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Series RSF Rotatable Scale Flowmeters

Series TVA All Fluoropolymer Flowmeters

Series VA Variable Area Glass Flowmeters

65 mm and 150 mm, ±2% FS Accuracy, Interchangeable Flowtubes, PTFE Options, Universal mm Scale

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).

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Product Applications

Gas or liquid metering
Chemical processing
Semiconductor systems
Water and air pollution analysis systems
Laboratory systems

Starting at $234.25

Ordering

Grouped product items
Model	Description	Availability*	Price
VA10412	Variable area glass flowmeter, SS float, max. flow rate 5.34 SCFH (2520 ml/min) air, 1.125 GPH (71 ml/min) water.	7-8 Weeks*	$234.25
VA10417	Variable area glass flowmeter, glass float, max. flow rate 13.4 SCFH (6318 ml/min) air, 2.33 GPH (147 ml/min) water.	1-3 days*	$238.55
VA10420	Variable area glass flowmeter, SS float, max. flow rate 52.3 SCFH (24680 ml/min) air, 11.81 GPH (745 ml/min) water.	1-3 days*	$238.55
VA10423	Variable area glass flowmeter, glass float, max. flow rate 2.29 SCFH (1081 ml/min) air, 0.329 GPH (20.8 ml/min) water.	1-3 days*	$234.25
VA10424	Variable area glass flowmeter, SS float, max. flow rate 4.51 SCFH (2129 ml/min) air, 0.930 GPH (58.7 ml/min) water.	1-3 days*	$238.55
VA1043	Variable area glass flowmeter, glass float, max. flow rate 0.104 SCFH (49 ml/min) air, 0.009 GPH (0.55 ml/min) water.	1-3 days*	$238.55
VA1046	Variable area glass flowmeter, SS float, max. flow rate 0.633 SCFH (299 ml/min) air, 0.122 GPH (7.7 ml/min) water.	1-3 days*	$238.55
VA12411	Variable area glass flowmeter, glass float, max. flow rate 2.65 SCFH (1249 ml/min) air, 0.428 GPH (27 ml/min) water.	1-3 days*	$510.85
VA12414	Variable area glass flowmeter, SS float, max. flow rate 8.45 SCFH (3990 ml/min) air, 1.71 GPH (108 ml/min) water.	1-3 days*	$510.85
VA12417	Variable area glass flowmeter, glass float, max. flow rate 13.4 SCFH (6318 ml/min) air, 2.33 GPH (147 ml/min) water.	1-3 days*	$510.85
VA12420	Variable area glass flowmeter, SS float, max. flow rate 52.3 SCFH (24680 ml/min) air, 11.81 GPH (745 ml/min) water.	1-3 days*	$510.85
VA12422	Variable area glass flowmeter, SS float, max. flow rate 89.2 SCFH (42094 ml/min) air, 19.97 GPH (1260 ml/min) water.	1-3 days*	$510.85
VA12424	Variable area glass flowmeter, SS float, max. flow rate 4.51 SCFH (2129 ml/min) air, 0.930 GPH (58.7 ml/min) water.	1-3 days*	$510.85
VA1245	Variable area glass flowmeter, glass float, max. flow rate 0.220 SCFH (104 ml/min) air, 0.028 GPH (1.8 ml/min) water.	3-4 Weeks*	$510.85
VA15413	Variable area glass flowmeter, glass float, flow rate 4.322 SCFH (2040 ml/min) air, 0.630 GPH (39.7 ml/min) water.	7-8 Weeks*	$631.60
VA20429	Variable area glass flowmeter, glass float, max. flow rate 0.792 SCFH (374 ml/min) air, 0.087 GPH (5.5 ml/min) water.	1-3 days*	$393.20
VA20436	Variable area glass flowmeter, SS float, max. flow rate 16.08 SCFH (7590 ml/min) air, 3.43 GPH (217 ml/min) water.	1-3 days*	$400.45
VA20437	Variable area glass flowmeter, glass float, max. flow rate 18.38 SCFH (8678 ml/min) air, 3.32 GPH (210 ml/min) water.	7-8 Weeks*	$400.45
VA20440	Variable area glass flowmeter, SS float, max. flow rate 93.9 SCFH (44336 ml/min) air, 21.7 GPH (1370 ml/min) water.	3-4 Weeks*	$404.55
VA22434	Variable area glass flowmeter, SS float, max. flow rate 9.67 SCFH (4562 ml/min) air, 2.067 GPH (130 ml/min) water.	1-3 days*	$649.10
VA22435	Variable area glass flowmeter, glass float, max. flow rate 8.07 SCFH (3807 ml/min) air, 1.336 GPH (84 ml/min) water.	3-4 Weeks*	$649.10
VA22438	Variable area glass flowmeter, SS float, max. flow rate 35.5 SCFH (16737 ml/min) air, 8.02 GPH (506 ml/min) water.	1-3 days*	$651.00
VA22440	Variable area glass flowmeter, SS float, max. flow rate 93.9 SCFH (44336 ml/min) air, 21.7 GPH (1370 ml/min) water.	1-3 days*	$646.05
VA23429	Variable area glass flowmeter, glass float, max. flow rate 0.792 SCFH (374 ml/min) air, 0.087 GPH (5.5 ml/min) water.	7-8 Weeks*	$392.25
VA23435	Variable area glass flowmeter, glass float, max. flow rate 8.07 SCFH (3807 ml/min) air, 1.336 GPH (84 ml/min) water.	7-8 Weeks*	$398.30
VA25435	Variable area glass flowmeter, glass float, flow rate 8.07 SCFH (3807 ml/min) air, 1.34 GPH (84.3 ml/min) water.	3-4 Weeks*	$799.80
VA25437	Variable area glass flowmeter, glass float, flow rate 18.39 SCFH (8678 ml/min) air, 3.32 GPH (209 ml/min) water.	3-4 Weeks*	$799.80

