Broen, a precision valve specialist in the HVAC segment, says its recently introduced double regulating valves have already been successfully specified and installed in the region.

01 April 2008

Broen, a renowned manufacturer of precision valves for HVAC (heating, ventilation and air-conditioning) applications, has recently introduced on the Middle East market its Broen Ballorex Venturi, which it describes as a new and more accurate double regulating valve (DRV).

These valves are used for balancing of water-based cooling systems, to ensure an evenly distributed flow in individual risers and terminal units, with typical applications including central or district cooling systems, as well as fan coil units, in high-rise buildings.
“Broen Ballorex Venturi has, for some years now, proven itself in the demanding European market and the focus is now turned towards the large number of cooling applications in the Middle East market. While the product has only been recently introduced to the Middle East, the first projects have already been successfully specified and installed,” says Troels Kristiansen, export sales manager of Broen who is currently expanding the company’s distribution network in this area.
While the design of DRVs has remained the same for years, the new product represents the next generation in balancing valves for water-based cooling systems, according to Kristiansen.

Design objectives
According to Broen’s development manager Mads Lildholdt, Broen Ballorex Venturi valves are based on three main design objectives.
He explains: “The valve should be accurate in order to balance a system efficiently and thereby reduce the energy consumption; it should be simple and fast to commission in order to reduce the commissioning time required; and it should also be compact and easy to build-in in order to meet the limited available space installation requirements. These design objectives are the distinct advantages that our new valve range offers compared to other DRV valves in the market.”
The Broen Ballorex Venturi valves range in size from DN 15 to 300 and are compact, having flow measuring, regulation and isolation functions all in one unit. It offers perfect balance by accurate measuring as it is based on the well-known Venturi principle, where flow is measured by registering the pressure difference through a fixed Venturi orifice. The trumpet-shaped design of the Venturi nozzle creates a higher measuring signal without the pressure loss associated with more conventional orifice plates or seat type of valve, Lildholdt explains.
“The controlled flow and the higher measuring signal generated enables the valve to have consistent measuring accuracy surpassing plus or minus 3 per cent across the entire flow range. This makes it more accurate than other commissioning valves in the market which have a variable accuracy of a plus or minus 15 per cent down to five per cent depending on the setting of the valve, Lildholdt adds.

Easy regulation
By using a fixed orifice Venturi nozzle to meter the flow, the Broen Ballorex Venturi has only one Kv-value for each valve size - which is a distinct advantage as regulation can be done simultaneously with measuring, making the setting fast and easy. Other commissioning valves measure across the valve seat causing the Kv-value to change every time the setting is changed, which makes the commissioning more difficult and more time consuming, he points out,

Flexible installation
When using the Venturi nozzle, there is no need for 3-5 DN lengths of straight piping before and after the Broen Ballorex Venturi (DN 15-50) when installed to obtain an accurate reading. Installation can be done right next to bends, reducers or flexible hoses. “This is a unique advantage when compared to other commissioning valves that require the mentioned straight piping,” Lildholdt states. “The Broen Ballorex Venturi can, at the same time, be installed in any position needed without affecting the measuring, setting or operation of the valve.”
In addition to the Broen Ballorex Venturi, Broen’s product range also consists of a wide range of various Ballofix and Ballomax ball valves such as a lockable ball valve, which are also sold into the Middle East markets.
Since its foundation in 1948, Broen has set the highest standards for safe and efficient systems that regulate the flow of natural resources and its products are used in plumbing, heating and ventilation, district heating, laboratory and safety equipment. It is a part of the Dutch group Aalberts Industries, which also includes other Europe-based companies such as Pegler, Comap, VSH and Yorkshire among others. The company is a global leader within the business areas of building installations, building controls, district heating and gas, laboratories and emergency shower systems.

• LG ‘revolutionises’ residential market
• Broen’s new valves make Mideast debut
• Innovations in store as EHS unleashes Titans

Tags

Dubai Expo News Events UAE Focus Projects Loaders Expo News - gulfBID 2008 Legally Bound Regional News Concrete Technology Air-conditioning & Refrigeration Sustainability Focus Face to Face Tenders Expo News - Batimat

Gulf Construction is the undisputed leading trade journal for the building and construction industries of Saudi Arabia and the other Gulf states. The magazine provides editorial coverage on a wide range of topics which are of interest to industry professionals. In addition, regular features highlight technological developments within specific industry fields. Launched 40 years ago, the magazine has established an enviable reputation as an authoritative, respected journal with unmatched coverage of the Gulf region. Gulf Construction is essential reading for anyone with a serious interest in the region’s building and construction industry.