High‑Performance Double‑Offset Butterfly Valves
Overview:
These double‑flanged double‑offset high‑performance butterfly valves provide reliable bi‑directional sealing for water and neutral liquid services.
The product series covers nominal sizes DN100‑DN1600 with pressure ratings PN10, PN16, PN25 and PN40, working temperature ranging from 0 °C to 70 °C.
Designed and tested according to BS5155, BS EN593, BS EN558‑1 Series 13 &14, it supports multiple sealing concepts including seal‑in‑disc, seal‑in‑body and metal‑to‑metal seat options.
Suitable for municipal water supply networks and heavy‑duty industrial piping systems.
Key Features:
- Double‑offset design, double‑flanged end connection, bi‑directional sealing performance
- Wide size range: DN100 up to DN1600; pressure classes PN10, PN16, PN25, PN40
- Operating temperature: 0 °C to 70 °C, suitable for water and neutral‑liquid media
- Flexible sealing alternatives: seal‑in‑disc, seal‑in‑body or metal‑to‑metal hard‑seat
- Optional full‑body rubber‑lining for enhanced corrosion resistance
- Actuation choices: electric or hydraulic drive for automated pipeline control
- Standard factory tests: seat test at 1.1 × PN, body hydro‑test at 1.5 × PN
- End flange standards compatible with SABS 1123, BS4504, ANSI B16.1 & B16.5
- Alternative construction materials available upon special request
- Compliant with BS 5155 / BS EN 593 / BS EN 558‑1 Series13 &14
