CONSTANT & INTERMITTENT PUMPS Gomco® constant and intermittent pumps provide exceptional versatility through a unique vacuum capability. This new concept utilizes a diaphragm vacuum source with an automatic lock feature that maintains a separate collection system for the two mode selections (constant or intermittent). UL/ULC listed. MODELS 6036/6037 These pumps provide suction for all routine suction procedures with one versatile mobile vacuum source. Operation is simple and consists of four basic steps: Set the mode switch to Constant or Intermittent Set the Intermittent timing, if needed Turn on the power Adjust the vacuum level