GPS coordinates: lat: -26.186831 - lng: 28.321930

Dual Products

Address:

21 Bedford Avenue, . Benoni

Telephone:

+27 11 422 4326/7

Fax:

+27 11 421-7842

Description

Over the years Dual Products has gained a multitude of experience in the design and manufacture of specialized valves for all applications including high pressure and high wear applications, this experience has been developed through decades of manufacturing and valve solutions for the vast and varied requirements of the deep mine watering and surface slurry issues in the Southern African mining environment.
Dual Products design and manufacture their range of valves themselves – and hold TUV ISO 9001:2008 Certification No: 01 100 8280063, in the design, manufacture and supply of valves.

Keywords

Design, Valves, Experience, Manufactures, High Pressure, Requirements, Specialized, Varied, High Wear, Deep Mine Watering, Surface Slurry

Company description

The first DUAL VALVE was manufactured in 1983 and was developed to solve various problems on the slurry discharge pipelines. The valve works as an adjustable check valve on the discharge side of the pump, therefore protecting it against back flow and pressure.
DUAL VALVES (PTY) LTD was formed in 1984 by Gerry van Rensburg and Stephen van Rensburg and the DUAL VALVE achieved a remarkable award of wining the SHELL DESIGN AWARDS and the CHAIRMAN’S AWARD in Excellence in 1985, only one year after the formation of the company.
We are proud to be in business for 26 years and look forward to celebrating our 30th anniversary
The DUAL valve operates on the discharge side of the pump. As the flow through the pipeline starts or stops, the ball automatically rises or falls, opening or closing the valve. The handwheel is there to lock the ball in position. The handwheel can be used to isolate, but with back pressure. The Dual valve can work in the horizontal and vertical position.
FEATURES
The Dual Valve is the only proven maintenance and trouble-free slurry valve in the world with all these features
Rotating and floating ball which self-adjusts to flow.
Self-cleaning, due to the freely rotating ball.
Long ball life, due to ball rotation.
Replaces two valves: check valve and either a gate, knife gate, pinch or diaphragm valve.
Full port opening - no obstruction to the flow.
Virtually no pressure drop which eliminates water hammer.
Long seat life - seats are out of the flow and can be rotated
in-line to increase seat life fourfold.
Easy maintenance - seat and ball can be inspected or
replaced without removing the Dual Valve from the pipeline.
Indicator to show valve in open or closed position.

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