TEKO Industry Co., Limited
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Two Piece Shaft Wafer End Concentric Design API609 Butterfly Valve For Water Works
Introduction
Wafer type butterfly valve, semi lug, with centric disc and bonded liner. 100% bi-directional bubble tight shut off.
Material List
| PART | DESCRIPTION | STANDARD MATERIAL |
| 1 | Body | ASTM A536 Ductile Iron |
| 2 | Disc | See Below |
| 3 | Shaft | ASTM A276 316SS |
| 4 | Bearings | Fiberglass Backed PTFE |
| 5 | Seat Assembly | Buna-N, EPDM or VITON (Phenolic Supported) |
| 6 | Set Screws (Not shown) | Plated Carbon Steel (Lug only) |
| 7 | Roll Pins | Plated Carbon Steel |
| 8 | Stop Plate (Not shown) | Plated Carbon Steel |
| 9 | Fasteners (Not shown) | Plated Carbon Steel |
| 10 | Handle Assembly | Ductile Iron |
| 11 | Lube Fitting | Plated Carbon Steel |
| 12 | O-Ring | Buna-N |
Other materials are available upon request.
Component Design
Mounting Pad: ISO5211 mounting pad for easy direct mounting of all types of actuators: handles, gear operators, electric and pneumatic.
Weather Seal: To bushing keeps dust and moisture from entering the upper shaft journal.
Bushings: Shaft bushing reduces torque and isolates the shaft from the valve body, preventing seizure of the shaft due to corrosion in the shaft journal.
Seat: Pnenoli-back seat with advantages of non-collapsible, stretch resistant, blow out proof and field replaceable Optional: rubber seat can be vulcanized to body
Shaft: Two pieces shaft allows the disc to float within the flow way, increasing the cycle life.