Description
The ChemTec FSB1022-185 is a non-adjustable brass flow switch. It uses a magnetic piston to actuate a hermetically sealed reed switch, providing highly reliable flow monitoring with virtually no maintenance required. The device outputs an electrical signal when the flow drops below the preset value, making it ideal for equipment protection and system interlocks.
Key Features
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Material: Brass, durable and suitable for water and most non-corrosive liquids
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Non-adjustable design: Factory preset flow point, simple to use
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High reliability: Single moving part, low maintenance, long service life
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Easy installation: Recommended vertical mount (inlet down), use with 100-micron filter
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Wide application: Cooling water loops, laser systems, heat pumps, pump and compressor protection
Technical Specifications
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Model: FSB1022-185
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Flow set point range: approx. 1.9 ~ 21.8 LPM (0.5 ~ 5.75 GPM), depending on factory calibration
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Port inner diameter: ~22 mm (3/4″ piping)
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Max working pressure: 250 PSIG (≈ 17.2 bar)
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Temperature range: 0 °C ~ 104 °C (32 °F ~ 228 °F)
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Output type: Reed switch (SPST or SPDT, NO/NC options available)
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Electrical ratings:
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DC: up to 250 V / 50 W / 1.5 A
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AC: up to 265 V / 50 VA / 1.1 A
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Repeatability: ±2%
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Calibration accuracy: ±10%
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Drop-out differential: approx. 10%
Applications
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Industrial cooling systems
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Laser equipment cooling protection
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Heat pump and HVAC systems
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Lubrication and liquid flow monitoring
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Pump and compressor dry-run protection
