Flow Switches Made in the U.S.A.

PEECO N Series Flow Switch

PEECO N Series Flow Switch

For Non-Hazardous Locations with Maximum Allowable Pressure to 600 PSI

For Liquid or Gas Service

PEECO N Series Flow Switch
PEECO N Series Flow Switch

PEECO N Series Flow Switch is a flow actuated electrical Switch and is unique in the field of flow controls. Our switches are not a standard shelf item, but are specifically produced to accommodate your application. The flow switches are maintenance free in lines from 1/16″ to 12′ or larger.  Encompassing all the features and reliability of our more popular Explosion Proof models, these units are furnished with a slip-on steel cover. This .062 thick housing is NEMA 4X weather proof, by utilizing a special “O” ring seal fitted into a mechanical groove in the body; a standard on all of the non-explosion proof models. The housing & cover are both made of heat treated aluminum T-356 and are epoxy coated (for extra protection). Each of the four basic styles shown are adaptable to many other fittings and configurations.

Actuated by flow – not pressure. No need to be concerned with minimum and maximum flow … you state your requirements, Peeco will accommodate them. From -450° F to +1500° F. From high vacuum service to 600 psi. Fully field adjustable over the entire range (less than 10% dead band/differential between make and break).

The desired flow indication – increase, decrease, reverse – is transmitted mechanically from the line media by deflection of the paddle through the stem and bellows or flexure tube assembly, causing micro-switch actuation and resultant electrical contact for transmission of signal to whatever ultimate point desired.

The flex (bellow or tube) is silver brazed or welded, per your specification, making the Peeco switch inherently leak proof, without employing packing glands or stuffing boxes.

Our trained technical staff is available (at no cost to you) for consultation, design suggestions, engineering, layout problems or a general discussion of PEECO flow actuated electrical switches and their place in the dynamics of flow.

Standard Specifications:

Cover: Heat Treated Aluminum 356-T6
Housing: Heat Treated Aluminum 356-T6
Body: Carbon Steel or 316SS
Bellows: Seamless 321 Stainless Steel
Stem Paddle: 302, 303 Stainless Steel
Bearings: 440C Stainless Steel Micro Ball
Name Plates: Aluminum
Micro Switch: 15A, 125-250-480 VAC SPDT 1/2 A., 125VDC (1 N.O., 1 N.C., 1 Comm.)
Conduit Connection: 1/2” FNPT
Maximum Pressure: 600 psi (41 Bar)
Maximum Temperature: 300° F (148°C)

Some of the options commonly added to the N Series flow switch include:

Available PEECO Models

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.
(specify distance from face of mounting flange to top i.d. or c/l of pipe and pipe size)