Showing 168 Companies
Peabody, Massachusetts, United States of America
Harmonic Drive LLC designs and manufactures high precision gearheads, actuators, and gear component sets. We offer standard and custom engineered products to provide high precision, high performance solutions to meet our customer's mission critical applications. Harmonic Drive is a registered trademark of Harmonic Drive LLC.
Sugar Land, Texas, United States of America
Founded in 1950, HAM-LET Group specializes in the design, development production and marketing of high quality instrumentation valves and fittings in a wide variety of materials for high pressure, high temperature and vaccum applications. An accent on quality combined with ongoing research and development.
Boston, Massachusetts, United States of America
Goodwin first opened its doors in Boston more than 100 years ago, launching a legacy of unprecedented legal services. Now located in the city’s innovation district at Fan Pier, our Boston office continues to be a driving force in New England and important part of Goodwin’s global reach with particular impact on Boston’s growing technology...
Houston, Texas, United States of America
For more than a decade, Global Valve and Controls has provided engineered valves and flow controls to the Oil/Petrochemical, Energy/Power, Agriculture and Food industries. In that time, GVC has constantly strived to design and produce valves and controls offering exceptional reliability, low emissions, easy maintenance and lowest total cost in...
Raymond, New Hampshire, United States of America
Gemini Valve is a United States manufacturer of exceptionally reliable automated, manual and customized valves. Our Solutions Team professionals specialize in matching the best valve solution for your application from our proven line of compact, reliable ball valves. If your application requires special considerations, Gemini's engineered...
Clifton Springs, New York, United States of America
G.W. LISK manufactures custom engineered Solenoid, Solenoid Valves, LVDT's and Flame Arrestors for use in subsea, downhole or topsided applications. In addition, Lisk manufactures control devices for diesel emission applications such as E/H butterfly valves, EGR valves and dosing valves.
Irving, Texas, United States of America
For the biggest challenges of fluid motion control, customers worldwide rely on the engineering, project management and service expertise of Flowserve. We deliver more than the most complete portfolio of reliable valves, pumps and seals available.
Oakhurst, Oklahoma, United States of America
Flowell Corporation is a leading manufacturer in the flow measurement industry. Established in July of 1993, Flowell Corporation consistently maintains its position as an industry leader in the manufacturing of flow measurement products.
Orchard Park, New York, United States of America
Flow Safe is a manufacturer of high performance pilot operated, spring style safety relief, and liquid surge relief valves with all components sourced completely in the USA. We focus on soft seated zero leakage technology and are a global solution valve provider for overpressure protection on difficult applications. We define high performance.
Schriever, Louisiana, United States of America
Flow Line Valve and Controls L.L.C. was incorporated in the summer of 1999. The vision for the company was to create an American made resilient seated butterfly valve that would perform exceptionally well in the demanding process applications of the next century.
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The difficult and challenging operating conditions posed by the oil and gas industry have constantly kept the equipment suppliers and production personnel on high alert. Unique and extreme conditions are present for the service of valves in the industry. Adding to this is the remote location of valve services, bringing to surface another set of peculiar obstructions. It is extremely important that valves are engineered properly for smooth and reliable operations. With the advancement of technology, performance expectations are higher than ever and myriad layers of operations need to be addressed.
Frequently Asked Questions: Valves
Valves find application in all the segments of the oil and gas industry- upstream, midstream and downstream. The main objective of a valve is to control the flow of the medium through a system. Valves are used to start, stop the flow, modulate and control the flow of the fluid, change the direction of the flow, regulate the pressure of the process and protect the piping system. Through effective use of valves, safety and efficient operation of the processes is ensured.
In the upstream segment, valves control the flow of crude oil and natural gas from high-pressure injection systems to choke valves and BOPs installed at the top of wells. In the midstream segment, long pipelines require compressors along the way to keep the product moving, and valves are asked to protect equipment while offering minimal restriction to the flow. When it comes to the downstream sector, the valve requirements include higher pressure designs and metal-seating technology and metallurgies to accommodate the temperatures at which modern refineries operate.
Multi-turn valves are also referred to as Linear Motion Valves. Under this category, the different types of valves are: Gate, Globe, Pinch, Diaphragm and the Needle valve. They are employed to accommodate a diverse range of flow medium. Their objective is to minimize turbulence, erosion and pressure drop.
The refinery segments employing valves are atmospheric distillation, vacuum distillation, hydro treating, catalytic reforming, fluidized catalytic cracking, alkylation, hydro cracking, delayed coking, sulfur recovery, visbreaking, gasification, cube treating and gas plants. For these applications, the ideal type of valves differs widely. However, generally they include multi-torn valves, HF alkylation valves, quarter-turn valves and flow reversal protection valves.
The Control Valves are particularly designed to ensure accurate proportioning control of flow. They automatically vary the rate of flow based on signals received from sensing devices in a continuous process.
The most commonly used valves across the oil and gas industry are: Gate, Globe, Check, Ball, Butterfly, Strainers, Control, Plug and Safety valve.
For the upstream sector, Gate Valves produced with higher alloy materials, are the most relevant and on some occasions, Ball Valves. Their usage is due to their strong resistance to corrosion. Isolation Valves play a crucial role in midstream applications to obstruct the flow during maintenance. As far as the downstream sector is concerned, the valve design solutions are diverse owing to various levels of harsh environment.
They are also known as Rotary Valves. They form the most versatile selection of valves with categories like Plug, Ball and Butterfly valve. The objective is to provide protection against erosion damage, solids that accumulate on the sealing surfaces and in cavities, and residual freeze up, which can prevent operation and cause leakage from packing wear.
The Check Valves, under the category of Self- Actuated Valves, are particularly designed to prevent backflows. When the fluid flows in the desired direction, it allows the valves to open up and the valves are closed during backflow.
Various critical factors need to be considered while selecting a valve such as, the substance to be handled and the required flow rate, the requirement that the valve controls in the manner demanded by the service conditions, capacity of the valve to withstand maximum working pressure and temperature, resistance to corrosion and erosion, actuator and maintenance requirements.