Model 4772 Self-Closing Vacuum Breaker - EWFM

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Home » Products » Land Loading Arms & Unloading Arms » Loading Arm Valves » Model 4772 Self-Closing Vacuum Breaker

Model 4772 Self-Closing Vacuum Breaker

The Model 4772 Self-Closing Vacuum Breaker enables rapid, safe liquid evacuation from pipelines by breaking vacuum automatically, ensuring efficient loading and protecting equipment.

Material

Aluminium, Stainless Steel

The Model 4772 Self-Closing Vacuum Breaker allows air into the line when the ball valve closes, breaking vacuum for rapid liquid flow. Compatible with ISO 5211 connections, it is available for DN 1.5” and DN 3.75” ball valves. Fully automatic, it enhances loading efficiency, safeguards equipment, and ensures reliable, maintenance-free operation.

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Self-Closing Vacuum Breaker
Self-Closing Vacuum Breaker
Self-Closing Vacuum Breaker
Labelled components of the Model 4772 Vacuum Breaker
Labelled components of the Model 4772 Vacuum Breaker
Outer body of the Model 4772 Vacuum Breaker
Outer body of the Model 4772 Vacuum Breaker
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Description

The Model 4772 Self-Closing Vacuum Breaker, also known as the “Dead Man,” is designed to ensure rapid and safe evacuation of liquids from pipelines during tank truck or rail car loading operations. This device allows air into the line when the ball valve is closed, breaking the vacuum and enabling product to flow quickly and efficiently into the receiving tank.

The Model 4772 is a self-closing unit, ensuring automatic operation without manual intervention. It is compatible with ISO 5211 connections and is available for DN 1.5” and DN 3.75” ball valves, providing versatile integration with standard industrial piping systems. Engineered for reliability, this Model 4772 Self-Closing Vacuum Breaker improves loading efficiency while maintaining safety and protecting equipment from potential vacuum-related damage.

Contact information:

Tel: +44 (0) 1763 248 650

Email: sales@ewfm.co.uk

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Additional Specifications

Construction
Body – Aluminium alloy
Plug – Aluminium alloy
Operating stem – AISI 316L
Valve fixing screws – AISI 304
Plug screws – AISI 304
Spring fixing screw – AISI 304
Stop screw – AISI 304

Operation
This self-closing device is suitable for installation on an ISO 5211 connection

Option
This is available for Dn 1.5″ or Dn 3.75″ ball valves

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