On-line Leak Sealing
On Piping and Components


    • Clamps designed to ASME Pressure Vessel Code
    • 24/7/365 engineering support
    • Over 40 years of experience
    • Clamps designed with cost in mind
    • Design packages, including drawings, calculations and dimensional data available upon request

Engineered Clamp

A faulty steam trap allowed water hammer to exert forces 5-10 times greater than normal on this system, causing a flange gasket failure on this valve.

Pressure: ~100PSIG
Temperature: ~225F

Install an engineered flange clamp, with injection valves. Inject with sealant.

Plug Enclosure Clamp
Plug Enclosure Clamp
Valve Enclosure
Flanged Connection Enclosure
90 Enclosure
Weld Enclosure with Strong Back
T Enclosure With Strong Back
Coupling Enclosure

Valve Packing Injection

Deteriorated valve packing allowed steam to leak out of the stem of this high pressure super heater spray valve

Pressure: 3,800PSIG
Temperature: 750F
Service: Steam

Drill into the packing gland, install an injection valve and inject with sealant

Wire Wrap

Wire wraps are another option for flange gasket leak repair. This solution involves wrapping wire around the gap between two flanges. Injection valves are either drilled and tapped into the flange or installed on special injection studs that can be used to replace existing studs.

The wire forms a barrier that prevents sealant from escaping, allowing us to inject the space between the old gasket and the wire, essentially forming a new gasket.


Peening is a versatile leak sealing technique that utilizes an air chisel with a custom tip, used to fold metal into gaps and create a seal.

This can be a stand alone repair or can be used to contain a sealant injection.

Peening is an effective technique but due to the fact that it is destructive in nature, it is generally considered as a last resort.

Line Kill

Line kills are typically performed on valves that no longer seat properly and leak-by. The process requires sealant to be injected upstream of the closed valve. The pressure of the system forces the sealant up against the valve and seals the leak, eliminating leak- by and stopping flow or “killing” the line.

Injection can be done downstream of the valve in certain circumstances. In this case, the sealant builds up behind the valve, the valve is then cracked, allowing the sealant to travel up stream. Lastly, the valve is closed and the line is killed.

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