MATERIALS, GAS & FLUIDS HANDLING

Materials, Gas & Fluids Handling

Section 6

​6​MATERIALS, GAS& FLUIDS HANDLING

Murray & Roberts Water

Engineered Excellence

​Engineered Excellence Murray & Roberts is South Africa’s leading engineering and construction services company. It has delivered infrastructure throughout South and Southern Africa for more than 110 years and is today recognised as an international engineering and construction group.The company offers civil, mechanical, electrical, mining and process engineering, general building, procurement, construction, commissioning, operations and […]

Introduction to reverse osmosis

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​Murray & Rober​ts Water22 Skeen BoulevardBedfordviewSouth AfricaTel: +27 11 456 1307Web: www.murrob.con ​INTRODUCTION TO REVERSE OSMOSISWhat is Reverse Osmosis (RO)?​In order to understand “reverse osmosis”, the naturally occurring phenomenon of “osmosis” must first be understood. Osmosis is the tendency of a solvent (in this case water) to pass through a semi-permeable membrane from a solution […]

Introduction to reverse osmosis

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​Murray & Rober​ts Water22 Skeen BoulevardBedfordviewSouth AfricaTel: +27 11 456 1307Web: www.murrob.con Recovery – the volumetric percentage of feedwater that emerges from the RO system as permeate.Recovery% = Permeate Flow / Feed Flow x 100​Concentration Factor – the ratio between the concentrate stream TDS to the feed stream TDS. Multiplying the feed TDS concentration by […]

Introduction to reverse osmosis

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​Murray & Rober​ts Water22 Skeen BoulevardBedfordviewSouth AfricaTel: +27 11 456 1307Web: www.murrob.co​m Technique Purpose Mehcanical Pre-Screens Removes large objects and sand Cartridge Filters Last protection of RO membranes Clarifier Reduces suspended solids Media Filters Removes suspended solids Activated Carbon Removes organics and strong oxidants/disinfectants (e.g. chlorine, chlorine dioxide) Greensand Filters Reduces Iron & Manganese Ozone […]

Hall Longmore

Steel Pipe for Water, Petrochemicals, Gas, Construction and Mining

​Steel Pipe for Water, Petrochemicals, Gas, Construction and MiningTel: +27 11 874 7300Fax: +27 11 824 4962E-mail: [email protected]: www.hall-longmore.co.za ManufacturingPipe Since 1924.​Hall Longmore ranks amongst the leading international manufacturers of large diameter steel pipe for the transportation of water, gas and petrochemicals.​The state-of-the art manufacturing facilities feature the most modern pipe making equipment and technology […]

Large bore welded steel pipe

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​Tel:​ +27 11 874 7300Fax:​​ +27 11 824 4962E-mail: ​[email protected]: www.hall-longmore.co.za ​LARGE BORE WELDED STEEL PIPE​1.0 Introduction​Large bore steel pipe applications range from the transportation of water, gas, petrochemical products, slurries to piling and structural steel fabrication. Pipes are generally manufactured to international specifications such as as API 5L and 5CT,  EN10224 or SANS 719 […]

Large bore welded steel pipe

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​Tel:​ +27 11 874 7300Fax:​​ +27 11 824 4962E-mail: ​[email protected]: www.hall-longmore.co.za ​7.3 Loading & off loading and stacking of pipes​The ends of lined pipe should be kept covered by suitable end pieces to prevent damage to the lining through the intrusion of foreign matter. Wrapped piping should be supported in padded cradles or on sawdust […]

Large bore welded steel pipe

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​Tel:​ +27 11 874 7300Fax:​​ +27 11 824 4962E-mail: ​[email protected]: www.hall-longmore.co.za Bend test No crack < 3mm at 180° bend No cracks or breaks exceeding 3.2mm at 180° bend. No cracks or breaks exceeding 3.2mm at 180° bend. No cracks or breaks exceeding 3.2mm at 180° bend. no cracks or breaks shall occur anywhere in […]

Pressure relief and regulating valves - applications

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​AXIOM HYDRAULICS​17 Heidelberg Road, Village Main,​Johannesburg,South Africa​Tel: +27-011-334-3068/86Fax: +27-011-334-4543e-mail: [email protected]​ ​PRESSURE RELIEF AND REGULATING VALVES – APPLICATIONS​Pressure Relief and Regulating Valves​Pressure limiting and regulating relief cartridges are normally closed pressure control elements designed to maintain a constant pressure differential between port 1 (inlet) and port 2 (outlet) when oil flows through the valve. Relief valves […]

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