Description Manuals Videos Articles Popular Accessories Clemco Part #30417 White color coded washer found on the "differential pressure IN (-)" connector on the control assembly for the Clemco Pulsar Plus 55-S. Item #14 See the bottom of the product manuals for diagrams of additional compatible products. Pulsar Plus III-P and VI-P Operation Manual Pulsar Plus III-S / III-S6 / VI-S Operation Manual