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• AWWA comment period on ANSI/AWWA C519 - High performance butterfly valves, 3 In. (80 mm) through 60 In. (1,500 mm)

  Mar. 23, 2018

  AWWA solicits public comments on all proposed new AWWA Standards, and on all proposed revisions, reaffirmations, or withdrawals of existing AWWA Standards. The referenced standards project is being considered for approval and the publication of this notice begins AWWA`s 30-day public comment period. An electronic public review copy of the proposed standard can be obtained for review during the comment period by emailing etssupport@awwa.org. Comments must be submitted in writing to the AWWA contact listed below no...

• Expansion Joints for Potable Water Systems

  Feb. 9, 2018

  Water is vital to life. Not only do we need access to clean drinking water, we need the ability to transport it without contamination. For this reason, there are standards that were created for pumping systems to safeguard potable water as it comes into contact with different materials during transport through a piping system. The NSF/ANSI 61 Standard for Drinking Water System Components (published in 1988) establishes the requirements for the piping and mechanical devices (pumps, valves, chemical feeders, etc.)...

• The Guide to Instrument Valves

  Dec. 14, 2017

  Instrument Valve Introduction: Instrument valve is an attachment on the pipeline, usually a micro-control device, as the media off or change the media flow. Main types of instrument valves are: needle valve, needle valve, needle gate valve, micro-solenoid valve. In order to meet the factory live, many manufacturers are developing instrument valve new features in recent years. These mainly focus on multi-pass, pressure regulation, flow regulation, zero leakage, and confluence diversion direction to make substantial...

• The Main Role of the Pressure Reducing Valve

  Dec. 14, 2017

  With the wider use of machinery fittings, the valve industry has been boomingly developed. The market demand for pressure reducing valve is greatly enhanced as well. As a result, the purchase of pressure reducing valve has aroused attention. So, how can we choose the better pressure reducing valve? The principle of the pressure reducing valve is to reduce the water pressure by the local resistance of the flow channel in the valve to the water flow. The range of the pressure drop is automatically adjusted by the...

• Rotork’s RHS solves valve access issue at water treatment plant

  Dec. 4, 2017

  Recent rehabilitation at the drinking Water Treatment Plant #2 in Olathe, Kansas, USA, has included the installation of Rotork IQ3 intelligent electric valve actuators to replace electric actuators from another manufacturer. In the gravity filter plant, 18 butterfly valves are situated in an area beneath a walkway which made it difficult to access and operate the old actuators. With the new Rotork actuators, the installation of Remote Hand Stations (RHS) has now eliminated this problem. Providing an exact...