---
product_id: 162227048
title: "Watts Boiler Combination Fill Valve and Backflow Preventer B911T - 1 Each"
brand: "watts"
price: "321178CFA"
currency: XOF
in_stock: true
reviews_count: 13
category: "Watts"
url: https://www.desertcart.sn/products/162227048-watts-boiler-combination-fill-valve-and-backflow-preventer-b911t-1
store_origin: SN
region: Senegal
---

# High capacity fill valve 1/2 inch threaded precision fit Bronze body for durability Watts Boiler Combination Fill Valve and Backflow Preventer B911T - 1 Each

**Brand:** watts
**Price:** 321178CFA
**Availability:** ✅ In Stock

## Summary

> 🚿 Elevate your boiler game with Watts’ all-in-one water control wizard!

## Quick Answers

- **What is this?** Watts Boiler Combination Fill Valve and Backflow Preventer B911T - 1 Each by watts
- **How much does it cost?** 321178CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/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

- • **Built to Last Bronze:** Robust bronze construction ensures long-term reliability and corrosion resistance
- • **Effortless Maintenance:** Engineered for easy service access—no hassle, no downtime
- • **Dual-Function Powerhouse:** Combines backflow prevention and pressure reduction in one sleek unit
- • **Plug & Play Installation:** Pre-assembled design means you’re up and running in under 30 minutes
- • **Performance You Can Trust:** Meets ASSE 1012 standards for safety and efficiency

## Overview

The Watts Boiler Combination Fill Valve and Backflow Preventer B911T is a 1/2 inch threaded, bronze-bodied valve that integrates water feeding and backflow prevention. Pre-assembled for quick installation and designed for easy servicing, it delivers high capacity performance while meeting ASSE 1012 safety standards—perfect for professional-grade boiler maintenance.

## Description

1/2" NPT. Combo Back Flow Preventer & Pressure Reducing Valve Replaces 911 0386463

Review: Works as should. - Works as should. Just beware. They come in 1/2 right up to 1 inch.
Review: Plumbing Supplies - This dual service water pressure and back flow valve is exceptional. The installation is super easy, it took me less than 30 mins to add to my hot water boiler. Highly recommend it, and the cost is better than most plumbing suppply warehouses.

## 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 |
|---------------|-------|
| Brand | Watts |
| Exterior Finish | Bronze |
| Inlet Connection Size | 0.5 inches |
| Inlet Connection Type | threaded |
| Item Dimensions | 8.5 x 2 x 5.25 inches |
| Item dimensions L x W x H | 8.5 x 2 x 5.25 inches |
| Material | Bronze |
| Material Type | Bronze |
| Outlet Connection Size | 0.5 inches |
| Outlet Connection Type | Threaded |
| Specification Met | ASSE 1012 |

## 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)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works as should.
*by F***D on October 15, 2025*

Works as should. Just beware. They come in 1/2 right up to 1 inch.

### ⭐⭐⭐⭐⭐ Plumbing Supplies
*by D***I on January 26, 2025*

This dual service water pressure and back flow valve is exceptional. The installation is super easy, it took me less than 30 mins to add to my hot water boiler. Highly recommend it, and the cost is better than most plumbing suppply warehouses.

### ⭐⭐⭐⭐⭐ Great replacement piece.
*by P***K on September 6, 2025*

Works as it should.

## 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.sn/products/162227048-watts-boiler-combination-fill-valve-and-backflow-preventer-b911t-1](https://www.desertcart.sn/products/162227048-watts-boiler-combination-fill-valve-and-backflow-preventer-b911t-1)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-08-14*