Comparison of API 610 VS4 pump and VS5 Pump

Comparison of API 610 VS4 pump and VS5 Pump

Both VS4 and VS5 kind vertical pumps square measure wide used for loading/unloading and utility services. If you’ve got a doubt in choosing either VS4 pump or VS5 pumps for a selected application, then this text can assist you created a conclusion.

What is the VS4 pump type?

Vertically suspended pump with single volute casing and also the line shaft driven sump pumps shall be selected as VS4 kind pumps.

What is the VS5 pump type?

Vertically suspended pump with single volute casing and also the shaft may be a cantilever.
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Description	VS4 Pump	VS5 Pump
Pump Type	The VS4 siphons are Vertically suspended siphon with single packaging structure and the packaging is a volute shape. These siphons are line shaft driven sump siphons will be assigned siphon type VS4.	Vertically suspended, cantilever sump siphons will be assigned siphon type VS5.
Line Shaft Bushes	The line shaft shrubberies are utilized to help the pole. Because of this pole wobbling at rapid will be diminished. Henceforth the more profundity can be accomplished by VS4 siphon when contrasted with VS5 pump or siphon.	The rotor will be cantilevered from its bearing get together. Submerged base bushings are not used to control the pole.
Over  Speed limit	VS4 type siphons the primary dry basic speed will be 20% over the most extreme passable persistent speed	VS5 siphon the principal dry basic speed will be 30 % over their greatest admissible nonstop speed.
Shaft Runout Limitation	The shaft runout is constrained to 70 μm (TIR) as estimated on the pole legitimately over the mechanical seal or stuffing box. The above worth is thumb rule. Generally, it depends on the adaptability factor (Refer table 17 of API 610)	The pole runout will not surpass 50 μm (TIR) as estimated on the pole legitimately over the mechanical seal or stuffing box
Line shaft bush lubrication	Normally in VS4 siphon either siphoning fluid or outer clean liquid is utilized for line shaft shrubbery lubrication.	Due to the nonappearance of line shaft hedges oil isn’t appropriate.
Pump Length	Pump length up to 10meter is effectively accessible. Some siphon producer will ready to give the siphon length more than 10m also.	Maximum siphon length is 2 to 3meter. On the off chance that the siphon length more than 3 to 5meter more consideration ought to be accommodated shaft diversion and wobbling. On the off chance that the siphon length more than 5meters it is constantly prudent to choose VS4 pumps.
Pump cost	Cost is higher when contrasted and VS5	Cost is less when contrast and VS4