The HT-30 Water Flow Switch Sensor is a high-quality flow detection and protection device designed to ensure safe operation of CO₂ laser engraving and cutting machines. It continuously monitors the water cooling system and automatically stops laser operation when water flow is insufficient or interrupted — preventing laser tube damage due to overheating.

Built with a durable red plastic housing and 20mm (3/4") threaded connectors, the HT-30 is easy to install and compatible with most industrial-grade water cooling systems. Its reliable switching mechanism and fast response make it an essential safety component for any water-cooled laser setup.

Key Features:

• Ensures continuous water flow for CO₂ laser cooling systems
• Automatic protection — disables laser if water flow stops
• Durable plastic body with corrosion-resistant design
• Large 20mm inlet/outlet ports for high flow capacity
• High sensitivity and stable performance
• Easy installation with standard pipe fittings
• Suitable for industrial laser cutters, engravers, and chillers

Technical Specifications:

• Model: HT-30
• Material: High-strength red plastic
• Connector Size: 20mm (3/4 inch) inlet and outlet
• Operating Voltage: DC 0–36V (signal output)
• Max Current: ≤0.5A
• Flow Rate Range: 1 – 30 L/min (typical)
• Switch Type: Normally Open (closes when flow is detected)
• Maximum Pressure: ≤1.75 MPa
• Operating Temperature: 0°C – 80°C
• Cable Length: ~30 cm
• Color: Red

Applications:

• CO₂ laser engraving and cutting machines
• Industrial water cooling systems
• Laser tube protection circuits
• CNC and chiller systems
• Any fluid monitoring or safety control system