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AIR FUSES

Air Fuses

 

  • Provides Safe Working Conditions for Employees
  • Meets OSHA Standard 29CFR ChXV11 Paragraph 1926.302-b7
    All Hoses (Relating to Power Tools) Exceeding 1/2” Inside Diameter Shall Have a Safety Device at the Source of Supply or Branch Line to Reduce Pressure In the Case of a Hose Failure
  • Provides Automatic Pressure Reduction When a Hose is  Ruptured or Severed, Preventing the Air Hose From Whipping (The Main Flow Is Disrupted by the Internal Piston)
  • Compact Design
  • Tamperproof
  • Automatically Resets After  Failure Correction
  • Low Pressure Drop
  • Pressure Rating: 232 PSI
  • Pressure Drop: 2 PSI to 4.5 PSI at Shut Off Flow
  • Max. Temperature:  175º F 
    If Using at Low Temperature (Below 36°F) Avoid Conditions That Will Cause the Air to Ice Up
  • Construction: Anodized Aluminum Body , Brass Valve and Internals, Stainless Steel Spring

 
Part No.

Size
(NPT In)

MCT60A2891

1/4

MCT60A3891

3/8

MCT60A4891

1/2

MCT60A6891

3/4

MCT60A8891

1

MCT60AB891

1-1/2

 

Guidelines for Typical Installation
The Air Fuse Should Be Installed Directly Between Fixed or Rigid Pipe Work and the Flexible Tube to Protect the Whole Length of the Flexible Tube.  Only Tubing After the Air Fuse is Protected.  The Air Fuse Must be Installed in the Correct Orientation.  Failure to Do This Will Render It Ineffective.  When a Shut Off Valve is Located Before the Air Fuse, the Valve Must be Opened Slowly in Order to Control Initial Air Flow and Avoid Decompression Effects Which May Trip the Air Fuse.

Operation
Air Pressure on Each Side of the Valve is About Equal. Valve Seal is Held Open By a Spring, Thus Allowing Unrestricted Flow.

When a Hose Breaks Air Surge Closes the Valve. A Small Amount of Air Seeps Through the Bleed Hole,  the Valve Remains Closed as Long as Pressure on the Upstream Side is Greater Than Pressure on Downstream Side.  The Bleed Allows Air Pressure to Equalize on Each Side of the Valve. When This Occurs, the Spring Opens the Valve and Full Flow is Restored Automatically


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