https://www.engineeringnews.co.za

How Long Does It Take To Change The Sleeve In A 350nb Pn25 Pinch Valve? - One Hour Twenty Minutes

7th November 2017

     

Font size: - +

This article has been supplied.

Red Roc  (0.02 MB)

The standard practice for replacing a sleeve in any pinch valve is to remove the valve from the line which requires the use of a crane for all but the smallest valves. The valve is then stripped – the sleeve replaced – and the valve rebuilt. It is then reinstalled in the line – a process that can take several hours at best requiring the attention of several fitters and millwrights.
 
With the patented Red Roc Hi-Lift feature the valve remains in the line and the sleeve can be replaced in a much shorter time with only two fitters. 
 
On 15 September 2017 at a nickel mine in Mpumalanga a Red Roc valve sleeve was changed in 80 minutes and reduced the plant downtime by at least ten hours.
 
“The process is simple and only involves removing the bolts holding the top half of the body in the line and slackening the ones in the bottom half. Jacking bolts on the valve flanges spread the valve flanges from the pipe flanges loosening the sleeve, so that it can be removed in line.

The quick release clamps holding the two halves together are removed. The top half is then raised using the two hydraulic cylinders mounted on the bridge and operated by a hand pump. In the raised position the old sleeve can be lifted out and the new one fitted in position.

The process is then reversed with the body being allowed to drop by releasing the oil in the cylinders back to the reservoir – the clamps are refitted and line bolting replaced” said Gregor Hopton, Afrivalve’s Group Marketing Manager.  
 
The Red Roc Hi-Lift pinch valves are manufactured by Afrivalve, a division of eDART Slurry Valves at eDART Slurry Valve’s facilities in Jet Park, Gauteng. The range includes sizes from DN150-DN600. Larger sizes are available upon request.

To watch Creamer Media's latest video reports, click here
 

Edited by Creamer Media Reporter

Article Enquiry

Email Article

Save Article

Feedback

To advertise email advertising@creamermedia.co.za or click here

Showroom

Astore Keymak
Astore Keymak

Astore Keymak is one of South Africa’s leading suppliers of high-quality Thermoplastic Pipeline Systems, with branches in the major provinces.

VISIT SHOWROOM 
Monitor Distributors
Monitor Distributors

We at Hawk High Pressure Pumps specialise in industrial pumps and pumping systems. Our high pressure washing equipment is locally manufactured and...

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







301

sq:0.059 0.119s - 143pq - 2rq
Subscribe Now