Soft-sealing wafer butterfly valve for HVAC, water and energy systems.
The KSB butterfly valve BOAX-S is a centric, soft-seated industrial valve in wafer design for water, energy and HVAC systems. With its compact, maintenance-free design, reliable elastomer bellows and high-quality stainless steel disc, the BOAX-S offers a durable, universally applicable solution for drinking water, heating and cooling circuits and technical building systems. Thanks to the ISO 5211 interface, it is ideal for integrated automation.
In combination with AirTorque actuators and accessories for maximum efficiency and reliability.
| Feature | Specification |
| Type | BOAX-S (wafer type) |
| Nominal size (DN) | DN 20 – DN 600 |
| Nominal pressure (PN) | PN 6 / PN 10 / PN 16 |
| Housing material | EN-GJS-400-15 (ductile iron) |
| Disc material | Stainless steel 1.4301 / 1.4308 |
| Seat/gasket | EPDM-XU, Nitrile-K, Epichlorohydrin EG |
| Temperature range | -10 °C to +130 °C (depending on gasket) |
| Standards | EN 593, EN 12266-1, ISO 5752-20, EN 558-1-20 |
| Face-to-face length | ISO 5752 Series 20 |
| Flanged connection | EN 1092-1 |
| Drive flange | ISO 5211 |
| Leakage rate | A according to EN 12266-1 |
| Coating | Epoxy resin or polyurethane, orange RAL 2002 |
| Special features | Maintenance-free, automation possible |
Our insulations are more than just accessories – they perfectly complement fittings and systems and increase efficiency, safety and adaptability.
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