Double Flanged Butterfly Valves
The double flanged design is suitable for high pressure loading and is excellently suited for use in heavy industry, shipbuilding and waterworks.
Features:
- Absolutely tight sealing with flow in either direction
- The valve body and disc are accurately machined which results in low operating torque and long service life and reliability
- Triple shaft bearings prevents shaft deflection and guarantees optimum guidance even after many years of operational service
- Can be disassembled, material specific recycling possible
- Can be installed in any desired position
- Maintenance-free
- Fully repairable valve
General applications:
- Offshore
- Water and wastewater technology
- Shipbuilding
| Technical Data | |||
|---|---|---|---|
| Nominal diameter: | DN 20 -DN 600 (DN 20 nur PN 10/16) |
Marking: | DIN EN 19 |
| Face-to-face:: | EN 558 Series 13 ISO 5752 Series 13 API 609 Table 2C BS 5155 short NF E 29-305.1 |
Tightness check: | DIN 3230 T3 BO, BN (Leakage Rate 1) ISO 5208, Category 3 API 598 Table 5 ANSI B 16-104, Class VI |
| Flange accomodation: | DIN 2501 PN 6/10/16 ANSI B 16.5, Class 150 MSS SP44 Class 150 AWWA C 207 AS 2129 Table D and E BS 10 Table D and E JIS B 2211-5 K JIS B 2212-10 K |
Temperature range: | -20°C to +160°C depending on pressure, medium and material |
| Flange surface design: | DIN 2526 Form A-E, ANSI RF | Operating pressure: | max. p 16 bar |
| Top flange: | EN ISO 5211 NF E 29-402 |
Differential pressure: | max. delta p 16 bar |
| Vacuum: | 0,2 bar absolute, depending on medium and temperature |
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