A Triple Offset Butterfly Valves, also known as triple eccentric valves, are a versatile valve often used when in the harshest conditions of critical process environments. They are cost efficient, and alower torque option (easier to automate), than alternative style metal seated valves.
Standard TOSV design features include zero leakage with bi-directional shut off to API 598, a field replaceable seat and seal ring for reduced maintenance costs, non-galling design to enable a wide variety of marterial options, with options for live loaded packing and arduous duty bearing protectors.
Triple offsets are generally used in applications similar to gate valves, where a metal seat is required, and tight shutoff and/or quarter turn actuation is desired. Applications include:
The Solent & Pratt Triple Offset Segment Valve utilizes the well established valve geometry where the shaft is offset from the body in two directions (1) and (2), whilst the disc is a segment taken from a cone where the apex is offset from the center line of the valve (3). The disc (segment) of the valve houses a field replaceable metal laminate seal whilst the field replaceable seat ring is housed in the body of the valve.
Due to the valve geometry there is no interference or rubbing between seat and seal as the valve strokes through it’s full 90°.
The main difference between a double and triple offset valve is the number of offset shafts; a triple offset valve has three.
Two of the offsets 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 butterfly valve is used in similar industries as the double but more demanding applications.
At Curtiss Wright Valve Division, you’ll find various products suited to a wide range of industrial applications. Our range of valves includes Butterfly Valves, Changeover Valves, Check Valves, Control Valves, Directional Control Valves, Engineering Services, Engineering Software, Gate Valves, Globe Valves, Plug Valves, Pressure Relief Valves, Strainers and Instrumentation Equipment.
If you require any further information on any product, such as specification sheets, you can find them in the related documents or in the library.
We stock industry-leading brands, including:
Our sales team is happy to answer any queries and provide expert advice; you can find a list of sales offices organized by region and product types here.
Alternatively, to contact us via the website, complete the form here.
