Butterfly valve is a critical component in most of installations. The advantages that have made butterfly valve so popular are the technological improvements of materials and adaptability that are required when a simple and reliable solution is demanded.
Low pressure drop across the disc.
Complete and permanent tightness.
Bi-directional bubble-tight shutoff.
Easy assembling and disassembling.
Body: it is made from metal and several alloys according to the requested work conditions. It is not in contact with the flow medium.
Disc and Shafts: They work as unique piece to produce a movement and are made from metal suitable to each fluid (coated ductile iron, stainless steel, special alloy, etc.). Disc is spherically machined.
Seat: Isolate the body and assure the internal and external tightness of the valve. The seat rubber is chosen according to the fluid (temperature, pressure, chemical attack, etc.).
Assembling: It is done between standard flat flanges, without any joint ring, as the seat rubber produces a complete tightness, not only internally but also externally.
Testing: Valves are tested for bubble tight shut off at full pressure rating, assuring tightness and resistance. Under request we can issue certificate and manage testing of product by international classification agency, official laboratories, etc
Exploded view
1. BODY
2. ‘O’ RING
3. FRICTION BUSHING
4. UPPER SHAFT
5. SEAT
6. DISC
7. LOWER SHAFT
8. RETAINING RING
9. ZEGI RING BODY
10. PLUG
11. ZEGI RING BODY