The Basics To Know About A Gate Valve
Gate valves are considered to be one of the products that brought about the industrial revolution. While there are a few valve designs like the plug valve and globe valve that have been around longer in the marketplace, the gate valve has dominated the industry for several decades.
The gate valve distinguishes from ball, plug and butterfly valves in that of its closure element which is known as the disc, gate, or obturator. This element rises on the base of a stem or spindle out of the stream and into the valve top, termed the bonnet, by means of multiple turns of the spindle or stem.
Gate valves that open with a straight-line motion are also referred to as multi-turn or linear valves and differentiated from quarter-turn styles, that operate with 90 degrees stem rotation and generally don’t rise.
If you are interested to see gate valves up close and learn more insights of it then make sure to visit the Dutco Tennant LLC exhibit at the ADIPEC 2022. The gate valves that will be exhibited at the event are suitable for Oil & Gas applications.
But before you visit the exhibition, here’s a few basics that you need to learn about gate valves. Keep reading till the end to find out.
Fundamentals of A Gate Valve
Gate valves are available in plenty of varied pressure classes and materials. They are manufactured of forgings, castings or weld-fabricated assemblies, although the most dominant construction is the casting design.
One of the most favoured aspects of gate valves is their capability to fully open and let the flow bore virtually free of friction or encumbrances. Gate valves in an open position offer about the similar level of resistance to flow as a pipe section of the same port size. This is why gate valves are still strongly considered for the purpose of serving blocking or on/off applications.
However, gate valves are generally bad choices for flow control purposes or operating in any orientation aside from fully open or fully closed. If a gate valve is used in a partially open position for throttling or regulating flow then it can result in either damage to the body seat rings or the disc. This happens due to the seating surfaces collapsing against one another in the partially open and turbulence-inducing flow environment.
Externally, a majority of gate valves look somewhat similar. However, internally there are a range of various design possibilities. In most gate valves, there is a body and bonnet that includes a closure element, known as the disc or a gate.
This closure element is connected to a stem that goes through the bonnet of the valve, which ultimately interfaces with an actuator or a handwheel to operate the stem. The pressure that builds around the stem is contained with the help of a packing material which is compressed into a packing area or chamber.
Conclusion
If you are interested in learning more then make sure to visit the Dutco Tennant LLC exhibit at the ADIPEC 2022 where high-quality Gate Valves will be exhibited. You can catch live product demonstrations, insightful conferences and other exciting activities at the event. The exhibition starts from 31st October till 3rd November 2022.