TPi November 2016

products & developments Meeting high requirements with diaphragm valves

provides more precise flow regulation and is claimed to give double the flow rate of conventional diaphragm valve designs at a given pressure drop. The Alfa Laval DV-P cuts energy costs because of double flow rate or lower pressure drop, enabling the use of smaller feed pumps, which require less electricity to operate. Installation costs are also lower than conventional diaphragm valves due to the use of smaller pumps, valves and piping. Further savings are achieved through extended lifetime of the diaphragm, which results in longer service intervals.

closing pressure against the diaphragm. Both solutions optimise the safety of the sealing functions and prolong diaphragm lifetime. The DV-ST range includes the T- and Tank-outlet valves, available either as machined from block or forged and welded. Using the T-valve configurations made from forged bodies enables a reduction in material and operating costs. The reduction in weight (up to 62 per cent compared to conventional block solutions) also reduces stress on the piping. Furthermore, it reduces sterilisation time, while cutting energy costs and system downtime.

Alfa Laval has an understanding of the hygienic industries’ demand for reliability and equipment that supports sustainable processes. The company’s range of diaphragm valves is designed to deliver reliability in sterile and aseptic applications. The Alfa Laval DV-ST UltraPure is a compact, lightweight valve with a modular design, enabling a wide range of purpose-built configurations. The specified sulphur content is standard for all forged and block valves, safeguarding high quality weldings. With a pneumatic actuator, adjustment of the spring pressure is possible, as well as utilisation of a stroke limiter. For all handles, over-closure protection in manual operations ensures a defined

Alfa Laval – Sweden info@alfalaval.com www.alfalaval.com

The new design of Alfa Laval’s Premium UltraPure diaphragm valve (DV-P)

PP-R welding solution Ritmo’s Basic is a range of welding machines for PP-R and other plastic pipes such as HDPE, PB and PVDF, for industrial or civil use. The Italian-made machines are designed for precision and ease of use, and follow all of Ritmo’s quality standards.

The Teflon-coated (PTFE) heating plate has a built-in independent thermometer to check the working temperature, and a high-precision electronic thermoregulator, ‘Digital Dragon’, (±1°C) with digital display and regulating buttons. The system includes LED indicators to show if the machine is working normally (live tension and working temperature), and to alert the user to contingent probe failures or temperature anomalies. An extractable electric milling cutter, to face the heads of the pipes and fittings, includes a safety micro-switch and a thermal circuit breaker. The electro- hydraulic gear case is protected from

Basic 160 is a small welding machine with a working range of Ø 40 to 160mm (1" to 5" IPS), while the largest of the line – Basic 355 – is for 125 to 355mm (4" to 14" IPS). Basic 160 includes a machine body built with a supporting frame, four clamps and two hydraulic cylinders with fast, non-drip coupling connections.

crashes and atmospheric corrosion by a plastic box.

Machines from the Basic range at work on the job site

is pre-set for the connection of the electronic controller ‘The Inspector’.

The machine includes a control lever to open and close the clamps, maximum pressure and discharge valves (also useful for the ‘dual pressure’ welding process), hydraulic con- nection hoses with fast couplings, and a timer to check the warming and welding time. The machine

Basic 160 is able to weld fittings such as elbows, tees, Y-branches and flange necks, and is available in 110V and 230V versions.

Ritmo SpA – Italy info@ritmo.it www.ritmo.it

Basic 160

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Tube Products International November 2016

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