---
product_id: 390029744
title: "EZ-FLO 20431LF Swing Check Valve, 2 inch IPS, Brass"
brand: "eastman"
price: "NT$7379"
currency: TWD
in_stock: true
reviews_count: 3
url: https://www.desertcart.tw/products/390029744-ez-flo-20431lf-swing-check-valve-2-inch-ips-brass
store_origin: TW
region: Taiwan
---

# Lead-free potable water safe 2-inch IPS connection 200 PSI max pressure EZ-FLO 20431LF Swing Check Valve, 2 inch IPS, Brass

**Brand:** eastman
**Price:** NT$7379
**Availability:** ✅ In Stock

## Summary

> 🛠️ Keep your water flowing forward—no backflow, no compromises!

## Quick Answers

- **What is this?** EZ-FLO 20431LF Swing Check Valve, 2 inch IPS, Brass by eastman
- **How much does it cost?** NT$7379 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/390029744-ez-flo-20431lf-swing-check-valve-2-inch-ips-brass)

## Best For

- eastman enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Installation:** 2-inch IPS connection ensures a quick, secure fit—no hassle, no fuss.
- • **Premium Brass Durability:** Built to last with high-quality brass that resists corrosion and wear.
- • **Versatile Pressure Handling:** Handles up to 200 PSI, perfect for wells, boilers, and potable water setups.
- • **Health-First Safety Standards:** Lead-free design meets NSF and UPC certifications for worry-free water safety.
- • **Engineered for Ultimate Backflow Protection:** Safeguard your water systems with precision-engineered swing check technology.

## Overview

The EZ-FLO 20431LF Swing Check Valve is a robust 2-inch brass valve designed to prevent backflow in water systems. Rated for up to 200 PSI, it’s lead-free and certified safe for potable water, making it ideal for wells, boilers, and household water supply installations. Its durable brass construction and easy IPS installation deliver reliable, long-term performance.

## Description

Introducing the Eastman Swing Check Valve, a masterpiece of engineering designed to provide unparalleled reliability for your home water systems. Crafted from robust and durable brass, this check valve ensures a long-lasting solution to prevent the undesirable backflow of fluids into your water supply. This valve is essential for maintaining the integrity of well and boiler systems, safeguarding your potable water from contamination. With a solid 2-inch IPS connection, this straight pattern check valve boasts a working pressure of 125 PSI to 200 Water, Oil, and Gas (WOG), offering peace of mind through its exceptional product safety standards. The Eastman Swing Check Valve is lead-free, meeting all regulatory requirements for safe water supply installations.

## Features

- EASTMAN BRASS SWING CHECK VALVE: The Eastman swing check valve features a mechanism specifically engineered as a backflow preventer, protecting your water systems from contamination and damage
- DURABLE: This Swing Check Valve is crafted from high-quality brass, ensuring longevity and reliability as a backflow preventer in water supply systems
- VERSATILE: With a working pressure of 125 PSI to 200 WOG, this check valve is perfect for a variety of uses including wells, boiler systems, and potable water installations
- EASY TO INSTALL: Designed with a 2-inch IPS connection, this swing check valve ensures a secure and straightforward installation process
- SAFETY: Lead-free and suitable for all potable water supply installations, this valve prioritizes your health and safety

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | EZ-FLO |
| Part number | 20431LF |
| Item Weight | 1.17 Kilograms |
| Product Dimensions | 10.69 x 10.69 x 10.49 cm; 1.17 kg |
| Item model number | 20431LF |
| Size | 2 inch IPS |
| Color | Brass |
| Style | Swing |
| Material | Brass |
| Item Package Quantity | 1 |
| Maximum Pressure | 200 Pound per Square Inch |
| Measurement System | inch |
| Specification met | NSF, ASSE, UPC, Lead-Free |
| Included components | valve |
| Batteries Required? | No |

## Product Details

- **Material:** Brass
- **Brand:** Eastman
- **Item dimensions L x W x H:** 10.7 x 10.7 x 10.5 centimeters
- **Exterior finish:** Brass
- **Inlet connection size:** 2 Inches

## Images

![EZ-FLO 20431LF Swing Check Valve, 2 inch IPS, Brass - Image 1](https://m.media-amazon.com/images/I/61+p8-2dFmL.jpg)
![EZ-FLO 20431LF Swing Check Valve, 2 inch IPS, Brass - Image 2](https://m.media-amazon.com/images/I/71q8PHOryJL.jpg)
![EZ-FLO 20431LF Swing Check Valve, 2 inch IPS, Brass - Image 3](https://m.media-amazon.com/images/I/71HexBKuZwL.jpg)
![EZ-FLO 20431LF Swing Check Valve, 2 inch IPS, Brass - Image 4](https://m.media-amazon.com/images/I/61c72En0UJL.jpg)
![EZ-FLO 20431LF Swing Check Valve, 2 inch IPS, Brass - Image 5](https://m.media-amazon.com/images/I/714yHzto2bL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is this for 1 1/2" pipe or is it for a quantity of 1 for a 1/2" pipe?**
A: 1-1/2 inch IPS, not a quantity of one for 1/2 inch.

**Q: Can this be used with hose thread?**
A: These are pipe thread which is slightly different from hose thread. However there are hose adapters out there to make the transition

**Q: Does the swing valve have a spring too or just free floating?  Needed for lake pump but would be horizontal, so would it still work?**
A: The swing check valve does have a spring, but should not be an issue for the application you have described.

**Q: This says it is threaded as fip...is this compatible with male npt threads?**
A: Yes,  FIP and NPT are interchangeable.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Well booster pump replacment
  

*by A***R on Reviewed in the United States on 21 October 2020*

I needed to replace my Goulds 2HP booster pump. Turns out the new pumps no longer include a check valve. Replaced the pump, upgraded unions and piping and added Cycle Stop Valve, high pressure booster switch and 10 gallon tank kit. I can now maintain 75 PSI at 4BR, 4 bathroom house with 25GPM and run irrigation system at the same time.

### ⭐ 







  
  
    Leaking after 4 months
  

*by M***W on Reviewed in the United States on 18 July 2019*

This valve looked fine when it was installed.Installed this to replace a valve after twenty years of use. This one is leaking back flow after 4 months.

### ⭐⭐⭐⭐⭐ 







  
  
    That it works properly
  

*by A***R on Reviewed in the United States on 4 August 2019*

Works just the way it should

## Frequently Bought Together

- Eastman Brass Swing Check Valve, 2 Inch IPS, Brass Plumbing Fitting, 20431LF
- DAN SPEED 2" NPT Female 316 Stainless Steel Full Port Ball Valve Vinyl Handle WOG1000
- Megairon 2" x 2" NPT Male Threaded Hex Nipple,Stainless Steel 304 Quick Coupler Pipe Fitting

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**Shop now:** [https://www.desertcart.tw/products/390029744-ez-flo-20431lf-swing-check-valve-2-inch-ips-brass](https://www.desertcart.tw/products/390029744-ez-flo-20431lf-swing-check-valve-2-inch-ips-brass)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-25*