FS4-3 Series General Purpose Flow Switches from $90

• Maximum pressure, 150 PSI
• Maximum temperature, 300°F
• Minimum temperature (fluid or ambient) 32°F
• 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 from $239

• 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 from $123

• Maximum pressure 150 PSI
• Maximum temperature, 225°F
• Minimum temperature (fluid or ambient) 32°F
• 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 $129

• 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® (Registered trademark of DuPont Dow Elastomers)
• Switch compartment is sealed from duct by a Viton flexible rolling seal; this is a completely tight seal

FS1 Series High Sensitivity Flow Switches from $145

• 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® (Registered trademark of DuPont Dow Elastomers)
• 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