Full Port Design - offers the highest flow area, lowest pressure loss available.

Seatless/Tight Shutoff Design- provides positive flow reversal action at low flows and backpressures

Quiet Operation - Teflon covered stop to ensure quit operation during valve cycling

Higher Pressure Ratings - engineered to provide increased operating pressure in all configurations

All Stainless Steel Internals - all standard carbon steel and stainless steel models come with corrosion resistant 316 stainless steel.

Reliable / Long Lasting Operation - no metal-to-metal points, no seats to wear and quick acting / short travel from fully open to fully closed positions.

Figure 1b

The “Flexi-Hinge ‘Next Generation’ internal components design, incorporates a fully supported valve plate configuration. This design eliminates adverse loading of the hinge/seal primary component.  The “Flexi-Hinge” design transfers the valve plate pressure load directly into the center post support. Figures 1a and lb show the resultant pressure action on the Flexi-Hinge  internal components. This valve plate/center post arrangement is fully supported in all planes, thereby eliminating severe loads in the hinge area of the seal.

The competitive valve plate configuration, shown in Figure 2a and 2b, acts as a cantilever, knife-edge, which can result in premature failure of the hinge / seal primary component. Pressure load on the valve plate is transferred into the plane of the hinge post (wing support), as well as perpendicularly into the hinge clamp (wing pin). This resultant load induces a high stress on the elastomer resilient hinge area of the seal.

Figure 2b