The lightweight, easily handled Smith+Clamp is designed to shut off high pressure leaks. Its exclusive pilot pin makes it possible to locate pit-hole leaks in piping, even if they can’t be seen.
So simple and sensible is the Smith+Clamp design that it can be installed by a blindfolded person… certainly in darkness or on a pipeline submersed in water or oil.
Since the point of the Smith+Clamp cone is centered exactly on the leak, a minimum of force is required to shut-off the leak. For example, a 1/8” diameter hole is 0.012 square inches in area. At a pipeline pressure of 1000 psig only 12 pounds of force is needed to push the cone into the leak.
In this example, the pipe wall is roughly corroded over an area of 3 square inches surrounding the hole. This is by no means an unusual condition but it is very difficult for the ordinary clamp because it will require over 3000 pounds of force to shut off this same leak.
A. Pilot pin (1/16” dia. stainless steel wire) goes down through center of force screw and cone, locates hole, guides cone point (D) to trouble spot.
B. Steel packing force-screw. Turned with wrench, it forces point of cone into leaking hole. Additional wrenching pressure flattens cone into flat disc shape.
C. Thrust washer. Permits force-screw (B) to turn without rotating cone.
D. Pointed cone serves as leak packing. Standard cone is Buna-N. Other packings available on application.
* Pressure rating up to 2000 psig working pressure, depending upon leak area and temperature.
