The non-freezing check valve (KO) is used for gas bypassing from the annular space of the fountain fitting to the outflow line and preventing overflows of the produced medium into the annular space. The main advantages: the shut-off body ball - seat is in the flow of the produced medium (non-freezing); possible adjustment of the discharge pressure from the pipe (setting the set trigger pressure in the process of production); shut-off body is made of stainless steel; easy disassembly and assembly.
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