Aqua Environment 443 443 Series Flow Fuse 6000 PSI 1/4" NPT Anodized Aluminum Body

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

Typical Applications:

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

Installation

Observe the flow direction noted on the label. The female thread is the inlet and male thread is the outlet on the 443 flow fuse.

Maintenance and repair

No routine maintenance is required. The flow fuse comes adjusted for the flow rates noted above under technical specs. To readjust the flow fuse, turn the adjusting screw in until the ball valve bottoms against the seat. Check for full closure by blowing through the flow fuse. Backing off on the adjusting screw 1.7 to 1.9 turns will provide the above standard shut-off flow rates. Backing off more will proportionately increase the shut-off flow rate and less will decrease it.

For more information, please see Data Sheet