079 HPM 0415

HPM April 2015

PIPES, PUMPS, VALVES & FITTINGS DURAPIPE REVEALS THE FINDINGS OF ITS RESEARCH INTO PIPEWORK SPECIFICATIONS, SPIROTECH DISCUSSES THE ISSUES ASSOCIATED WITH DIRT, PEGLER YORKSHIRE EXPLAINS WHY PUSH METHODS CAN BE MORE WIDELY APPLIED AND SALAMANDER’S HOME BOOST PUMP IS INSTALLED Powering up enquiry number 158 enquiry number 156 HEATING & PLUMBING MONTHLY APRIL 2015 79 Disappointing shower performance can be a thing of the past when fitting one of Stuart Turner’s range of UK manufactured shower and whole house water pressure boosting pumps which now come with industry leading guarantees as standard. Stuart Turner manufactures a range of shower and whole house water pressure boosting pumps to suit different budgets and application demands. Each product range comprises a number of options, including different pressure outputs, a choice of single and twin head pump options and variants suitable for both positive and negative head installations. Every Stuart Turner pump is individually tested, ensuring they all leave the factory to the same standards for which Stuart Turner has become recognised. As testament to this reputation, the length of the standard guarantees supplied has been increased to an industry leading five years in the case of the Monsoon range and three years for the Showermate, Showermate Eco and Techflo qt ranges. Grant Ellis, commercial director for Stuart Turner, said: “Our pumps have long proved exceptional in terms of reliability and we thought it was time to pass on our confidence in the design and manufacture of our products to provide meaningful and tangible benefits to our customers when investing in the Stuart Turner brand.” Reliance Water Controls (RWC), the brand at the forefront of thermostatic (TMV) technology, has introduced the Ausimix Compact range of thermostatic mixing valves. These TMVs have TMV2 and TMV3 approval and are made from nickel-plated DZR brass, with high quality internal fittings. Safety is paramount with the Ausimix Compact range, which offers a stable mixed water temperature and features a failsafe for protection against scalding or thermal shock on either hot or cold supply failure. Approved by BuildCert under both the TMV2 and TMV3 schemes, the range is ideal for both domestic and healthcare environments being Part G and NHS MES D08 compliant. The range is also WRAS approved. Ausimix is available in two versions, the two in one and the four in one, both in a choice of 15mm or 22mm pipe sizes. The compact body of the Ausimix valve assists with installation, even in restricted spaces, and the additional option of a two in one model with Telescopic Union Connectors gives even greater flexibility for retro-fit applications, permitting 10mm of flexibility on both inlets. Furthermore, there are also two in one and four in one versions available with SharkBite pushfit ends for even quicker installation. Each valve is factory set at 38°C with a temperature setting range of 38°C–46°C, hot supply of between 52-65°C (max 85°C) and a cold supply of 5-25°C. The Ausimix is designed to work at flow rates as low as 4lpm and to withstand maximum working pressures of up to ten bar. Salamander redesigns centrifugal range enquiry number 157 Compact and versatile Ausimix valves Following the complete redesign of the CT range, Salamander design engineers have turned their attention to improving its centrifugal range of shower and whole house pumps. The latest improvements apply to the Right Pump ranges RSP, RHP and RGP and the ESP CPV range, all of which cover a wide number of solutions for positive or negative head installations as well as options for shower pumps or whole house pumps, supporting either a single or multiple outlet. Centrifugal action within the pump basically pushes incoming water radially outwards from the centre of a rotating impellor to deflect the water onto fixed blades. Water pressure increases at each stage before reaching the outlet. This water pressure increase relies on failsafe compression between the inlet and outlet components, which are bolted together. Previously, in extreme conditions, the effect of increased water temperature in the chamber, coupled with increased pressure, could cause the plastic (Acetyl co-polymer) to flex. Caused by the pump running in a closed head position, or at temperatures greater than 65ºC, this movement of micro millimetres could cause the O-ring to displace and initiate a leek. The design solution resembles a spider’s web that has a great tensile strength and elasticity. Its microstructure of radials and spirals has been applied by Salamander for the first time in shower pump design to maximise rigidity, but also to retain the moulding properties of plastic.


HPM April 2015
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