McDonnell & Miller Flow Switches

FS4-3 Series General Purpose Flow Switches -- $111

* Maximum pressure, 150 PSI

* Maximum temperature, 300°F

* Minimum temperature (fluid or ambient) 32šF

* Serves a wide variety of applications in air-conditioning, heating, water systems, and in processing work - wherever it is important to know when flow or no-flow occurs

* Switch: Single-pole, double throw Compact in size. Snap action assures dependable operation

* Adjusting Screw: Provides simple way to field adjust sensitivity to flow

* Packless: Monel bellows seals switch assembly from line

* 3-in-1 Paddle: Individual monel paddles are quickly adaptable for 1" to 3": pipe

FS7-4 Series Industrial Application Flow Switches -- $311

* Now available in NEMA 4X (Watertight, Dust-tight, and Corrosion Resistant) Models; NEMA 7 and 9 Models (Hazardous Location); and Standard Models

* Available in either Brass or Stainless Steel construction

* Models FS7-4W and FS7-4SW (NEMA 4X) are ideal for outdoor use in ambient temperatures and/or fluid temperatures as low as -65°F

* Models FS7-4E and FS7-4E (NEMA 7 & 9) are Underwriters' Laboratories, Inc. Listed for use in Hazardous Locations

* Standard Models may be ordered in both single and double switch versions

FS8W Series General Purpose Flow Switch -- $150

* Maximum pressure 150 PSI

* Maximum temperature, 225°F

* Minimum temperature (fluid or ambient) 32šF

* NEMA 4X (Watertight, Dust-tight, Corrosion Resistant) construction

* Particularly suited for use in areas of high humidity, and out-of-doors installation

* Individual paddles are adaptable for pipe 1" to 3", extended paddle for pipe to 6" is also included

* Installs in tee or welding neck in horizontal pipe; 1" threaded connection

AF1 Series Air Flow Switches for Duct Installation Medium and Higher Velocity -- from $168

* Maximum temperature 300°F; Minimum temperature 32°F

* Designed for medium and higher velocity systems

* AF1 units have a single-pole double-throw switch, can be wired to make one circuit, break a second circuit, when air flow starts or stops in a duct

* Can be installed in the side, top or bottom of a horizontal duct and, if necessary, in a vertical duct with upward air flow. If the only possible installation is in a vertical duct with downward air flow, contact Inotek for instructions, giving duct size and air flow velocities

* Stainless Steel; parts exposed to inside of duct are made of 18-8, 302 and 316 stainless steel, and Viton(R)

* Switch compartment is sealed from duct by a Viton flexible rolling seal; this is a completely tight seal

FS1 Series High Sensitivity Flow Switches -- $188

* FS1 offers an economical and dependable answer for many jobs inside buildings, such as air conditioning, heating/water systems and processing work

* FS1-W adds versatility to those characteristics by allowing use outdoors and in environments where humidity or airborn particles are a problem

* May be used with water, certain light, viscous liquids, fuel oil, and some oils

* Switch mechanism is magnetically activated and has no physical contact with the liquid

* Switch compartment is totally sealed from the liquid in the line and all wetted parts are brass, stainless steel, and viton

* Threaded 1/2" on both inlet and outlet sides and requires no further pipe fittings

* FS1: Maximum pressure 100 PSI.; Maximum temperature 225°F; NEMA 1 Enclosure; Minimum Fluid/Ambient Temperature 32°F

* FS1-W: Maximum pressure 100 PSI.; Maximum temperature 225°F; NEMA 4X Enclosure; Minimum Fluid/Ambient Temperature 32°F

Viton(R) is a registered trademark of DuPont Dow Elastomers.

	McDonnell & Miller General Catalog
	All files shown below are in PDF format, viewable with Adobe Acrobat Reader. Acrobat Reader is available free from Adobe Systems Inc. Download Adobe Acrobat Reader.
	System Selection Chart Basic System Operation Products Boiler Controls Low Water Cut-Offs Water Feeders Replacement Head Mechanisms Switches Valves Flow Switches Liquid Flow Air Flow Flow Switch Time Delay Relays Liquid Level Controls Conductance Actuated (Probe Type) Float Actuated Pneumatic Float Actuated Technical Information and Specifications Basic Wiring General Information CE Conformance Conversions & Formulas Approval Agencies Glossary of Terms Warranty & Return Policy Maintenance

Series PS-800 Low Water Cut-offs Improved Changes to our Series PS-800 Low Water Cut-offs make them easier to install and troubleshoot, and prevent nuisance shutdowns. The PS-800 controls protect against low water conditions for steam and hot water boilers in residential, commercial and industrial applications. New features include:
User-friendly diagnostics to save time and ensure proper operation A test feature to diagnose grounding problems at installation Increased probe sensitivity to prevent nuisance shutdowns.