731P/732P Vacuum/High Velocities

A wafer or lugged pattern, rubber seated butterfly valve. The seat is vulcanised to the valve body, and incorporates a modified cosine curve seat profile. This provides lower torque, reduced friction and improved flow characteristics, especially at the partially open position.

The vulcanised seat also ensures improved performance under high velocity and vacuum conditions.

Seat: EPDM, NBR
Disc: Cast Steel, 316SS, 304SS, PPS, Bronze, Nylon 11 coated
Body: SG Iron (GGG40) DN50 to DN300, Cast Steel DN50 to DN300
Size range: DN50 to DN300
Pressure range: PN16 to PN20
Temp. range: EPDM: -20°C to 120°C
NBR: -10°C to 80°C
Face-to-face: ISO5752, BSEN 593:1998, Wafer short
Actuator flange: ISO5211
Paint finish: 300hr salt spray ASTM B117, others available.

NB. For sizes above DN300, refer to the model 732X valve range (DN350 to DN600).

Typical applications:
Water treatment, power generation, chemicals, sugar, abrasive services, vacuum and high velocity applications (above 3m/s).

  


731p