It is common practice in the ammonia refrigeration industry to install a three-way isolation valve upstream of relief valves protecting an ammonia refrigeration pressure vessel. For vessels larger than 10 ft3, this is required by most model codes and standards. These three-way valves allow a relief valve to be replaced without the hassle of pumping […]
Here are some excerpts from the most important ammonia stories over the past week… An Ammonia Fueled Car From South Korea – South Korean researchers have successfully road-tested a dual fuel passenger car that runs on a mixture of ammonia and gasoline. It is called the AmVeh and was developed by members of the Ammonia Research […]
On June 21, 2013, Hansen issued a product recall on the following pressure relief valve models with serial numbers between 02B11 and 04B13: Hansen H5600A, H5601, H5602, H5600R, H5602R, and H5632R. These pressure relief valves (sold from February 16, 2011 to April 4, 2013) appear to be more susceptible to internal corrosion when exposed to standing water inside […]
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