---
product_id: 38311953
title: "Watts Premier Replacement Sensor Valve Kit for 500800 500805 HWRS-WH"
brand: "watts premier"
price: "25091 kr"
currency: ISK
in_stock: true
category: "Watts Premier"
url: https://www.desertcart.is/products/38311953-watts-premier-replacement-sensor-valve-kit-for-500800-500805-hwrs
store_origin: IS
region: Iceland
---

# Tool-free, quick install with included fittings Precision 12" dual supply lines Auto-closes at 98°F for instant hot water Watts Premier Replacement Sensor Valve Kit for 500800 500805 HWRS-WH

**Brand:** watts premier
**Price:** 25091 kr
**Availability:** ✅ In Stock

## Summary

> 🔥 Upgrade your flow, never wait to glow! ⚡

## Quick Answers

- **What is this?** Watts Premier Replacement Sensor Valve Kit for 500800 500805 HWRS-WH by watts premier
- **How much does it cost?** 25091 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/38311953-watts-premier-replacement-sensor-valve-kit-for-500800-500805-hwrs)

## Best For

- watts premier enthusiasts

## Why This Product

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

## Key Features

- • **Effortless DIY Upgrade:** Includes all fittings and mounting screws for a seamless, no-extra-parts installation.
- • **Seamless Compatibility:** Exclusively designed for Watts 500800, 500805 & HWRS-WH recirculation systems—no guesswork.
- • **Indoor-Only Reliability:** Built tough for indoor tank water heaters, ensuring long-lasting performance without outdoor exposure risks.
- • **Optimized Water Efficiency:** Closes precisely at 98°F, reducing water waste and energy consumption.
- • **Instant Hot Water, Zero Wait:** Sensor valve activates at cooling point, pushing cold water back to heater for immediate warmth.

## Overview

The Watts Premier Replacement Sensor Valve Kit is a precision-engineered component for Watts Hot Water Recirculation Systems (models 500800, 500805, HWRS-WH). Featuring dual 12" supply lines and easy-to-install fittings, it automatically recirculates cooled water back to the heater and closes at 98°F to deliver instant hot water, saving time, water, and energy. Designed exclusively for indoor use with standard tank water heaters, this OEM kit guarantees reliable performance and effortless integration.

## Description

Designed for use on branched hot water lines coming from the water heater or at the furthest point in the home, the Watts Premier Replacement Sensor Valve Kit ensures that hot water gets to all areas of the home. It is exclusively compatible with Watts Hot Water Recirculation Systems, models 500800, 500805 and HWRS-WH. It is not designed to be used with a dedicated return line to the water heater.As an essential part of the hot water recirculating system, the sensor valve enhances the efficiency of your hot water system by opening when the water on the hot water side cools, effectively pushing the cool water back to the water heater. Once the hot water line reaches 98°F, the valve closes, ensuring that you have immediate access to hot water while reducing the wait time. This not only improves comfort but also helps in conserving water.This product is equipped with two 12" supply lines, two reducing fittings from 1/2" FTP to 3/8" MPT, and two mounting screws. With a simple design that makes it easy to install and replace, requiring no additional components or specialized tools, this Sensor Valve Kit can also be installed parallel to existing sensor valves to increase the speed of water recirculation.The Watts Premier Sensor Valve Kit is compatible with all types of pipes, adding to its versatility. However, it is designed for indoor use only on standard tank water heaters in residential buildings. It is not suitable for use with tankless water heaters or for outdoor applications.

## Features

- REPLACEMENT SENSOR VALVE KIT: Designed for use on branched hot water lines coming from the water heater or at the furthest point in the home, the Watts Premier Replacement Sensor Valve Kit ensures that hot water gets to all areas of the home. It is exclusively compatible with Watts Hot Water Recirculation Systems, models 500800, 500805 and HWRS-WH. It is not designed to be used with a dedicated return line to the water heater.
- INTEGRAL COMPONENT: The sensor valve is an integral part of the hot water recirculating system; it opens when the water on the hot water side cools, pushes the cool water back to the water heater, and closes when the hot water line hits 98 degrees F, reducing wait time for hot water.
- SIMPLE DESIGN: Equipped with two 12" supply lines, two reducing fittings from 1/2" FTP to 3/8" MPT, and two mounting screws, this Sensor Valve Kit has a simple design that makes it easy to install and replace, requiring no additional components. It can also be installed parallel to existing sensor valves to increase the speed of water recirculation.
- INDOOR ONLY: Suitable for use with all types of pipes, this sensor valve is meant only for indoor use on standard tank water heaters in residential buildings; it is not compatible with tankless water haters or for outdoor applications.
- EVERY DROP COUNTS: Water. It's in our name and close to our hearts. Since 1874, Watts Water Technologies has been delivering innovative technologies that make the world's most precious resource safe and accessible. Everything we design is made to keep the Earth's most precious resource safer, cleaner, and more useful for our customers. Our family of brands offers one of the most varied product lines in the world, with world-class, water-related solutions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004Q04AWO |
| Best Sellers Rank | #15,208 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #19 in Water Pump Accessories |
| Brand | Watts Premier |
| Brand Name | Watts Premier |
| Connector Type | Threaded |
| Customer Reviews | 4.5 out of 5 stars 2,095 Reviews |
| Exterior Finish | Silver |
| Global Trade Identification Number | 00098268256987 |
| Included Components | sensor valve, fitting, hoses |
| Inlet Connection Size | 0.38 inches |
| Inlet Connection Type | National Pipe Tapered |
| Item Dimensions | 12 x 2 x 2 inches |
| Item Highlight | Includes Two 12" Supply Lines Two 1/2" Ftp to 3/8" Mpt Fittings Mounting Screws for Indoor Tank Heaters Only OEM |
| Item Type Name | For Watts Hot Water Recirculating Pump |
| Item Weight | 13.6 ounces |
| Item dimensions L x W x H | 12 x 2 x 2 inches |
| Manufacturer | Watts |
| Manufacturer Part Number | WP596816 |
| Manufacturer Warranty Description | Watts (the "Company") warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Model Number | WP596816 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 5 |
| Number of Ports | 2 |
| Outlet Connection Size | 0.5 inches |
| Outlet Connection Type | National Pipe Tapered |
| Set Name | Premier Sensor Valve Kit (5 Piece) |
| Size | Sensor Valve Kit |
| Specification Met | Meets Watts 500800 Hot Water Recirculating Pump system specifications |
| Thread Size | 0.5 inches, 0.375 inches |
| Thread Type | Threaded |
| UPC | 098268256987 |
| Unit Count | 1 Count |
| Valve Type | hot water supply line |

