VA22439 | Variable area glass flowmeter | glass float | max. flow rate 49.9 SCFH (23564 ml/min) air | 9.0 GPH (568 ml/min) water. | Dwyer
Variable area glass flowmeter, glass float, max. flow rate 49.9 SCFH (23564 ml/min) air, 9.0 GPH (568 ml/min) water.
Documents and manuals
Dwyer VA22439 Documents
Overview
Details for VA22439
Variable area glass flowmeter | glass float | max. flow rate 49.9 SCFH (23564 ml/min) air | 9.0 GPH (568 ml/min) water.
Series VA Variable Area Glass Flowmeters
The Series VA Variable Area Glass Flowmeters are designed with easy to read universal mm scale and supplied with correlation charts containing calibration data for air and water.
Glass flowmeters are suitable for metering carrier gases, liquid and gas measurement in pilot plants, laboratories, process flow and level indicating. Units are equipped with a standard 6-turn needle valve for flow rate control. High precision metering valves with non-rising stems (sold separately) are available for high sensitivity control and resolution - particularly suited for very low flow rates.
Flowmeters are shipped completely assembled and ready for panel mounting. Use an optional acrylic tripod base to convert to self-standing bench mounting.
Note: Calibration data is provided with each unit and is unique to each scale. If you require a calibration certificate for your flowmeter, please see the option under Accessories. (This excludes: VA1043, VA1243, VA1343, VA25425 and VA25025).
California Residents: Click Here for Proposition 65 WARNING.
Product Applications
- Gas or liquid metering
- Chemical processing
- Semiconductor systems
- Water and air pollution analysis systems
- Laboratory systems
- Permanently fused ceramic scale with vertical locator line reduces parallax and eyefatigue saving time
- Long operating life with thick polycarbonate front shield that protects tube frombreakage and serves as a magnifying lens to enhance reading resolution
- Standard 6-turn needle valve for flow rate control eliminating the need for a separatevalve reducing cost
- No additional installation required with optional acrylic tripod base which allows forself-standing bench mounting
- High precision metering valves with non-rising stems are available for high sensitivitycontrol and resolution for very low flow rate
Specifications
- Series
- VA Variable Area Glass Flowmeters
- Category/Type
- Flow
- Type
- Flowmeters
- Series
- VA Variable Area Glass Flowmeters
- Service
- Compatible gases or liquids.
- Wetted Materials
- Flowtube: Borosilicate glass; Floats: Glass or SS (sapphire; Carboloy and tantalum are optional); Float stops: PTFE; End fittings: Anodized aluminum; 316 SS; brass or PTFE; Packings: Fluoroelastomer; none on VAX5XX models; O-rings: Buna-N on aluminum models and brass models; fluoroelastomer on SS models; PTFE on VAX5XX models.
- Temperature Limits
- 250°F (121°C); VAX5XX: -15 to 150°F (-26 to 65°C).
- Pressure Limits
- 200 psig (13.8 bar); VAX5XX: 100 psig (6.7 bar).
- Accuracy
- ±2% FS @ 70°F (21.1°C) and 14.7 psia (1 atm absolute); VA1043; VA1243; VA1343; VA25425; VA25025: ±5% FS @ 70°F(21.1°C) and 14.7 psia (1 @ absolute).
- Repeatability
- ±0.25% FS.
- Leak Rate
- 1 x 10-7 sccs of helium.
- Scales
- Universal 65 mm or 150 mm with correlation charts.
- Turn-Down Ratio
- 10:1.
- Connections
- Two 1/8" female NPT.
- Mounting
- Vertical.
- Valve
- 6-turn needle (standard); optional 16-turn high precision valve.
- Valve Orifice
- Acetal on aluminum models and brass models; PCTFE on stainless steel models; PTFE on VAX5XX models.
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