Why it is called as triple offset butterfly valve?
On the other hand, the triple offset butterfly valve is called as such because it has three offsets located in three different positions. These can be best understood if you check out the image below. The center of the disc and seat. In the centerline of the bore and attached to the stem.
What is a double offset valve?
Also known as high-performance butterfly valves, double-offset valves feature two offset stems that offer especially long life due to reduced contact between valve discs and seats. This type of valve can be especially helpful if your operations involve higher pressures and particulate fluids.
What does double offset mean?
In plumbing, two changes of direction which are in succession in a continuous pipe.
What is a triple offset valve?
What exactly is Triple Offset Technology. A Triple Offset Butterfly Valve has 3 separate offsets. Two of the offsets apply to the location of the shaft in respect to the centerline of the bore and the centerline of the disc/seat sealing surfaces. The third offset is the design in the axis of the seat cone angle.
What is double offset butterfly valve?
Double offset butterfly valve is popularly known as a high-performance butterfly valve and has two offsets from the valve body’s center: The shaft axis is offset from the disc’s seat and body seal’s centerline, and. The shaft axis is eccentric to the pipeline’s/valve’s center line.
What are offset valves?
Zero offset butterfly valves are used for liquid and gas applications up to 400 degrees Fahrenheit and 250 PSI. The stem and disc of these valves are centered in the valve seat which is centered in the body of the valve. This valve can handle chemicals, coatings, food, some solids, and abrasive applications.
What is the difference between double offset and triple offset butterfly valves?
Two are placed in a similar position to the double offset butterfly valve, while the third offset is the geometry of the seating surface, creating a type of cone shape of the disc and seat. The triple offset valve is used in similar industries as the double offset butterfly valve, but in more demanding applications.
How does a triple offset valve work?
A Triple Offset Butterfly Valve has 3 separate offsets. Two of the offsets apply to the location of the shaft in respect to the centerline of the bore and the centerline of the disc/seat sealing surfaces. The sealing components are each machined into an offset conical profile resulting in a right-angled cone.
What is offset butterfly valve?
Double Offset Butterfly Valve This popular valve is also known as a high performance butterfly valve. This valve has two stems offset from the center. This creates a cam action during the application’s process. 1st offset: The axis of the shaft is behind the centerline of the sealing point of the disc to seat.
What is a triple offset valve (Tov)?
What is a Triple Offset Butterfly Valve Also known as the triple eccentric valve, the triple offset valve (TOV) has been around for more than 50 years. Initially designed to service water applications as a shutoff valve, TOV is now considered as a top choice for many critical process applications.
What is a double offset butterfly valve?
Double Offset butterfly valves are also known as high performance butterfly valves. The ‘Double Offset’ refers to the position of the shaft within the valve, and therefore the opening and closing action of the disc. The shaft slightly moved back from the centreline of the valve, and also out of the centreline…
What is double offset?
double offset. In plumbing, two changes of direction which are in succession in a continuous pipe.