Product category:
Pumps and valves
News Release from: Michael Smith Engineers | Subject: Viking LVP stainless steel vane pumps
Edited by the Manufacturingtalk Editorial
Team on 14 March 2008
Vane pumps transfer HP corrosive liquids
Stainless steel vane pumps 'sweep' high pressure, corrosive or thin liquid through a cam-shaped cavity to ensures very low slip and high volumetric efficiency.
Where reliability and durability are important when choosing a pump for transferring corrosive or thin liquids at higher pressures, Viking LVP stainless steel vane pumps, are an ideal choice, said Michael Smith Engineers The LVP Series of Vane pumps offer important benefits when compared to other types of pumps, particularly when challenging applications occur involving chemicals or liquefied gases
This article was originally published on Manufacturingtalk on 21 Aug 2008 at 8.00am (UK)
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Centrifugal pumps handle corrosive liquids
Plastics magnet-drive centrifugal pumps, made in polypropylene or PVDF, handle hazardous, corrosive liquids at flow rates up to 27m3/h and heads up to 27m.
For example, in this type of pump design vanes extend from slots in the pump rotor and these help to 'sweep' liquid through a cam-shaped cavity.
Michael Smith Engineers told manufacturingtalk that this ensures very low slip and high volumetric efficiency at all points on the performance curve, which contributes to a longer pump life and low life-cycle cost.
The LVP range of pumps covers flow rates up to 36m3, pressures up to 14 bar and the ability to handle liquids with viscosities from 0.1 to 500 cSt.
They are also designed to do the following.
* Provide smooth, non-pulsating, low-shear flows.
* Offer superior suction lift capability.
* Offer a short-term dry-run capability.
* Capacity is proportional to speed.
* Reversible direction of flow.
LPV pumps use materials which ensure optimum durability and long-life performance.
For example, they are manufactured with surface hardened stainless steel casings as standard and feature a hardened chrome oxide coated shaft which turns within a silicone carbide sleeve bearing.
Also, the pump's self-adjusting, solid PEEK plastics vanes and push rods provide superior vacuum capabilities.
* Easy pump installation - to ensure easy installation, the pumps have standard ports to enable simple fitting of gauges or transducers, top-mounted adjustable pressure relief valves.
These eliminate the need and expense of return-to-tank systems.
A rotatable casing with motor mount option on the two smallest models in the range, permits either horizontal or vertical porting.
Typical applications for Viking LPV pumps will include transferring corrosive and thin liquids that are compatible with stainless steel, yet cause unacceptable corrosion on cast iron pumps.
For example, in chemicals manufacturing where users run many different liquids through their pumps, such as acids, alkalis, alcohols, solvents and aqueous solutions, yet require maximum corrosion protection.
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