About Us

T&W Valve and Machine Co. offers line valve repair services and capabilities that are designed to be the most technically accurate and comprehensive on the market today.

Our Field Machining Division provides a broad range of machining services for our customers in the Power Generation, Refining, Chemical, Petro-Chemical, Pulp and Paper and Process industries. Our diverse and comprehensive experience, coupled with our complete machining capabilities, allow us to provide total project support.

With over 50 years of cumulative in-house experience, we offer proven engineering, management, maintenance and operational insight. T&W Valve is designed to be your single source supplier of repair services, replacement parts, diagnostic evaluations and reliability solutions.

Our services are delivered through our O'Fallon, Il, and Owensboro, Ky. repair centers, as well as through plant-site operations, both of which are staffed by fully qualified technicians and engineers.

Gamma/X-Ray Plugs

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Radiographic & Gamma Plugs, also interchangeably known as Access Hole Plugs, Gamma Plugs, or X-Ray Plugs, are pivotal components utilized in nuclear measurement processes, aligning with the fundamental principles of gamma and X-ray detection. These plugs play a crucial role in sealing access holes during the radiographic inspection of pipe butt welds. This inspection, employing gamma and X-ray radiation sources, ensures a non-destructive evaluation of weld quality and integrity. Particularly vital when the radiographic source is inside the pipe, their use guarantees safety and precision, allowing comprehensive assessments of weld quality while mitigating radiation exposure risks.