Butterfly Double Flange
![quadruple-butterfly-valve-quadax-lg](https://cdn.store-assets.com/s/1285843/f/11854367.jpg)
https://quadaxvalves.com/double-flange-type/
This type has a flange on both sides and is connected to the pipeline via a screw-nut connection. It is the shortest overall length after the lug type.
Housing materials
- Steel, stainless steel,
- Special materials: (Duplex, Inconel, Bronze)
Seat materials
- Inconel
- Others on request
Sealing materials
- Graphite / stainless steel, Inconel,
stainless steel, PTFE
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