - Image 1](https://m.media-amazon.com/images/I/61uyuWt96pL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Non return valve stops drain smell.
*by M***R on 30 July 2020*

Easy to install,allows prv to be discharged into internal waste pipes.

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**Shop now:** [https://www.desertcart.jp/products/202818381-hotun-dry-trap-tundish-for-small-unvented-water-heaters-black](https://www.desertcart.jp/products/202818381-hotun-dry-trap-tundish-for-small-unvented-water-heaters-black)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-30*