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All Categories > Check Valves and Flow Limiting Devices > Item # 443  
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Item # 443, 443 Flow Fuse

List Price $35.00

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Limits flow when surge detected.


Series Designation

443 Series


Flow Fuse

Maximum Rated Pressure

6000 psi

Inlet Port Size

1/4 in. FNPT

Outlet Port Size

1/4 in. MNPT

Outlet Pressure Rating

6000 psi

Flow Coefficient (Cv)

0.05 (0.062 in. orifice)

Minimum Temperature

-100 ºF

Body Material

Anodized Aluminum

Internal Materials



50 g

Overall Length

2.1 Inch

Hex Diameter

7/8 Inch

Repair Kit/Service Items


Special Notes

Nominal flow rate to shut: 80 SCFM at 5000 psi, 55 SCFM at 2500 psi


Model 443 Flow Fuse & Model 796 Restrictor Operation & Maintenance Manual
(PDF, 7KB)

Equations for Flow Through Orifices
(PDF, 3KB)

Technical Bulletin
(DOC, 117KB)

Tank Fill Time with Flow Limiting Orifice
(DOC, 77KB)

 Repair Kit for 443 Flow Fuse 

Repair Kits
Repair Kit for 443

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