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The simple essential is that the leak rate must be low enough that the required operating pressure, gas balance and ultimate pressure in the vacuum container are not influenced. One of these is a set of leakage tests performed at several gasket stress levels, with one internal pressure which can vary from test to test. Understanding damper leakage rates and leakage classes enables specifiers, contractors, and building owners to identify the correct damper products
Th e underlining goal is to determine how much leakage is too much and to specify an appropriate leakage rate that results in minimal leakage at minimal expense Within en 13555, there are several test procedures defined Th e designer should carefully consider the following information in establishing allowable leakage specifi cations
Does table 1 look familiar?
But a pressure decay style leak detector, while more expensive, will accurately accomplish a test of that leak rate and at speeds required of the high speed process. Leak rates do not have to be this high Adherence to best practice in service, maintenance leak testing and repair can significantly reduce refrigerant losses This guide shows you how.
This means that low leakage dampers are much more effective at preventing air from escaping through the damper when it is closed, resulting in improved energy efficiency and lower operating costs.
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