Replace the sleeve on a pinch valve in 80 minutes
January 2018
Maintenance, Test & Measurement, Calibration
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 10 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 them 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 its facilities in Jet Park. The range includes sizes from DN150-DN600 with larger sizes available on request.
For more information contact Gregor Hopton, Afrivalve, +27 (0)11 791 1411, [email protected], www.afrivalve.co.za
Further reading:
Keeping lifting equipment safe and securely on track
Maintenance, Test & Measurement, Calibration
In the hustle and bustle of mining production, the focus on the servicing of lifting equipment can unintentionally be sidelined. This situation can easily be avoided with a customised Konecranes Service Agreement that offers a comprehensive and systematic approach to asset management.
Read more...
Tablet oscilloscope
Vepac Electronics
Maintenance, Test & Measurement, Calibration
The PeakTech 1212 is a new, innovative oscilloscope designed to resemble a standard tablet in size and form. This tablet oscilloscope allows users to record any common measurement quantity and type, just like a desktop oscilloscope.
Read more...
Powerful test controller
Maintenance, Test & Measurement, Calibration
XJTAG is launching the XJLink-PF20, brings the same dependability and robustness to a new 4-TAP two-port configuration, and offering both functional and JTAG boundary scan testing with the XJTAG testing suite’s long-established power and control.
Read more...
Multichannel AWGs for GHz signal generation
Vepac Electronics
Maintenance, Test & Measurement, Calibration
Spectrum Instrumentation has introduced its new flagship Arbitrary Waveform Generators from the company’s Netbox series, an easy-to-use instrument line that can be controlled via an Ethernet cable from any PC or network.
Read more...
The smart choice for test and measurement solutions
RS South Africa
Maintenance, Test & Measurement, Calibration
As the demand for precision and efficiency continues to grow across industries, RS PRO, the own brand of RS, provides a complete portfolio of test and measurement equipment engineered to meet the highest standards of performance, safety and value.
Read more...
New frequency counter with 10 digits of resolution
Comtest
Maintenance, Test & Measurement, Calibration
B&K Precisio has a new series of universal frequency counters designed for a wide range of frequency measurement applications.
Read more...
Verification using Heartbeat Technology is a breeze
Maintenance, Test & Measurement, Calibration
Heartbeat Technology reflects Endress+Hauser’s long-term commitment to enhancing measurement reliability and efficiency across a growing product portfolio.
Read more...
Clog-resistant nozzle for powerful stationary tank cleaning
Maintenance, Test & Measurement, Calibration
As EXAIR and BETE continue to build on a strong partnership, EXAIR has recently added a selection of BETE products to the site, including the innovative BETE HydroClaw tank and vessel cleaning nozzle.
Read more...
Clog-resistant nozzle for powerful
Maintenance, Test & Measurement, Calibration
As EXAIR and BETE continue to build on a strong partnership, EXAIR has recently added a selection of BETE products to the site, including the innovative BETE HydroClaw tank and vessel cleaning nozzle.
Read more...
Why your next oscilloscope should
Comtest
Maintenance, Test & Measurement, Calibration
The PC-based USB oscilloscope is a cutting-edge, adaptable alternative to traditional benchtop oscilloscopes that’s redefining test and measurement.
Read more...
printer friendly version