High Performance Butterfly Valves
Incorporating tri-centric sealing geometry, the laminated stainless steel or solid metal seal of the Gunric Butterfly Valve provides bubble tight shut-off within a wide range of temperatures and pressures. The seal is held in position by a bolt-on retaining ring, and, together with the seat ring, is easily replaceable.
Technical Information
- Face to Face According to BS EN 593, ANSI B16.10, Flange drilling can accommodate
- BS EN 1092,DIN 2630-2638, ANSI B 16.5 API 605, B16.47, API 609 & AWWA C207.
- Pressure test according to BS EN 593
Double Flanged Triple Eccentric Butterfly Valve Materials
- Body & Disc: Fabricated carbon steel S355Jr, S.G. Iron BS2789 Gr.420, Cast Steel A216
- WCB. Also Stainless Steel & Nickel Alloys
- Shaft: Stainless Steel: 431(EN57)
- Bearing bush: Glacier DU, Stainless Steel 316 (Chrome Carbide), Phosphor Bronze
- Seal Ring: Laminated Stainless Steel
- Seat Ring: Stainless Steel 304
- Retaining Ring: Stainless Steel 316
- Actuation: Valves are generally fitted with worm gearboxes for manual operation. They can also be fitted with electric, pneumatic or hydraulic actuators to suit output drives in accordance with ISO 5211.
Steel
Methods for manufacturing steel have evolved significantly since industrial production began.
Manufacturing high quality steel is a complex process involving materials and process technology. Several steps are taken to produce finished semi, section or steel band from iron ore and alloy metals and various additives to water and steam for heating, cooling, cleaning, rinsing, processes. Steel work plants have vast lengths of metal and plastic pipeline systems to supply and dispose of the different media, therefore different valves are required for different processes.