---
product_id: 25143632
title: "VBS Series PVC Vacuum Breaker Valve, For Corrosive and Ultra-Pure Liquids, , 1-1/2\" NPT Female"
brand: "plast-o-matic"
price: "R13298"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/25143632-vbs-series-pvc-vacuum-breaker-valve-for-corrosive-and-ultra
store_origin: ZA
region: South Africa
---

# Corrosive & Ultra-Pure 1-1/2" NPT Prevents Siphoning VBS Series PVC Vacuum Breaker Valve, For Corrosive and Ultra-Pure Liquids, , 1-1/2" NPT Female

**Brand:** plast-o-matic
**Price:** R13298
**Availability:** ✅ In Stock

## Summary

> 💡 Secure Your Flow, Protect Your Future!

## Quick Answers

- **What is this?** VBS Series PVC Vacuum Breaker Valve, For Corrosive and Ultra-Pure Liquids, , 1-1/2" NPT Female by plast-o-matic
- **How much does it cost?** R13298 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/25143632-vbs-series-pvc-vacuum-breaker-valve-for-corrosive-and-ultra)

## Best For

- plast-o-matic enthusiasts

## Why This Product

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

## Key Features

- • **Safety First:** Eliminates siphoning of hazardous fluids, ensuring a secure environment.
- • **Protect Your Assets:** Engineered to safeguard enclosed tanks from collapse during draining.
- • **Eco-Conscious Design:** Normally-closed mechanism minimizes fugitive emissions.
- • **Versatile Applications:** Ideal for corrosive and ultra-pure liquid handling.
- • **Sensitive Instrument Protection:** Prevents vacuum damage to delicate instruments and filters.

## Overview

The VBS Series PVC Vacuum Breaker Valve is expertly crafted to protect enclosed tanks from structural damage during draining, effectively eliminating siphoning of dangerous fluids. Its normally-closed design prevents fugitive emissions, making it perfect for applications involving corrosive or ultra-pure liquids.

## Description

Compact, self-closing vacuum breakers protect against hazards, damage and financial losses caused by vacuum. Designed to protect enclosed tanks from collapse or structural damage during draining. Eliminates siphoning of dangerous fluids. Prevents vacuum which can cause damage to sensitive instruments and filters. Insurance against replacement of damaged expensive equipment, avoids critical system downtime. Patented diaphragm design assures dependable, repetitive, bubbletight sealing in VBM; PFA encapsulated spring and special poppet provide identical performance in VBS design. For corrosive or ultra-pure liquid applications. VBS Vacuum Breakers feature a corrosion resistant PFA encapsulated spring which acts on a poppet seal that neither sticks nor chatters. Maximum working pressure is 100 PSI at 75 degree F. Threaded connections are standard on all models. Socket end connectors are available on all sizes and materials except PTFE VB. Outlet connection is shipped with standard dust cap. Cap is removable for applications where pipe connection is desired due to location, potential hazard, etc. The outlet connection is identical to the connection on the system side of the valve. These Vacuum Breakers will begin to break a vacuum at approximately 2" of mercury (1.0 PSI or 0.07 Bar negative pressure). Full vacuum is 29" of mercury. For applications either draining or pumping from enclosed tanks, the tanks must be able to withstand much more than 2" of mercury of vacuum, as illustrated in the chart below. The chart is based upon a 3.5 times safety factor, and it clearly shows that as the rate of liquid flow leaving the tank increases, the resulting vacuum in the tank also increases. Vacuum Breakers can be mounted in any position since they are self-sealing and do not rely on gravity to operate; however, upright is preferred.

## Features

- Designed to protect enclosed tanks from collapse or structural damage during draining
- Eliminates siphoning of dangerous fluids
- Prevents vacuum which can cause damage to sensitive instruments and filters
- Normally-closed design prevents fugitive emissions from leaving system
- For corrosive or ultra-pure liquid applications

## Images

![VBS Series PVC Vacuum Breaker Valve, For Corrosive and Ultra-Pure Liquids, , 1-1/2" NPT Female - Image 1](https://m.media-amazon.com/images/I/81AMFAqPsZL.jpg)
![VBS Series PVC Vacuum Breaker Valve, For Corrosive and Ultra-Pure Liquids, , 1-1/2" NPT Female - Image 2](https://m.media-amazon.com/images/I/81PfuAXfM0L.jpg)

## Available Options

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

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**Shop now:** [https://www.desertcart.co.za/products/25143632-vbs-series-pvc-vacuum-breaker-valve-for-corrosive-and-ultra](https://www.desertcart.co.za/products/25143632-vbs-series-pvc-vacuum-breaker-valve-for-corrosive-and-ultra)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-15*