Flow Switches Made in the U.S.A. · Serving Industry Worldwide
PEECO Series Selections
N Series
Flow Switch
Non-Explosion Proof
Flow-actuated electrical switching for non-hazardous locations. Up to 600 PSI, liquid or gas service. Custom-produced to meet the exact requirements of each application.
NEMA 4X Weatherproof
.062″ thick slip-on cover with O-ring seal. Heat-treated 356-T6 aluminum housing, epoxy coated for corrosion resistance.
True Flow-Actuated
Actuated by fluid velocity — not pressure. Less than 10% dead band between make and break. Fully field adjustable across the entire operating range.
Leak-Proof by Design
Bellows or flexure tube silver brazed or welded per application requirements. No packing glands or stuffing boxes required.
Technical Data
Standard Specifications
Operating Range
Extreme Capability
Engineering Support Included
PEECO's experienced technical staff is available at no cost for application consultation, engineering and layout support, and design optimization.
Available Models
Four Basic Styles
Model NT-F
Connection: Wafer Tee. Standard Size: 2″ 150# or 300# R.F. Optional: Any size, style and rating. Line Size: 2″ and under (standard) over 2″ (optional). Also available in low and low-low flow models.
Model NT
Connection: Screwed Tee. Standard Size: Specify Size. Optional: Socket-Weld, Butt-Weld. Line Size: 2″ and under (standard) over 2″ (optional). Also available in low and low-low flow model.
Model NP-S
Connection: Screwed Top Mount. Standard Size: 1-1/4″ npt. Optional Size: Any other size. Line Sizes: 2½″ and up.
Model NP-F
Connection: Flanged. Standard Size: 2″ 150# or 300# R.F. Optional Size: Any size, style and rating. Line Size: 2½″ and up.
Why PEECO
N Series vs. Standard Flow Switches
| Feature | Standard Flow Switch | PEECO N Series |
|---|---|---|
| Actuation Method | Often pressure-based | True flow-actuated |
| Application Flexibility | Fixed limits | Custom-engineered per application |
| Maximum Pressure | Typically ≤ 300 PSI | Up to 600 PSI |
| Line Size Capability | Limited | 1/16″ to 12″ and larger |
| Adjustment Range | Narrow | Fully field adjustable across full range |
| Dead Band / Differential | High or undefined | <10% make/break differential |
| Leak Prevention | Packing glands / seals | Welded or brazed bellows — inherently leak-proof |
| Environmental Protection | Basic enclosures | NEMA 4X weather-tight enclosure |
| Engineering Support | Limited or none | Included technical consultation |
Ready to Specify Your N Series Switch?
Contact our engineering team for application consultation and pricing. Every unit is custom-built for your exact process conditions.