TEKO Industry Co., Limited
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Silent Retainerless No Emission WCB Wafer Duo Check Valve For Hazardous Services
The retainerless design means that they do not drill completely through the body of the valve to enable installation of the hinge-pin and stop-pin of a dual-plate check. It eliminats the possibility of outside leakage
Retainerless dual-plate check valves for a broad range of applications.
Features and benefits
| Lightweight and Compact Wafer Design | Installs between mating flanges with 10 to 20% the weight of flanged swing checks in popular sizes - Saves money in initial valve cost and provides lower installation cost. |
| Dual Plate, Flat Seat Design | Plate heel is lifted first by design to prevent seat wear. Employs two spring Ioaded plates with flat seats - Gives superior performance and bubbletight shutoff with resilient seats. |
| Independent Spring Action | Maximum deflection of 140°, provides improved valve response and longer life - Saves money with longer valve life and improved system performance by reducing water hammer. |
| Independent Plate Suspension with Unique Hinge Design (larger sizes) | Improves valve response and reduces friction forces by 66% - Further assurances of non-slam performance with faster valve response. |
| Simple, External Body Geometry | Configuration simplifies valve insulation - Saves money. |
| Variety of Body Designs Available - Lug and Double Flange | Provides options to suit application needs - Eases your selection process by utilizing the industry leader as your single source. |
| Wide Variety of Materials | Versatility for many services - Satisfies more application needs. |
| Flexibility in Installation Position | Provides more rigidity than pipe, eliminating concerns of pipe bending loads of flanged valves - Safety against thermal or seismic catastrophes. |
| Body Strength and Rigidity | Some sizes suitable for horizontal or vertical up positions -Simplifies piping design, eliminates constraints that swing checks create. |
| Retainerless Duo-Chek Design Eliminates Body Penetrations | For critical service applications, prevents possible escape of unwanted and/or hazardous materials to atmosphere - Safety in critical services eliminates and/or environmental concerns. Standards in Lug and Double Flange Designs. |
| Vertical Hinged Design | In horizontal position flow allows plates to function freely and full open under lower flow conditions as compared to swing check - Reduces pressure loss, improves dynamic response and eliminates valve chatter. |