## Product Details

- **Brand:** Watts Premier
- **Exterior Finish:** Silver
- **Inlet Connection Size:** 0.38 inches
- **Inlet Connection Type:** National Pipe Tapered
- **Item dimensions L x W x H:** 12 x 2 x 2 inches
- **Material:** Stainless Steel
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.5 inches
- **Outlet Connection Type:** National Pipe Tapered
- **Specification Met:** Meets Watts 500800 Hot Water Recirculating Pump system specifications

## Images

![Watts Premier Replacement Sensor Valve Kit for 500800 500805 HWRS-WH - Image 1](https://m.media-amazon.com/images/I/61c1HEGpibL.jpg)

## Available Options

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

## Questions & Answers

**Q: So what this does is move the hot water through the pipes constantly, not just when you need it? Seems like an energy suck. Is it?**
A: If you run this all the time you will likely increase your water heating costs significantly as you are turning your pipes into a big radiant heater.  You can use the built in timer to only have it come on at set periods, but this will only work if you have a very fixed schedule.  I attacked this another way.  I plugged the unit into a TP-Link HS110 Smart plug that is Alexa controlled.  I can just say turn on hot water pump or turn off hot water pump when I want to control it.  But that was not good enough for me.  I found that if this pump ran for four minutes it would give me hot water at the distant shower that I wanted, so I did the following.  I wrote a routine to turn on the pump, wait four minutes and then turn it off.  While I can run this by voice, I bought the new Amazon Alexa Button, they are about $14 for a two pack.  The button is battery operated and communicates to another Alexa device.  Just before I take a shower I push the button and within four minutes the water will be hot without having to run water.

**Q: If the pump is on, and the water is hot, the sensor valve closes, right?  Isn't the pump trying to push water against a totally closed line?**
A: The pump just stirs water in the pump housing. It's not a positive displacement pump, so it has no problem doing that. But most of the time the control valve allows a trickle of hot water to flow, just enough to keep the faucet temperature at a constant 100°.

**Q: can i used without the sensor valve**
A: The control valve keeps the water temperature at the faucet at 100° by slowing the flow to a trickle. If you don't use the control valve, be prepared for the hot water to circulate at full speed and the temperature at the faucet to go up to whatever your water heater is set for.

**Q: Does this shut down the flow completely once temperature is reached or will it continue to trickle water into the cold water line?**
A: The valve allows a slow flow of water back through the cold water line, enough to maintain the temperature at the faucet at about 100°F. If you let the hot water run, the temperature at the faucet goes over 100°F, and the valve shuts off the back flow through the cold water line. After the faucet is shut off, the water in the valve will cool to below 100°F, and the valve will crack open and allow some flow to keep the water warm. The valve does not bang open and shut. It opens more or less, as needed to keep the water warm at the faucet. It doesn't depend on the temperature set at the water heater, except that if the water is very hot, obviously it takes less to keep the water warm at the faucet. The valve accomplishes this automatically.

## Frequently Bought Together

- Watts Premier Replacement Sensor Valve Kit for 500800, 500805, HWRS-WH Watts Instant Hot Water Recirculation System, Two 12" Supply Lines, Two Reduced Fittings 1/2" FTP - 3/8" MPT, Two Mounting Screws
- WP596816 Sensor Valve Kit Fit for watts premier 500800&500805 & grundfos up comfort Instant Hot Water Recirculating Pump System, Include Two 12" Supply Lines & Two 1/2" x 3/8" Reduced Fittings

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-11-15*