Product category:
Process Industry Pumps
News Release from: AxFlow | Subject: Wernert NKPF and VKPF
Edited by the Engineeringtalk Editorial
Team on 21 March 2006
Plastic pumps resist aggressive liquids
Vertical centrifugal chemical pumps made from plastics to increase resistance to aggressive liquids suit dry and submersible arrangements for conveying aggressive, corrosive or solid laden liquids.
AxFlow has launched a series of vertical centrifugal chemical pumps made from plastics to increase resistance to aggressive liquids The Wernert NKPF and VKPF pumps have been developed for dry and submersible arrangements respectively and are recommended for conveying aggressive, corrosive or solid laden liquids
This article was originally published on Engineeringtalk on 29 Jun 2005 at 8.00am (UK)
Related stories
Pulsation dampeners protect process systems
The Blacoh Sentry protects pipes, valves, fittings, meters and inline instrumentation from destructive pulsations, vibrations, surges, cavitation, thermal expansion and water hammer.
Self-cleaning filter takes care of chips
A new development in self-cleaning disc filter technology is opening up opportunities for removing the harmful metal chips and fines from the coolant in machining centres.
Both pumps offer a flow rate from 0.5 to 800m3/h and differential head up to 110m, and will accommodate temperatures up to 115C.
The absence of any rotating seal enables the pumps to be dry run for a short time.
The NKPF is for use on the exterior of suction or holding tanks and may be used for the delivery of suspensions, oversaturated solutions and corrosive liquids.
Because it is attached to the outside of the vessel, the pump does not require a ground plate, thereby making it suitable for use in confined spaces.
The distance between the lower bearings and the impeller is governed by constructive dynamics as the shaft bearings are above the maximum suction sided liquid level.
The delivery suspension pipe has an acid resistant inner coating and links the bearing lantern to the pump casing.
Having the same stability of comparable metallic pumps means the NKPF can accommodate forces and moments at the pump branches similar to those occurring in cast iron pumps.
The VKPF is a heavy duty sump pump for conveying aggressive, corrosive or solid laden liquids from basins, vessels or sumps.
Recommended applications include electroplating processes, water and waste water treatment and in neutralising plants for the transfer of acids and alkalis from tanks, open reservoirs or pits.
Like the NKPF, this pump has a semi-open impeller and thick-walled interchangeable plastic parts.
Designed to the two-pipe principle, stability is achieved by forming the suspension pipe and the delivery pipe as an integral unit.
Built for an immersion depth of 1.5m, it is the absence of bearings and shaft seal in the submersible area that enable the VKPF to handle liquids containing a high solid content.
Both pumps, and their variants, are Atex compliant and suitable for operation all hazardous environments.
• AxFlow: contact details and other news
• Email this article to a colleague
• Register for the free Engineeringtalk email newsletter
• Engineeringtalk Home Page
Search the Pro-Talk network of sites
