https://www.engineeringnews.co.za

Bushing restores gland sealing in pump

IMPROVING RELIABILITY The PFR-throat bushing restored the gland seal to specification in the wastewater pump

CONTINUOUS RUN Aesseal cartridge mechanical seals have worked faultlessly for five years at a booster station in Port Elizabeth

8th August 2014

By: Mia Breytenbach

Creamer Media Deputy Editor: Features

  

Font size: - +

Mechanical seals company Aesseal has supplied a specialised PFR throat bushing to restore the gland seal to specification in a wastewater pump serving the Umhlatuzana Inlet sewage pumpstation (SPS), in Durban.

The bushing fitting forms part of eThekwini Water & Sanitation’s current extensive wastewater treatment works and SPS refurbishment initiatives that involve experimenting with emerging pump sealing technologies to improve the quality and reliability of the municipality’s installed pump database, Aesseal says.

Aesseal’s Durban branch, which supplied the bushing, notes that, owing to the wear in the pump’s stuffing box, the PFR throat bushing was considered a suitable alternative to restore the gland seal to specification. In addition, an SKF automatic lubricator system was fitted to deliver untended seal lubrication.

The bushing, which comprises four rings of Style 380 packing and a split lantern ring of glass-filled polytetrafluoroethylene (PTFE), was drawn from the company’s carbon-filled PTFE product range.

The PFR throat bushing, first introduced to the market by Aesseal in 2012, allows a softer wearing packing to be used in the pump stuffing box, reducing gland packing costs and delivering a more effective sealing arrangement, the company notes.

Its main features include spiral grooves and special flow geometry that work together to reduce flush water use and prevent solids from entering the box, which results in less wear on the shaft and packing surfaces, the company points out.

“The bushing harnesses the displacement and orientation of the flow medium around the rotating shaft, using the spiral grooves to collect any solids between the shaft and the bushing, and expelling them by means of the induced flush stream,” the company says, adding that a narrow gap to the shaft allows the bushing to control the flushing water volume, reducing leakage and the water requirement by up to 80%.

Edited by Megan van Wyngaardt
Creamer Media Contributing Editor Online

Comments

Latest News

Magazine video image
Magazine round up | 29 March 2024
29th March 2024

Showroom

Weir Minerals Africa and Middle East
Weir Minerals Africa and Middle East

Weir Minerals Europe, Middle East and Africa is a global supplier of excellent minerals solutions, including pumps, valves, hydrocyclones,...

VISIT SHOWROOM 
Weir Minerals Africa and Middle East
Weir Minerals Africa and Middle East

Weir Minerals Europe, Middle East and Africa is a global supplier of excellent minerals solutions, including pumps, valves, hydrocyclones,...

VISIT SHOWROOM 

Latest Multimedia

sponsored by

Option 1 (equivalent of R125 a month):

Receive a weekly copy of Creamer Media's Engineering News & Mining Weekly magazine
(print copy for those in South Africa and e-magazine for those outside of South Africa)
Receive daily email newsletters
Access to full search results
Access archive of magazine back copies
Access to Projects in Progress
Access to ONE Research Report of your choice in PDF format

Option 2 (equivalent of R375 a month):

All benefits from Option 1
PLUS
Access to Creamer Media's Research Channel Africa for ALL Research Reports, in PDF format, on various industrial and mining sectors including Electricity; Water; Energy Transition; Hydrogen; Roads, Rail and Ports; Coal; Gold; Platinum; Battery Metals; etc.

Already a subscriber?

Forgotten your password?

MAGAZINE & ONLINE

SUBSCRIBE

RESEARCH CHANNEL AFRICA

SUBSCRIBE

CORPORATE PACKAGES

CLICK FOR A QUOTATION







sq:0.201 0.256s - 144pq - 2rq
Subscribe Now