Passing Valve

Valves that are leaking internally (passing valve) present a significant safety issue for Gas Distribution operators that need to rely on these valves for isolation. A passing valve can pose a risk to personnel, the safe operation of the pipeline itself, and, in the case of an emergency, the environment and public. It is often necessary to isolate passing valves to enable them to be removed, repaired, or maintained.

TDW offers a full range of tools and services to help Gas Distribution operators safely and easily prepare for valve removal, repair or replacement.

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TDW offers Gas Distribution market owners and operators hot tapping and plugging (HT&P) solutions for a wide array of pipeline defects and maintenance challenges from dents to corrosion to valve failure. TDW equipment and services are engineered for safety and efficiency, allowing operators to better protect their employees and the surrounding community. 

The HT&P process incorporates a low pressure pipeline fitting, valve, tapping machine, and isolation equipment – all working together to provide a safe and proven isolation solution. Once the area of pipeline that needs work has been safely isolated and evacuated, the line modification can be performed. 

TDW isolation technology plays a critical role in this process, and a temporary bypass allows work to be performed without the need to stop product flow. The TDW STOPPLE® Train isolation system, for example, uses double block and bleed technology to help increase efficiency and safety during pipeline modification. This approach to line isolation, which only requires a single pipeline tap, reduces costs associated with fittings, valves, welding, and inspection services. The bleed port affixed on the line ensures that any product that bypasses the first seal is contained and evacuated through the bleed port, which helps operators better protect people and the environment.

Whether operators are purchasing equipment to perform their own HT&P jobs or turn to TDW to execute the service for them, they can rely on the company’s broad line of equipment and consumables. TDW application engineers are recognized industry experts, ready to assist operators through each project phase – from start to finish. To meet regional needs quickly and efficiently, TDW maintains equipment and consumables in service centers around the globe.

TDW also offers RES-Q® Wrap and Steel Repair Sleeves, quick, simple solutions that allow operators to keep their pipeline operational and within code.

To prepare for future challenges, operators have the option of creating an Emergency Pipeline Repair System (EPRS), which equips them to take a proactive approach to pipeline emergencies. Working with the TDW team, operators will have the planning and resources in place to repair and recommission their pipelines — and restore product flow — in the shortest time possible.