FLOW SWITCHES
FLOW SWITCHES
I flow switches They are essential devices for controlling the flow of liquids and gases within systems. Their role is simple but crucial: to monitor the presence and continuity of flow, ensuring the safety and efficiency of systems in numerous application sectors—from water treatment to machinery cooling, from hydraulic circuits to chemical and food processes.
Comhas offers a complete range of flow switches selected among the best international producers, including Dwyeromega, and other manufacturers specializing in fluid measurement and control. Thanks to Comhas's extensive experience in process instrumentation, each product is supported by qualified technical consultancy and a customization service to adapt to the specific needs of the plant.
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I flow switches Available versions include paddle, piston, and thermal static valves, designed to control liquids and gases even under harsh operating conditions. Different technologies detect flow rate variations or lack of flow, triggering alarm signals or shutdown commands to protect pumps, exchangers, and critical circuits.
Thanks to robust bodies made of brass, stainless steel or corrosion-resistant plastic materials, the flow switches Comhas can be used in harsh industrial environments, subject to vibration, high temperatures, or aggressive atmospheres. Models with IP65, IP66 protection ratings, SIL2 – SIL3, or ATEX certification are available, also ideal for explosive atmospheres or offshore applications.
Advantages of Comhas Flow Switches
- Wide selection of models for liquids and gases
- Robust and reliable constructions for every operating condition
- Possibility of customized calibrations and dedicated technical consultancy
- International certifications for safety and industrial compliance SIL / Atex
I would choose flow switches Comhas means relying on reliable and proven tools, capable of protecting systems and ensuring process continuity in any production context.
• Target flow switch.
• Simple.
• Economic.
• Reliable.
• Robust.
• 3/8” to 2” inline.
• Over 2” insertion.
• Brass, stainless steel or PVC.
• Stainless steel pendulum.
• NO or NC contact.
• Supports suspended particles.
• In brass, ready for delivery.
- Flow switches for liquids and gases
- Suitable for applications SIL 2 e SIL 1
- Compact design
- Flow switch for gas or liquid
- Certifications: SIL2 and Atex
- Durable design, stainless steel material
- Gas flow switch
- Small and compact
- Relay output
Plastic flow switch for pipes from DN10 to DN 150 also available in mixed brass version.
• From 1” to 6”.
• Sealed body.
• Maximum pressure 10 Bar.
• Maximum temperature 100°C.
• From 1/2”- 2”.
• Explosion-proof, UL, CSA, ATEX certified.
• Maximum pressure 140 Bar.
• Maximum temperature 105°C.
• Brass or Stainless Steel.
• Low flow version.
• From 1-1/2” to 20”
• Sealed body
• Maximum pressure up to 345 Bar
• Maximum temperature up to 205°C
• ATEX versions
• Target flow switch.
• Adjustable alarm point.
• Robust.
• Reliable.
• 3/8” to 2” inline.
• Over 2” insertion.
• Brass or stainless steel.
• Stainless steel pendulum.
• SPDT contact.
• Supports suspended particles.
• Minimum flow rate 0,8 l/min.
• EExd versions.
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• Target flow switch with instantaneous flow indication.
• Adjustable alarm point.
• Local indication of instantaneous flow rate.
• Robust.
• Reliable.
• 3/8” to 2” inline.
• Over 2” insertion.
• Brass or Stainless Steel.
• Stainless steel pendulum.
• SPDT contact.
• Supports suspended particles.
• Minimum flow rate 0,8 l/min.
• EExd versions.
• Target flow switch now with local totalization.
• Accuracy ±1.5% fs
• Robust.
• Reliable.
• 3/8” to 2” inline.
• Over 2” insertion.
• Brass or stainless steel.
• Stainless steel pendulum.
• Not subject to wear.
• Low pressure drop.
• Supports suspended particles.
• Analog output 4-20 mA / 0-10 V (linear).
• Robust.
• Version with local indication and/or alarms.
• 4-20 mA output (optional).
• Various materials available.
• Suitable for oil.
• Particularly suitable for lubrication circuits and cooling controls.
• Piston flow switch.
• Simple.
• Economic.
• Reliable.
• Robust.
• Intervention point from 0.1 to 2.5 l/min (fixed).
• 8 mm hose connection or 1/4” threaded connection.
• Brass or stainless steel.
• POM piston.
• In brass, ready for delivery.
• Non-mechanical, low pressure drop, large pipe size
• Better reliability and life expectancy than mechanical flow switches
• Two LED status indicators provide visual indication of the flow switch
