CRANE Duo-Chek® Check Valves

• Dual-plate designs that are compact and lightweight for efficient seating, operation and lower installation cost
• Independent springs with long legs to prevent seat scrubbing and provide non-slam performance
• Retainerless valve design without body penetration for critical service applications

Lightweight and Compact Wafer Design – Installs between mating flanges with 10 to 20{c42715f24aabaeb6b4e3cb6160603ee9c5a794ce0020a316ef38081de5a321e6} 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 tight shutoff to meet industry standards.

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{c42715f24aabaeb6b4e3cb6160603ee9c5a794ce0020a316ef38081de5a321e6} – 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 – For critical service applications, prevents possible escape of unwanted and/or hazardous materials to atmosphere – provides safety in critical services by eliminating 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.

Special Valves Meet Market Needs – Wide size range, pressure range and added options allow further market needs to be met – Reliance on world’s largest wafer check line to supply more needs.