VALVE MAGAZINE Winter 2024

Rising-Rotating Plug Valve Repair & Service

The raised faces of a DN 24 wedge-type plug valve are machined on a horizontal boring mill.

The internal tapered seating areas of a large wedge-type plug valve body are prepared for machining on a large boring mill.

The seating areas of a DN 30, wedge-type plug valve are weld repaired, prior to machining and grinding.

Weld repairs are often required on these plug-type metallic valves. The United Valve welding department is led by our in-house welding engineer and features both manual and mechanical welding processes. All of our 200+ welding procedures are created and qualified in accordance with ASME Section IX, as well as approved by many, even stricter end-user specifications.

The largest boring mills in our machine tool inventory can machine plug valve components of any size or material, while our grinding machinery is capable of handling valves of up to NPS 24 for both internal and external grinding. The machining department features 20-ton cranes, while the adjacent assembly area is served by a 40-ton crane.

United Valve is fully equipped to handle repairs and modifications on all types and brands of rising-rotating metallic plug valves. These valves are mainstays of Coker-valve block service as well as many other critical fluid control applications, such as overhead vapor lines and ethylene cracking units. We offer in-shop or field-service repair on these valves and their associated actuators.

9916 Gulf Freeway, Houston, Texas 77034-1045 Phone 713/944-9852 888/715-5093 Fax 713/944-5964

Visit us online at: www.unitedvalve.com