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BS Grooved Butterfly Valve with Tamper Switch UL/FM/VDS Approved
Operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favored because they cost less than other valve designs, and are lighter weight so they need less support. The disc is positioned in the center of the pipe. A rod passes through the disc to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, so it induces a pressure drop, even when open.
Construction
Parts | Material |
Body | EN-GJS-450-10 |
Disc | EN-GJS-450-10+EPDM |
Stem | Stainless Steel 1Cr17Ni2 |
Bushing | Bronze |
O-Ring | EPDM |
Gear-Box | Ductile Iron ASTM A536 Grade 65-45-12 |
Description
Vulcanized disc design for bubble-tight shutoff.
Flag type position indicator.
Range from DN50 up to DN200.
Minimum load loss.
Epoxy paint 200 microns min: RAL 3000.
Standards
Design: BS EN 593
Grooved: ISO 6182
Top Flange: EN ISO 5211
Pressure Rating: PN10/16
Working Temperature: 0℃- 80℃
Suitabilities
Water Fire Fighting
