Track an order
Click here to link to our UPS Tracking page

800.255.1032 tel         206.824.3308 tel     206.824.2150 fax
Filtration Line Card
Aviation Line Card
Biodiesel Line Card
Media Line Card
Pipeline Equipment Line Card
Print all DRS Line Cards

Resale Certificate
Split+Sleeve Smith+Clamp FlangeRepair Split+RepairEll Flange+RepairRing Weld+Cap
Weld+Ends Plidco+Flange Clamp+Ring Clamp+Sleeve Riser-Type WeldEnds Hot-Tapping+Saddle
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.

Verify your pipe outside diameter (OD). ANSI nominal sizes listed for reference only.

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.

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.
API Pipe Size
 (in.)
Outside Diameter
 (in.)
1-˝ 1.900
2 2.375
2-˝ 2.875
3 3.500
4 4.500
5 5.563
6 6.625
7 7.925
8 8.625
10 10.750
12 12.750
14 14.000
16 16.000
18 18.000
20 20.000
22 22.000
24 24.000
26 26.000
28 28.000
30 30.000
32 32.000
34 34.000
36 36.000
38 38.000
40 40.000
42 42.000
48 48.000

Home | Feedback| Contents | Search | News | Products

Filters | Suppliers |Our Products | Gloves | Oil-Water Separator | Service Model | Slim Line

Tools | Cla-Val Valves | Pipe Handling | Cathodic Protection | Pipeline Equipment | PLIDCO Pipeline Repair | Poly-Pigs | OCV Valve Function | Filtration

Send mail to webmaster@drshannonco.com with questions or comments about this web site.
Copyright © 2006   D. R. Shannon Company
Last modified: May 20, 2008