Model 443  6,000 PSI  Flow Fuse

Model 443 6,000 PSI Flow Fuse

  • Product Code: AE443
  • Availability: In Stock
  • Price:$43.00

  • 5 or more $38.70
  • 10 or more $34.40
  • 16 or more $33.11

AE Model Component Operation and Maintenance Sheets -Click to follow

Model 443  6,000 PSI  Flow Fuse



Both the model 443 flow fuse and restrictor model 796 serve as safety device that prevent high flow rates in the event high pressure lines break or become disconnected.

With the Model 443 flow fuse normal flow rates pass unrestricted. When flow substantially exceeds the normal rate an active element in the fuse closes. A slight leakage in the shut position permits equalizing of charging lines and automatic reopening of the fuse in the event an excessive surge shuts the valve.

The model 796 flow restrictor uses a small orifice but no active element to limit flow.  Its advantages are simplicity and the insurance that the flow will not be shut off due to unusual surges. Disadvantages are some restriction in normal flow. and some continuing flow in the event of line breakage. In some cases the flow restriction can be advantage.

For example it will sllow fill times of small tanks preventing 'hot' fills. In the event of line breakage some noise and line whip would still occur. However flow rate and whip will be reduced to about 1/10 (10%) that of an unrestricted line.


• Maximum rated pressure 6000 PSI (40 MPa)
• Nominal flow rate to shut ... 80 SCFM at 5000 PSI
                                          55 SCFM at 2500 PSI
                                          (can be adjusted)
• Size - 7/8" hex by 2.1" long
• Ports 1/4" female NPT in, 1/4' male NPT out

• Minimum rated pressure 6000 PSI (40 MPa)
• Nominal orifice size .047" diameter (Other sizes available)
• Maximum llow (with 5000 PSI across restrictor) 90 SCFM
• Time to fill 50 cu.ft., 2250 PSI tank with 2250 PSI upstream of restrictor about 3 minutes
• Sze ........... 7/8" hex by 1.5" long
• Ports One 1/4" male NPT one 1/4" female NPT


• High pressure air filling station hoses
• Hydraulic lift lines
• Other hydraulic or gas flexible lines
• Flow limiters tor tank filling
• Flow limiters for pneumatic operators

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