IT’S been ten years since Macnaught began selling oil pumps with pressure relief valves inbuilt, but most of its competitors still haven’t followed suit.
Graham Letters, Technical Services Manager for Macnaught said it’s surprising given the popularity of the integrated products.
“If you build the pressure relief valve into the pump itself, you do away with the need for the customer to buy one to install separately into the system — so you’re saving the customer money. It definitely helps to sell the pump when you tell customers the valve is incorporated,” Letters told FEN.
Pressure relief valves are a requirement in any new pump installation. Without one, excess pressure on a delivery line can lead pipes to blow. The cost of buying and retrofitting a pressure relief valve is often around $100.
To make things simpler for the customer, Macnaught invested a considerable amount of R&D into redesigning its oil pumps to incorporate pressure relief valves. The valves work in exactly the same way, and deliver the same level of performance as retrofitted pressure relief valves, only they are completely embedded within the pumps. When line pressure exceeds a presetting of 1000psi for instance, the valve opens up and allows a small amount of oil to bleed down into the tank. Once the pressure falls below the set pressure, the valve shuts and the pump works as normal.
This integration is now available in Macnaught’s heavy duty R500 (5:1 ratio) and R1000 (10:1 ratio) pumps, and in its T312 (3:1 ratio) and T512 (5:1 ratio) oil pumps. These have been popular for a wide range of applications involving bulk oil transfer, including in heavy manufacturing, earth moving, the automotive servicing industry, mining and agriculture.
Macnaught’s pumps come with a ten year warranty and the company claims they are very economical compared to others pumps on the market. They are all manufactured in Australia by this sixty-year-old Australian owned company.
www.macnaught.com.au
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