Our Products
Our product range start from ½” and extends to 48” valves with pressure ratings ASME class 150 Lbs. to 2500 Lbs. and UNI EN/DIN PN 6 to PN 100.
Because we care about our employees, customers, shareholders, and the communities in which we live and work, Island Gas and Oil Service is committed to strategic giving and employee involvement. Volunteerism is a big part of our corporate culture, and the spirit and generosity of our employees make it happen. Wherever we are around the globe, Island Gas and Oil Service employees can be found donating time and expertise to help people and organizations in need.
- Supply Valves
- Ball Valves
- Butterfly Valves
- Globe Valves
- Check Valves
Across oil and gas disciplines, around the world Island Gas and Oil Service designs, develops, qualifies, and manufactures the industry’s broadest Services & types portfolio of valves. Our unmatched experience has allowed us to create a seamless process that integrates industry best practices with comprehensive support and services. With a commitment to quality, Island Gas and Oil Service backs its valves with robust life-of-field programs, ensuring customers receive comprehensive support and a sustaining partnership with us. Our valves can be purchased directly from Island Gas and Oil Service through our distributor network, or as part of integrated drilling, completion, and production systems.
Also we have are owner specification which are matching with all the biggest companies in oil and gas Many different used in worldwide. The general the most typical steam systems, valves, globe types of manual valves are industrial applications following article will cover the mechanism and function of these valves used in such as Ball Valves, Butterfly Valves ,Gate Valves and Check Valves.
Ball valves offer very good shut-off capabilities. A simple quarter-turn (90°) completely opens or closes the valve. This characteristic minimizes valve operation time and decreases the likelihood of leakage due to wear from the gland seal.
Ball valves can be divided into two categories: reduced bore and full bore. In reduced bore valves, the valve opening is smaller than the diameter of the piping; in full bore valves, the valve opening is the same size as the diameter of the piping. Full bore ball valves are often valued because they minimize the pressure drop across the valve.
Balls valves are usually only recommended for use in the fully open or fully closed position. They are not suited to regulate flow by being kept partially open because ball valves make use of a ring-shaped soft valve seat. When used in the partially open position, pressure is applied to only a portion of the valve seat, which can cause it to deform. If the valve seat deforms, its sealing properties are impaired and it will leak as a result.
In butterfly valves, the flow is regulated through a disc-type element held in place in the center of the valve by a rod. Similar to ball valves, valve operation time is short because the valving element is simply rotated a quarter turn (90°) to open or close the passageway. Butterfly valves are characterized by their simple construction, lightness in weight, and compact design. Their face-to-face dimension is often extremely small, making the pressure drop across a butterfly valve much smaller than globe valves. Materials used for the valving element and sealing can limit their applications at higher temperatures or with certain types of fluids. Butterfly valves are often used on applications for water and air, and in applications with large pipe diameters.
The globe valve is suitable for use on a wide variety of applications, from flow rate control to open/close operation.
In this type of valve, flow rate control is determined not by the size of the opening in the valve seat, but rather by the lift of the valve plug (the distance the valve plug is from the valve seat). One feature of globe valves is that even if used in the partially open position, there is less risk of damage to the valve seat or valve plug by the fluid than with other types of manual valves. Among the various configurations available, needle type globe valves are particularly well suited for flow rate control. Another point to consider about globe valves is that the pressure drop across the valve is greater than that of many other types of valves because the passageway is S-shaped. Valve operation time is also longer because the valve stem must be turned several times in order to open and close the valve, and this may eventually cause leakage of the gland seal (packing). Furthermore, care must be taken not to turn the valve shaft too far because there is a possibility it could damage the seating surface
Check valves are generally installed in pipelines to prevent backflow. A check valve is basically a one-way valve, in which the flow can run freely one way, but if the flow turns the valve will close to protect the piping, other valves, pumps etc