PEECO H Series Flow Switch

PEECO H Series Flow Switch

Hazardous Locations with Maximum (Optional) Pressure to 10,000 PSI

For Liquid or Gas Service

The PEECO H 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, they are specifically produced to accommodate your application. The flow switches are maintenance free in lines from 1/16″ to 12′ or larger. The PEECO H Series flow switch utilize a ¼” thick Heat Treated aluminum cover with 5 fully engaged threads, all units are designed to encapsulate any internal explosion. In lieu of a bellows assembly a solid rod extends through a flexure tube brazed or welded into a S.S. ball fixture. Unit has been successfully field tested up to 10,000 psi. Wall thickness of the flexure tube will vary with pressure requirements. This model is recommended for all pressures over 600 psi. 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 10,000 psi. Fully field adjustable over the entire range (less than 10% dead band/differential between make and break).

Explosion proof models are approved by Canadian Standards Associate, City of Los Angeles, Institute National des Industries (Belgium), French Approval I.C.I.E. and the U.S. Army Corp of Engineers. Electrical by Underwriters Laboratories.

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.

Standard Specifications:

Cover: Heat Treated Aluminum 356-T6
Housing: Heat Treated Aluminum 356-T6
Body: Carbon Steel or 316SS
Flexure Tube: 316 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)

How Does a PEECO H Series Flow Switch Work?

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 flexure tube assembly, causing micro-switch actuation and resultant electrical contact for transmission of signal to whatever ultimate point desired.

Base travel of the PEECO H Series flow switch stem is from 1/16″. Standard Micro-switch travel is approximately .005″

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.

Available PEECO Models