SMC AS Series Panel Mount Flow Controller, 90 L/min, 4 mm Pipe

Lock speed setting, with the touch of a button
It can be locked only by pushing the handle after adjustment.
Convenient opening indication scale
The opening indication scale for the needle valve is provided on the handle to facilitate speed adjustments.
Easy speed control at low flow volume ranges
Possible to control the mass velocity
Constant handle constructed of metal to withstand heavy usage
In addition to the standard handle made of resin, a heavy-duty metal handle is also available.
Retainer prevents an accidental loss of needle