Showing 168 Companies
Coast of Mezzate, Bergamo, Italy
FLUITEK ORSENIGO VALVES started out ball valves manufacturing for the Oil and Gas industry in 1993 with the Orsenigo brand.
Genoa, Liguria , Italy
Flour Valve designs tailored Ball Valves API 6D in the petrochemical market. We meet your specific design requirements, offering high-quality Italian, production concentrated stock, timely application procedures, a short time and the immediate customer service.
Rho, Lombardy, Italy
We are pleased to introduce ourselves as an italian manufacturer of cast steel valves and strainer for chemical and petrochemical industries. Since its establishment in 1953, FIRSA has developed its production and experience to satisfy the last requirements in terms of quality.
Pray, Biella , Italy
ETV is a ball valve manufacturer located in the north of Italy. We propose customized solutions in order to accomplish all the requests! We have an internal team of engineers, ready to delop new projects and a sales department, with a huge knowledge of the market
Grignasco , Novara , Italy
Erreesse offers a reliable combination of Made in Italy, short delivery and API accredited production range with On/Off, Control, Top and Side entry ball valves with Split, Fully Welded and Modular body. Complete in-house testing area with hyperbaric chambers and testing benches suitable for gas testing at ambient, cryogenic and high temperatures.
Cortemaggiore, Piacenza, Italy
DVG Automation is a global leader in manufacturing and sale Automated Process Valves solutions. Our product line covers all Pneumatic, Hydraulic & Electrohydraulic Actuator Solutions to operate any kind of Quarter Turn and Linear Valves . As part of the GIVA Group, we offer the expertise & experience to bring you a cost effective solutions.
Carpaneto Piacentino, Piacenza, Italy
Douglas Chero was established in 1974 to meet the demand for high quality forged valves in the petroleum refining and production plants, offshore oil and gas fields, power industry, fertilizer, chemical and desalination plants all over the world.
Fiorenzuola d'Arda, Piacenza, Italy
Biffi is one of the world’s leading manufacturers of valve actuators. With an engineering pedigree of 60 years plus and a truly global presence, the company is also the partner of choice for operators seeking not just a comprehensive range of standard actuators, but the finest customized solutions.
Albano Sant'Alessandro, Bergamo, Italy
Bonney Forge, founded in 1876, initially forged and finished hardware for horse drawn wagons. The company’s product line, all requiring metal working and machining, evolved during the first half of the 20th century. The products included hand tools, military hardware and commercial forgings.
Colico , Lecco, Italy
ATV provides a full range of valves and actuators for the most demanding applications in the offshore industry, such as deep and ultradeep water, HIPPS, HPHT, highly corrosive services. Paramount attention to materials selection in line with the latest metallurgical developements and in-house state of art welding, machining and testing facilities.
Knowledge Grid
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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.