Mô tả
General
Used for observing the state of fluid flow depending on opening & closing of the flapper on fluid flow.
Speciality
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A spring stops an at the inlet mounted flapper from opening unintentionally. This allows its use for all flow directions.
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Flapper, pin & spring are made of stainless steel.
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Glass is strengthened and tested for pressures up to 45 kg / cm².
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