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100mm ASME 150 / ANSI 150LB dual plate check valve, wafer style that fits between two DN100 (4″) ANSI 150LB flanges to stop and prevent backflow in a pipeline. Available from DEWATER PRODUCTS in Perth, Western Australia, email: firstname.lastname@example.org
DEWATER PRODUCTS is a Perth based pipeline valve supplier, supplying valves not only in Perth and Western Australia but also nationally to all industries. Visit https://dewaterproducts.com.au/
Dual Plate Check Valve available in size DN40 to DN1200 is a check valve where two discs hence the word dual, which are the movable parts will block the flow, moving backwards via a spring, either onto the seats to block reverse flow or off the seats to allow forward flow. Connection is can be wafer or flanged fitted between two pipe flanges. Check valves will protect your pump and drive system from reversing, preventing reverse flow from the fluid you are pumping. The dual discs will only open in one direction that being forward flow. The force of the fluid being pumped will open the dual discs, and they are connected to a spring. This spring has a self shutting function, so if there is nothing in the pipeline, the discs will be swung closed. The spring force is not too great that it hinders any flow efficiencies in the pipeline. The life span of the spring will be greatly increased if it is made from 316 stainless steel, the spring is probably as important and the sealing surface which will help prevent any fluid from leaking past the discs and sealing. Seal and seat materials vary, being Resilient seat or hard metal, Viton is excellent for hard wearing.
Dewater Products supply Dual Plate Check Valves in all sizes, types and classes.
Tom Bleier, Vice President, QuakeFinder Humanitarian R&D Project For thirty-seven years Tom Bleier has developed, built, and tested complex defense and commercial satellites and ground control systems. Early in his career Tom became interested in understanding the physics of the pre-earthquake process. Based on the theories developed by Stanford University scientists after the Loma Prieta earthquake and the USGS observations of earthquake lights, he developed ultra-low frequency (ULF) magnetometers to detect electromagnetic signals at the onset of large earthquakes that may provide the key to understanding the warning signs of deadly seismic hazards. What started as an educational outreach program, donating time and materials for the ULF magnetometer kits to a handful of high-schools, has expanded over the last decade into a web-based network of over 110 sensors that detect and record ULF background signals—looking for earthquakes.
Can We Forecast Earthquakes Yet? – The Electomagnetic Aspects of Earthquakes – What are the Physical Processes Involved? – Are “Short Term Forecasts” Possible? – QuakeFinder’s Use of Electromagnetic monitoring to detect quakes 1-14 days prior. See https://www.quakefinder.com/