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  • CUTWATER? | Eng-Tips
    The "cutwater" is located in the discharge casing of a centrifugal pump and it directs the product discharge from the impeller into the discharge volute Along with the impeller, the cutwater can suffer damage from cavitation
  • cutwater | Eng-Tips
    Hello Does anybody know where I can get an information about the shape of cutwater in the centrifugal pumps and its influence on vane-pass frequency? Thanks
  • Effects of worn cutwater throat in pump | Eng-Tips
    Hi everyone, I have been searching online for information about the effects of a worn cutwater throat in pumps but have not been too sucessful Can anyone help ? Thanks alot
  • Centrifugal Pump into Empty Main | Eng-Tips
    The impellor is overhung How would the cutwater cause problems at low heads during start up main filling that it wouldnt have during normal operation? Also why would the turbine type pump (axial?) not have problems operating away from its BEP? Wouldnt it have vibration problems due to pressure variations and dynamic imbalnces?
  • High BPF (3x) at Velocity and ENV measurements | Eng-Tips
    Increasing cutwater clearance beyond 20% and decreasing pump rotational speed both tend to reduce the number of harmonics present and their signal to noise ratio above the broadband level If streaming inlet vortices are involved then the problem is upstream of the pump impeller
  • Barske Impeller | Eng-Tips
    Robjack, As stated above the Barske (also written as Barski)impeller is one of the two keys to low flow high head pump design The other important ingredient is a concentric casing (rather than eccentric with a cutwater) This allows liquid to stay in the casing for more than one revolution around the casing, without the associated recirculation difficulties of cutwater volute designs It
  • Drooping head pump head curve | Eng-Tips
    We have testd three high head multi-stage pump in LNG LPG and obseved that all three pumps (Sp speed 800, 1000, 1250) have drooping head curve Is there any solution or method to change this performance to continously rising curve to shutoff head by reworking on existing impller or
  • Piping Resonance | Eng-Tips
    I have usually found it to be cheaper to modify the internals of a pump than to re-design the piping (modifying pump internals includes: better selected impeller, modified cutwater, modified rings, etc) This, of course, is only if operational requirements can support it Tmoose mentioned a VFD - that could be great for you in a number of ways
  • Flushing Water Mains - Scouring Velocity | Eng-Tips
    What velocity would I look for to achieve a proper scouring in a water main? 2 5 ft s? 5 ft s? Any links? Thanks!
  • AASHTO H-20, HS-20. . . | Eng-Tips
    AASHTO Loading of either H-20 or HS-20 is based on an axle load of 32 kips This load is divided into two tires; that is a load at each end of the axle The tire area contact is defined in AASHTO 3 30 Tire Contact Area The tire contact area for HS 20-44 shall be assumed as a rectangle with a length in the direction of traffic of 10 inches, and a width of tire of 20 inches Therefore, the





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