
Product Description
The P397 is a compact and reliable inline piston flow switch engineered for precise monitoring of flow in liquids and gases. Built with rugged stainless steel or aluminum housings, it delivers dependable performance with minimal pressure loss. Ideal for HVAC, lubrication, and cooling systems, the P397 is available with or without LED indication and offers multiple connection options, making it a versatile solution for a wide range of industrial applications.
Product Highlights
- Supports flow monitoring from 0.16 to 18.5 gallons per minute, accommodating a variety of application needs from low to high flow conditions
- Suitable for liquids and gases, including water, oil, air, and other fluids—making it perfect for use in compressors, CNC machinery, lubrication systems, and more
- Visual confirmation of switch status with optional 24 VDC LED indicator, enhancing diagnostic and troubleshooting efficiency
- Ensures minimal pressure loss (approx. 4.35 PSI at 6.6 gpm), contributing to energy-efficient system operation
- Supports both NPT and G-thread connections ranging from ¼” to 1”, simplifying integration into various piping systems
- Rated IP65, making it resistant to dust and low-pressure water jets—ideal for demanding industrial environments
- Uses a hermetically sealed reed switch, triggered by piston movement for reliable and accurate switching
- Designed for consistent operation with 5% repeatability, suitable for applications where precision is critical
- Operates in media up to 194°F (90°C), allowing use in high-temperature applications such as engine cooling or industrial heating systems
- Available in aluminum (725 PSI max) or stainless steel (1,450 PSI max) to suit different durability and environmental requirements
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