Tilting Disc Check Valves

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Sierra Engineering & Manufacturing

Cairo, Egypt

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SIERRA model 5400 is a swing-type tilting disc check valve that is a development of the traditional type swing check valve that has been designed to allow for frequent flow reversals without causing wear in the shaft seat which is a common feature of the swing check. The compact body of the tilting disc saves space during installation hence reducing construction costs. The disc is pivoted in the upper one-third of the valve body; hence the disc eccentricity is much smaller than that of the conventional swing check. Due to the shorter distance traveled by the disc, the tilting check valve closes more rapidly hence resulting in less slam and water hammer Tilting disc check valves can be supplied with counterweights or springs to assist closure hence reducing shut-off time. They can also be equipped with a double-stage hydraulic damper (oil dashpot) for slow closure requirements.

                                                            Product Range
                                                            DN250 – DN1200
                                                        
                                                            Pressure Rating
                                                            PN10, PN16
                                                        
                                                            Temperature Range
                                                            -20°C TO +70°C
                                                        
                                                            Accessories
                                                            Counterweight and/or hydraulic damper
                                                        
                                                            Certificates
                                                            Manufactured under a certified ISO 9001 quality system
                                                        
                                                            Flange Dimensions
                                                            EN1092-2 (DIN2501)
                                                        
                                                            Hydrostatic Testing
                                                            EN12266, ISO5208
                                                        
                                                            Type Testing
                                                            EN1074-3

Potable and raw water
Main transmission line
Treatment plants

Main Product Features

Compact design which requires a small space
Flexible design allowing maintenance of counterweight and/or hydraulic damper
Stable operation where the flow is allowed to pass on both sides of the disc
Lower operating torques and long-life seals due to its double eccentric design
The valve shall be equipped with a counterweight and/or hydraulic damper to minimize water hammer
The body seat ring is made of corrosion-resistant steel, for valve longevity
Shafts protrude on both sides of the body and allow the lever and counterweight to be mounted on the right or left side, both
Adjustable weight offers adaptability to the individual working conditions