Utilizing a single moving part which responds to fluid (liquid or gas) flowing within a system, the M-55 Series Fixed Set Point Flow Switches monitor increasing and decreasing flow. When triggered, the M-55 Flow Switch will be within 10% of the desired set point, with repeatability of 5%. These piston flow switches are suitable for a wide range of industrial applications due to their many available materials of construction, including acrylic, aluminum, PTFE, PPE and stainless steel. The flow switches operate only when fluid flow is positively established.The M-55 Series Flow Switches include configurations available for single-pole, single-throw (SPST) or single-pole, dual-throw (SPDT) allowing for flexibility with different outputs for both the high and low set point. All Malema Fixed Set Point Flow Switches can have their own customized set points calibrated at the factory before shipping. Additionally, Malema offers pre-calibrated set point ranges for applications that do not require a custom calibrated range.