---
product_id: 13024914
title: "Oatey 43927 4-inch PVC Flapper with O-Ring"
price: "S$46"
currency: SGD
in_stock: true
reviews_count: 8
url: https://www.desertcart.sg/products/13024914-oatey-43927-4-inch-pvc-flapper-with-o-ring
store_origin: SG
region: Singapore
---

# Secure O-ring seal Durable PVC construction 4-inch precision fit Oatey 43927 4-inch PVC Flapper with O-Ring

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

## Summary

> 🔧 Seal the deal with Oatey’s fail-proof flapper!

## Quick Answers

- **What is this?** Oatey 43927 4-inch PVC Flapper with O-Ring
- **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/13024914-oatey-43927-4-inch-pvc-flapper-with-o-ring)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Legacy:** Backed by Oatey’s century-long reputation, a must-have for any serious plumbing professional.
- • **Durable PVC Build:** Crafted from high-quality polyvinyl chloride for long-lasting resistance against corrosion and wear.
- • **Easy Installation:** Solvent weld compatible for quick, professional-grade plumbing setups without hassle.
- • **Precision 4-inch Fit:** Engineered for seamless integration with standard backwater valves, ensuring a perfect seal every time.
- • **Reliable O-Ring Seal:** Advanced O-ring design guarantees a watertight closure, preventing costly backflow issues.

## Overview

The Oatey 43927 4-inch PVC Flapper with O-Ring is a precision-engineered plumbing accessory designed to prevent backflow in sewage systems. Made from durable PVC and featuring a secure O-ring seal, it fits standard backwater valves and offers easy solvent weld installation. Trusted by professionals for over 100 years, this flapper ensures reliable, long-lasting performance in critical plumbing applications.

## Description

Product Description Oatey Backwater Valves are designed as a sewage check valve to prevent pumped water from flowing back into the basin. Made of PVC or ABS plastic, backwater valve can be solvent welded to piping. Oatey products have earned the trus to plumbing professionals for over 100 years. From the Manufacturer Oatey Backwater Valves are designed as a sewage check valve to prevent pumped water from flowing back into the basin. Assembly includes threaded cover to allow for access and valve flapper which seals closed while not in use. Made of PVC or ABS plastic, backwater valve can be solvent welded to piping. Oatey Backwater Valves can accommodate access sleeves made of Schedule 40 pipe.

Review: Worked well for me - Fit well in an NDS 4" backwater valve
Review: Larger than 4” - The actual size is larger than 4”. So whatever the project/fix, make sure about the size first.

## Features

- Backwater Accessories
- 4-inch PVC flapper with o-ring
- For use with backwater valves
- Flapper seals valve closed while not in use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Oatey |
| Part Number | 43927 |
| Item Weight | 2.4 ounces |
| Product Dimensions | 10 x 7 x 7 inches |
| Item model number | 43927 |
| Is Discontinued By Manufacturer | No |
| Size | 4 in. |
| Color | White |
| Material | Polyvinyl Chloride |
| Item Package Quantity | 1 |
| Measurement System | inch |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![Oatey 43927 4-inch PVC Flapper with O-Ring - Image 1](https://m.media-amazon.com/images/I/51eTFf8cm0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked well for me
*by M***T on April 25, 2025*

Fit well in an NDS 4" backwater valve

### ⭐⭐⭐ Larger than 4”
*by W***R on February 26, 2026*

The actual size is larger than 4”. So whatever the project/fix, make sure about the size first.

### ⭐⭐⭐⭐⭐ Fits as it should
*by E***N on July 28, 2024*

Cheaper to replace than replacing whole device.

## Frequently Bought Together

- Oatey Oatey 43927 4-inch PVC Flapper with O-Ring
- Oatey 43924 White PVC Backwater Flapper with O Ring

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sg/products/13024914-oatey-43927-4-inch-pvc-flapper-with-o-ring](https://www.desertcart.sg/products/13024914-oatey-43927-4-inch-pvc-flapper-with-o-ring)

---

*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-07-08*