Microjet Vacuum Breaker 15mm – Anti-Siphon Valve for Irrigation Systems (MB180)

The Microjet Vacuum Breaker 15mm (MB180) is an anti-siphon device installed in irrigation systems to prevent backflow and protect the water supply from contamination caused by negative pressure or siphon effect. It is fitted in the irrigation line to automatically vent air when vacuum conditions are detected, breaking any siphoning action.

• Application: Anti-siphon and backflow prevention in irrigation systems
• Size: 15mm
• SKU: MB180
• Made by Microjet Irrigation Systems, South Africa
• Suitable for: Drip, microjet, and sprinkler irrigation systems

Key Features

• Prevents siphoning of water back into the supply line or main
• Protects potable water supply from irrigation water contamination
• Automatically operates when negative pressure is detected
• 15mm connection size for standard irrigation pipe and fittings
• Simple, reliable mechanical operation — no power required

Typical Applications

• Irrigation systems connected to municipal water supply
• Drip and microjet irrigation lines requiring backflow protection
• Systems where elevation changes create siphon risk
• Complying with local authority requirements for backflow prevention

Technical Specifications

What's Included

• 1 x Microjet Vacuum Breaker 15mm (MB180)

Please note: Installation fittings are not included. Ensure correct orientation during installation — vacuum breakers are directional.

Installation & Compatibility Notes

Install the vacuum breaker in the correct flow direction as indicated on the body. Position above the highest irrigation point where possible for optimal anti-siphon protection. Use appropriate fittings to connect to 15mm pipework. Contact Zisabo if unsure whether a vacuum breaker is required for your system.

Warranty & Support

Manufactured by Microjet Irrigation Systems, South Africa. Supplied with applicable manufacturer warranty subject to correct installation.

Related products: Microjet Inline Filters, Polyprop Threaded Fittings, Full Flow Fittings