The Grundfos web portal for commercial buildings (URL below) is designed to help simplify pump selection by making available a one-stop shop for commercial build­ing-services professionals. Its scope includes the following.

Oxygen and nitrogen in waterborne systems can be bad news and can ultimately lead to system failure. Jamie Bomber has the solution

Microflex pre-insulated and flexible piping from Watts Industries is part of a renewable-energy system circulating hot water from a central plant room to eight distribution points in the £35 million Gainsborough Education Village in Lincolnshire.

Pump specialist Wilo UK has extended its online information services with a new optimised Wilo-ProductFinder, which can be accessed at the web address below. It is effectively an online catalogue that enables quick and simple access to all product information. Its design is based on customer feedback to ensure that what has been provided is what the marketplace needs.

Variable-slow systems can save serious amounts of energy. Peter Rees review how to exploit their benefits.

Aquaflow Access valves are available with a variety of regulators with different maximum flow rates to suit the needs of specific outlets — reducing the amount of hot water going to waste to cut fuel use and metered water costs. These regulators can also react to changes of pressure in a system so the same flow rate is maintained, reg­ardless of other water use in the system or its proximity to the source of supply. These valves also include a ballstop valve for servicing of outlets. A side service port provides access to the regulator without breaking the pipework or draining the system.