Flow Analysis
AVANTOR MASTERFLEX (VWR LLC) Masterflex Variable-Area Flowmeter with High-Res Valve, Correlated Reading, PTFE Housing and Fittings, 65-mm Scale; 2704 mL/min Air
The substitution of metal fittings with PTFE eliminates a potential contamination source for high-purity applications. The glass tube utilizes a fused ceramic scale for a precise, permanent measuring guide. In addition, a vertical-tangential locator line provides readings with hairline accuracy. Further improving readability is a front shield that magnifies the scale 16%. An anodized aluminum frame protects the heavy-walled glass flowtube; a white acrylic backplate protects and enhances viewing in the protective frame.
Select a flowmeter with a valve for flow rate control. The standard valve is suitable where high resolution metering is not essential. The high precision valve features a fine-adjust 16-turn "non-rising stem" to more accurately set your desired flow rate.
All flowmeters come with correlation data sheets for water and numerous gases (listed below) at standard temperature and pressure (STP).
AVANTOR MASTERFLEX (VWR LLC) Masterflex Variable-Area Flowmeter with High-Res Valve, Correlated Reading, Aluminum Housing and Fittings, 65-mm Scale, 6.318 LPM Air
Aluminum is economical and good for general use with noncorrosive gases and liquids. Brass is economical and good for use with water. Stainless steel withstands higher temperature and pressure and features excellent chemical compatibility. Valved meters have valves mounted at the bottom/inlet, typically used for positive pressure with liquids and gases. The valve can be reconfigured to mount at the top/outlet, often for vacuum applications. All correlated flowmeters come with data sheets for water and air at standard temperature and pressure (STP).