Locates
and stops pit-hole leaks
The lightweight,
easily handled PLIDCO® 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 PLIDCO® Smith+Clamp design that it can be
installed by a blindfolded person…certainly in darkness or on a
pipeline submersed in water or oil.
The pilot pin guides the cone point into the pit-hole. Pressure is then
applied behind cone by a force screw – not by drawing bolts on opposite
side of the pipe. The drawbolt at the bottom of the fitting only holds
the clamp in place. Exerting pressure directly on the cone eliminates danger
of caving in badly corroded pipe. Line pressure need not be reduced during
installation. Available in sizes 1-1/2” through 48”. Special
sizes on application.
Requires much lower bolting pressure
Since
the point of the PLIDCO® 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.
|
