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United Valve – Repair, Modification & Testing

100,000 Valve Service Orders and Counting

1969 Farrel 192″ VTL Time Lapse Video

Superior Valve Services Since 1961

Through alliances and partnerships with 28 of the world’s top valve manufacturers, United Valve provides factory authorized valve modifications and repair services to a broad spectrum of distributors and end-users. Our 60,000 sq. ft. facility is located in Houston, Texas, in the heart of the Texas refining and petrochemical belt.

United Valve – About Us – Company HistoryOur shop is equipped with state of the art machining, welding, pressure testing and non-destructive evaluation equipment. From X-ray radiography to CNC machining equipment, United Valve is vertically integrated to handle virtually any type of valve service in-house, with work performed by an experienced staff of technicians and craftsmen. Four overhead bridge cranes with a 25’ hook height enable us to handle valves up to 30 tons.

United Valve History


Valve Repair

United Valve employs experienced valve service technicians that can diagnose and perform industrial valve repair of virtually all types and sizes including gate, globe, check & ball valves. A vertically integrated shop environment allows us to routinely perform operations that other valve service companies have to out-source. All United Valve field service technicians have received basic and advanced safety training through programs administered by the Greater Houston Area Safety Council.

In Shop Valve Repair Field Service Valve Repair

Valve Modification

United Valve performs many different types of valve modifications and being in business since 1961 we have seen it all. We have five CNC machine tools as well as numerous manual machines which allows us to rapidly machine valve trim components of any size, out of any material. Cryogenic valve modification of standard valves are one of our specialties. We have produced hundreds of valves for low temperature applications. As far as valve modifications go, if you can dream it…

Learn About Valve Modification Services

Valve Testing

As part of our complete valve engineering package, we operate a state-of-the-art valve fire testing facility. The bunkered enclosure allows us to perform fire testing in accordance to API, ISO or customer specifications. The actual testing is controlled and monitored in a separate control room that is equipped with custom fire test control software and monitored by video cameras with digital recording capability.

NDE Valve Testing Engineering Valve Testing

OEM Authorizations

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United Valve News

Flowserve Announces Authorized Edward(TM) Valve Repair and Service Agreement with United Valve

July 24, 2015

Flowserve Announces Authorized Edward(TM) Valve Repair and Service Agreement with United Valve of Houston, Texas By GlobeNewswire,  July 16, 2015, 04:23:00 PM EDT DALLAS, July 16, 2015 – Flowserve Corporation (NYSE:FLS), a leading provider of flow control products and services … Continue reading

Criteria for Evaluating Industrial Valve Repair and Valve Modification Companies

March 20, 2013

Total valve replacement can be expensive and time-consuming. In-field industrial valve repair and modification resumes operations in the shortest time and at the lowest expense. The following seven criteria are essential to choosing an industrial valve repair company that will … Continue reading

New Valve Modification Standard Published

February 6, 2012

The manufacturer’s Standardization Society (MSS) has recently published Standard Practice SP-141, “Multi-Turn and Check Valve Modifications”, which details standard procedures for the most common new valve modifications. As chairman of  MSS Committee 310, which created the document, I am pleased with … Continue reading

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