How Multiple Action Switches Work
Multiple Micro-Switches on One Stem
Two to six micro-switches are stacked on the same paddle stem assembly inside a single housing. Each micro-switch has its own independent actuating lever positioned at a different point along the stem travel.
Each Switch Trips at Its Own Set Point
As flow increases or reverses, the paddle deflects the stem. Each micro-switch trips when the stem reaches its individually adjusted set point — allowing the unit to signal different flow thresholds or directions simultaneously.
Independent or Simultaneous Adjustment
All actuation points can be adjusted independently for precise multi-threshold control, or simultaneously when a uniform offset is needed. No external relays or controllers are required — the logic is built into the switch itself.
Detection Modes
PEECO multiple action switches can be configured for three primary detection modes. All actuation points are independently or simultaneously adjustable in the field.
Flow / No Flow
2 SwitchesThe most common configuration. One micro-switch detects the presence of flow above a set threshold; a second confirms the absence of flow below that threshold. Ideal for pump protection and flow confirmation circuits.
Two Independent Flow Points
2–6 SwitchesTwo micro-switches trip at two different flow rates — for example, a low-flow alarm at 2 GPM and a high-flow alarm at 10 GPM. Each set point is independently adjustable. Useful for process control loops requiring staged responses.
Flow / Reverse Flow
2 SwitchesOne micro-switch detects forward flow; a second detects reverse flow. The paddle deflects in opposite directions depending on flow direction, tripping the corresponding switch. Used in bi-directional pipelines and systems where backflow must be detected.
Key Features
Up to 6 Micro-Switches
A single PEECO unit can house up to six micro-switches, enabling complex multi-threshold flow monitoring logic without additional external relays, PLCs, or controllers.
Independently Adjustable Set Points
Every actuation point is independently adjustable in the field. No need to return the unit to the factory — set each threshold precisely for your process conditions.
DPDT Output on Each Switch
Each micro-switch provides a DPDT (Double Pole Double Throw) output, giving you both normally open and normally closed contacts on every action point for maximum wiring flexibility.
Available on All Series & Styles
Compatible with N Series, E Series, and H Series flow switches across all mounting styles — tee, inline, wafer, and saddle. Specify the number of switches required when ordering.
Typical Applications
Pump protection with low-flow alarm and confirmation
Cooling water circuits requiring staged flow monitoring
Bi-directional pipeline flow detection
Process control loops with high and low flow thresholds
Backflow detection in water treatment systems
Hydraulic systems requiring multi-stage flow confirmation
Fire suppression systems with flow and no-flow signaling
Industrial process lines with complex interlock logic
Wiring & Configuration
Each micro-switch provides a DPDT output — both normally open and normally closed contacts are available at every action point. All set points can be adjusted independently for staged responses, or simultaneously when a uniform offset is required. No external relays or controllers are needed.
View Electrical Data & Wiring SpecsSpecifications
| Switch Count | 2 to 6 micro-switches per unit |
| Output Type | DPDT (Double Pole Double Throw) per switch |
| Set Point Adjustment | Independent or simultaneous, field-adjustable |
| Detection Modes | Flow/No Flow, Two Flow Points, Flow/Reverse Flow |
| Compatible Series | N Series, E Series, H Series |
| Mounting Styles | All — tee, inline, wafer, saddle |
| Ordering Note | Specify number of switches required when ordering |