Flow data of isolating valves is normally used within the calculations for pipework sizing and system pressure losses when the valve is in the fully open position. Many on/off isolating valves spend most of the time in the fully open position and therefore these valves should have high KV figures to reduce pressure drops, increase plant efficiency and contribute to reducing energy costs.
The sizing of regulating valves requires detailed calculations for each case, taking into account e.g. noise and cavitation.
Technical Specifications
| Construction | Concentric butterfly valve with bonded vulcanised rubber linings |
| Body type | Lugged wafer type |
| End connection | PN 6 / PN 10 / PN 16 ASME, CL 150 JIS, 5K / 10K |
| Design pressure | 16 bar / 232 psi |
| Nominal diameter | DN 50 / NPS 2 up to DN 1200 / NPS 48 |
| Building length | Wafer short, acc. EN 558 / ISO 5752, Serie 20 |
| Body material | Wafer short, acc. EN 558 / ISO 5752, Serie 20 |
| Sealing | Rubber seat |
| Operation | Lever Worm gear Pneumatic actuators Electric actuators Hydraulic actuators |
