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Armstrong Pumps Inc.: Circuit Balancing Valves

March 4, 2004
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The 1/2- to 2-inch circuit balancing valves (CBVs) have five full 360-degree turns from open to closed. These sizes of the CBVs can be installed with measuring ports up or down. The valves are designed to be selected based on line size. According to the manufacturer, the precision-machined venturi-style orifice provides ultra-stable pressure signal, resulting in significantly higher balancing accuracy than traditional CBVs. The "hidden" memory set screw can be adjusted without removing the handle cap. The valves feature a nonrising handle design, so the overall valve height remains the same from fully open to fully closed. The "triple-seating" O-rings create a pressure gradient barrier through the stem for leakage protection, the company states.

Armstrong Pumps Inc., 93 East Ave., North Tonawanda, NY 14120-6594; 716-693-8813; 726-693-8970 (fax); www.armstrongpumps.com.

eProduct #186

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