Volumetric flow regulator HLF-2 series

for gascompactmanual

Product overview
Mounted directly to gas cylinders, the HLF-2 series provides a constant flow output via a manual handle, enabling connection to alarms and downstream devices.

1. Product features

• Compact size and low weight for portability
• Constant-flow output (HLF-2 series)
• Manual handle for simple flow adjustment

2. Usage / Operation

• The HLF-2 series delivers a fixed/constant flow.
• Handle operation: clockwise = close; counterclockwise = open.
• Set handle to closed position before connecting and secure the valve to the gas cylinder to prevent leaks at connections.
• After safe connection, open the handle to start flow and use the device.

3. Appearance / Variants

• HLF-2
• HLF-2E
• HLF-2C
• HLF-2B (variants such as HLF-2B-2)

4. Model selection / Notes
Model selection and variant overview are presented as graphical selection guides on the product page.

Technical characteristics / Specifications

• Series / Model: HLF-2 series
• Function: Constant-flow regulator valve for gas cylinder mounting
• Mounting: Directly mountable on gas cylinders
• Operation principle: Handle operation (clockwise close, counterclockwise open)
• Attributes: Compact design, low weight, portable
• Available variants: HLF-2, HLF-2E, HLF-2C, HLF-2B / HLF-2B-2
• Manufacturer: Xuzhou Hongyeo Instrument Co., Ltd.