Triple eccentric closing system eliminates deformation and friction in butterfly valves.

Triple eccentric closing system eliminates deformation and friction in butterfly valves.

In triple eccentric butterfly valves, are either laminated or solid metal design. That prevents galling and scratches between the metal seat and the metal disc, due its unique design trough which the only time where the seal comes in contact with the seat is at the point of complete closure.

The firs eccentric is the offset between the shaft center line and the disc trunnion center line. The second one is the offset between the body center line and the disc center line, and the third and most relevant is the eccentric in the sealing. This kind of closing design is essential in applications where bubble-tight shut off is required, resulting in zero leakage performance.

This construction avoids the use of elastomers, typically affected by corrosion, and provides friction free stroking throughout the valve, extending valve’s life time, and reducing -even more- the characteristically low maintenance of butterfly valves.

SIZES

Concentric Babcock Valves are produced in sizes from 24″ to 200″, with an ANSI classification from 150 to 600 lb.

MATERIALS

We produce butterfly valves in a wide range of materials, including high alloys (exotic), like duplex stainless steels, hastelloy, inconel, monel, titanium, etc. Modern techniques and customer requirements continuously impose changes in materials and design, due to which any reference not included in this web will also be supplied.

INQUIRIES