Note: Not all regulatory requirements
are available in all size/model combinations (consult with factory).
Approvals provided upon request. |
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Internal Drop Check
The Internal Drop Check (IDC) assembly is a spring assisted, silent, mechanical check option for standard Singer main valves. (Also called the “Sliding Inner Valve”) Main valve fully open: Diaphragm and inner valve assembly controlled by the pilot system.
The following documents are presented in PDF format
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