TOMOE DELIVERS TOTAL STABILITY WITH 847T RANGE

– Butterfly valves for consistency in extreme and hazardous conditions

Tomoe Valve Limited, a global leader in the design and manufacturing of valves and process control systems, has enhanced its revolutionary 847T range of chemically resistant butterfly valves as part of the company’s ongoing product development programme. The extended 847T range benefits from vastly improved sealing performance and strength, and minimal torque under hazardous conditions.

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The Tomoe 847T range is used across a wide spectrum of industries including chemical processing, water treatment, food processing and vehicle manufacture.  The unique construction of the new Tomoe 847T range provides superior strength and unique sealing properties essential in applications where conditions are potentially hazardous such as, chlorine, gas, corrosive acids, steam, brines and high purity systems. The range is also suitable for cooking oils, cooling water systems and vehicle paint plants.

The unique seat construction was designed and developed to ensure that there is no mechanical bond between the rubber seat support and the Teflon lining material, eliminating problems of separation and high or variable torque caused by expansion of the lining. As a result, the new range provides stable conditions during the valve operation. Manufactures using an injection moulding method and utilising the properties of Teflon at a minimum thickness of 3mm, allows the seamless construction of the 847T valves. This seamless lining delivers complete stability in all conditions including temperature cycling. It also eliminates common problems that occur with conventional valves, where permeation of fluids and gases, particularly at high temperatures, can occur.

The upper and lower stem housings of the 847T range have the same length, high tension coil springs, which provide equal and consistent loading on the sealing mechanism, important under variable temperature conditions. Total sealing in the valve structure is achieved by primary, secondary and independent tertiary seal, through the gland packing design. There is also a fourth seal of dust seal O-rings on the top and bottom shafts.

Also available from Tomoe is a specialist range of actuation packages that are ideally suited to match the operating requirements of the 847T range of valves.

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