---
product_id: 162227048
title: "Watts Boiler Combination Fill Valve and Backflow Preventer B911T - 1 Each"
brand: "watts"
price: "€ 440.64"
currency: EUR
in_stock: true
category: "Watts"
url: https://www.desertcart.sk/products/162227048-watts-boiler-combination-fill-valve-and-backflow-preventer-b911t-1
store_origin: SK
region: Slovakia
---

# 1/2 inch threaded precision fit Pre-assembled for easy installation Integrated backflow prevention Watts Boiler Combination Fill Valve and Backflow Preventer B911T - 1 Each

**Brand:** watts
**Price:** € 440.64
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your plumbing game with Watts’ all-in-one powerhouse!

## Quick Answers

- **What is this?** Watts Boiler Combination Fill Valve and Backflow Preventer B911T - 1 Each by watts
- **How much does it cost?** € 440.64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/162227048-watts-boiler-combination-fill-valve-and-backflow-preventer-b911t-1)

## Best For

- watts enthusiasts

## Why This Product

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

## Key Features

- • **Bronze Durability:** Robust bronze body built to last and resist corrosion
- • **Plug & Play Ready:** Pre-assembled design means zero hassle, instant setup
- • **High Capacity Flow:** Engineered for superior water fill efficiency under pressure
- • **Service-Friendly Access:** Designed for quick maintenance without system downtime
- • **Dual-Function Powerhouse:** Combines backflow preventer and fill valve in one sleek unit

## Overview

The Watts B911T Combination Fill Valve and Backflow Preventer is a premium 1/2 inch threaded unit featuring a durable bronze body. It integrates a Model 9D backflow preventer and Model 1156F feed water pressure regulator into a pre-assembled, easy-to-install valve that ensures high capacity water fill and reliable backflow protection, meeting ASSE 1012 standards.

## Description

Consists of a Model 9D backflow preventer and Model 1156F feed water pressure regulator in one pre-assembled unit

## Features

- 1/2 inch B911-M3 Watts threaded combination water feeder and backflow preventer
- Bronze Body
- Pre-Assembled
- Easy Service Accessibility
- High Capacity Fill Valve

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00093DU5K |
| Best Sellers Rank | #107,827 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3,185 in Pipe Fittings |
| Brand Name | Watts |
| Connector Type | Union |
| Customer Reviews | 4.7 4.7 out of 5 stars (99) |
| Exterior Finish | Bronze |
| Inlet Connection Size | 0.5 inches |
| Inlet Connection Type | threaded |
| Item Dimensions | 8.5 x 2 x 5.25 inches |
| Manufacturer | WATTS |
| Manufacturer Part Number | 386463 |
| Material Type | Bronze |
| Model Number | B911T-M3 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Number of Ports | 3 |
| Outlet Connection Size | 0.5 inches |
| Outlet Connection Type | Threaded |
| Size | 1/2 inch |
| Specification Met | ASSE 1012 |
| Thread Size | 1/2 inch |
| Thread Type | NPT |
| UPC | 098268918533 |
| Unit Count | 1 Count |
| Valve Type | Dual Check with Atmospheric Vent |

## Product Details

- **Brand:** Watts
- **Exterior Finish:** Bronze
- **Inlet Connection Size:** 0.5 inches
- **Inlet Connection Type:** threaded
- **Item dimensions L x W x H:** 8.5 x 2 x 5.25 inches
- **Material:** Bronze
- **Number of Ports:** 3
- **Outlet Connection Size:** 0.5 inches
- **Outlet Connection Type:** Threaded
- **Specification Met:** ASSE 1012

## Images

![Watts Boiler Combination Fill Valve and Backflow Preventer B911T - 1 Each - Image 1](https://m.media-amazon.com/images/I/51aEBfP+hkL.jpg)
![Watts Boiler Combination Fill Valve and Backflow Preventer B911T - 1 Each - Image 2](https://m.media-amazon.com/images/I/31jnWQAqSRL.jpg)

## Frequently Bought Together

- WATTS 1/2 inch B911-M3 threaded combination water feeder and backflow preventer
- Taco 400-4 1/8-Inch-NPT Float Air Hy-Vent
- Watts 0342691 30 PSI Pressure Relief Valve, Bronze, 3/4" 335 M2-030

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**Shop now:** [https://www.desertcart.sk/products/162227048-watts-boiler-combination-fill-valve-and-backflow-preventer-b911t-1](https://www.desertcart.sk/products/162227048-watts-boiler-combination-fill-valve-and-backflow-preventer-b911t-1)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-09-07*