November 2011 Tech Update

Nov. 1, 2011
Commercial and Residential Valves: Air, Check, Balancing, Shut-off, Discharge, Expansion, Flow Control, Gate, Line, Metering Mixing, Needle, Pressure, Purge, Relief, Reversing, Solenoid, Temperature and Zone Control.

The Electronic Pressure Independent Valve (ePIV) is designed for use with building automation systems to perform control and energy-management strategies. It directly measures flow by combining a magnetic flow meter and a two-way control valve. An actuator modulates the control valve to maintain flow regardless of pressure variations, and the flow reading is reported back to the controller. The product range consists of 2-in. to 6-in. valves.
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The 700 Series and 900 series globe-style check valves are designed to eliminate water hammer and operate smoothly and silently. The valves features a center-guided single disc and bronze-to-bronze seating with a stainless-steel spring control to ensure positive, noiseless opening and closing.
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Johnson Controls
The V-3000-8011 and V-3000-8003 pneumatic valve actuators by Johnson Controls, are designed to accurately position steam or water valve modulating plugs in response to a pneumatic signal from a controller. A V-9502 valve pilot positioner can be ordered separately (V-3000-8011 only) for use in applications where sequential operation is desired or additional positioning power is necessary. The actuators have a molded synthetic rubber diaphragm design. This molded diaphragm provides a constant effective area throughout the actuator stroke. All parts are protected by a sturdy die-cast aluminum housing.
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Mueller Refrigeration
Mueller’s Cyclemaster™ series of actuated ball valves feature exclusive MCM™ seal technology, which provide low leak rates, even after hundreds of thousands of cycles, sources say. Precision dual bearings and blowout-proof stems are engineered for extended life cycles that far exceed industry standards. Cycle Master™ valves feature a full-flow ball port design to match line size I.D., thereby minimizing pressure drop and increasing flow and system capacities. The gradual operating characteristics of the ball valve eliminates line hammer and system pulsations typically associated with solenoid-operated shut-off valves.
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Honeywell has introduced new pressure-regulated flow control valves for commercial hydronic applications. The valves represent an important tool for contractors seeking to provide superior energy efficiency, comfort, and ease of use in schools, hotels, hospitals, office buildings, and other settings.

Honeywell's pressure-regulated flow control valves integrate a dynamic pressure-balancing cartridge with a control valve. The dynamic pressure-balancing cartridge ensures that the flow-through valve stays at design flow for maximum comfort and system efficiency.
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The Vic-Ball® valve is a high-pressure, standard-port ball valve with grooved ends. Its internal design has been streamlined to provide excellent flow characteristics, and comes available in ductile iron and stainless steel versions. A three-port diverter ball for redirecting flow 90 degrees left or right is available for carbon steel or stainless steel piping systems. Vic-Ball valves are sized 11/2 to 6-in. depending on body construction type. A 1/4 to 2-in. threaded brass ball valve is also available for a variety of services.
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For its slimline type GBC ball valves, Danfoss guarantees that leakage will not exceed .04 oz. per year. Each valve is helium leak tested at the Danfoss factory to ensure that customers receive a valve with the least possible leak potential. The valves also offer minimum pressure drop and full bi-directional flow.

The slimline design makes a valve that is not only lighter, but also easier to install as a replacement when valves and piping are close together, sources state.

The GBC valve seat of specially formed Teflon® ensures maximum tightness in the closed position. The screw-on stem cap also has a Teflon seal. The valves have a burst-proof spindle and working pressure of 650 psig (test pressure 940 psig), making them suitable for R-410A as well as other fluorinated refrigerants.
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