The seat in a resilient-seated BUTTERFLY VALVE usually extends around to both faces of the valve. As a result, no gaskets are required as these seats serve the function of a gasket. The seat material which extends past the face is compressed during installation and flows toward the centre of the valve seat. Any change in this configuration due to improper installation directly affects the pressure rating and seating/unseating torques.

Unlike most valve types, the BUTTERFLY VALVE's disc actually extends beyond the face of the valve body at given angles of opening (say, 30º or more) when installed between flanges. Therefore, it is very important before installation to ensure that the disc is able to freely turn and enter the flanges and pipe-work.

More products of valves

 GATE VALVES

PLUG VALVES

REDUCING VALVES

BALANCING VALVES

FORGED STEEL VALVES