Specifications

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.

Features

Permanently fused ceramic scale with vertical locator line reduces parallax and eye fatigue saving time
Long operating life with thick polycarbonate front shield that protects tube from breakage and serves as a magnifying lens to enhance reading resolution
Standard 6-turn needle valve for flow rate control eliminating the need for a separate valve reducing cost
No additional installation required with optional acrylic tripod base which allows for self-standing bench mounting
High precision metering valves with non-rising stems are available for high sensitivity control and resolution for very low flow rate

Support Library

Product Literature

Manuals

Instruction Manual

Catalog Pages

Series VA Catalog Page

Drawings

FAQ

Questions

Question

We have several VA Flowmeters. We are flowing Helium through them and need to know what the flow rate is for the actual helium based on the conversion rates to Air. Do we multiply or divide by 2.69?

Answer

Yes, you will need to multiply your reading by 2.69.

Related

Series VA

Question

I am looking to use an "Air" flowmeter RMA-6-SSV to monitor CO2 flow. I am wondering if there are are any concerns or correction factors I need to apply.

Answer

A specific gravity correction factor will need to be considered when monitoring other gases with a meter calibrated for air. The correction factor equation is as follows: Q2=Q1 x sqrt (1/S.G.) Where: Q1= Observed Flowmeter reading Q2= Standard Flow Corrected for Specific Gravity 1= Specific Gravity of Air or Water S.G.= Specific Gravity of media being used in flowmeter originally calibrated for air or water.
This equation can be found in the beginning of the Flow section in the catalog. Alternatively, special ranges and scales can be provided; for specific information please contact our customer service department.
For further information, see our "Tech & Specs" Video Blog: Fix your Flow... Specific Gravity and Pressure Corrections for Variable Area Flowmeters (Episode 4), in Dwyer's Video Library.

Related

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Series VF

Series LFM

Series VFC/VFCII

Series VA

Question

We use 4 different VA flow controls, we have VA12418 (M) and VA12420 (H). We also have the same size but marked (L). What are the correct part numbers for the "L" and what does it mean?

Answer

The letters on the knobs of the VA Series tell us what type of valve is on the flow meter. There are many different types of valves and they are sized based on what the maximum flow rate would be (ex. Valve M has a different maximum flow than Valve H). It really doesn’t tell us anything about the part number of the flow meter. This part number should be on the meter itself or on the correlation data sheet that came with it.

Related

Series VA

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Accessories

Model	Description	Availability*	Price
NISTCAL-FL1	NIST traceable calibration certificate for variable area flowmeters (air). NOTE: EQUAL CERTS WILL BE CHARGED PER UNITS PURCHASED.	Less Than 1 Week*	$352.00
NISTCAL-FL2	NIST traceable calibration certificate for variable area flowmeters (water). NOTE: EQUAL CERTS WILL BE CHARGED PER UNITS PURCHASED.	Less Than 1 Week*	$292.00