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SERIES VA

VARIABLE AREA GLASS FLOWMETERS

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

CALIBRATION SERVICES AVAILABLE

[31.75]

1/8 NPT

[31.75]

FLOW

1/8 NPT

150 mm

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.

BENEFITS/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ow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owrate

APPLICATIONS

• Gas or liquid metering

• Chemical processing

• Semiconductor systems

• Water and air pollution analysis systems

• Laboratory systems

65 mm

MODEL CHART - METAL 65 MM SCALE

Model Max. Flow Rate

Aluminum SS Brass Float

VA1043 VA1044 VA1045 VA1046 VA1047 VA1048 VA10423 VA10424 VA10411 VA10412 VA10413 VA10414 VA10417 VA10418 VA10419 VA10420 VA10421 VA10422

MODEL CHART - METAL 150 MM SCALE

Model Max. Flow Rate

Aluminum SS Brass Float

VA20429 VA20430 VA20433 VA20434 VA20435 VA20436 VA20437 VA20438 VA20439 VA20440

OPTIONS Use order code: Description

NISTCAL-FL1

NISTCAL-FL2

VA1243 VA1244 VA1245 VA1246 VA1247 VA1248 VA12423 VA12424 VA12411 VA12412 VA12413 VA12414 VA12417 VA12418 VA12419 VA12420 VA12421 VA12422

VA22429 VA22430 VA22433 VA22434 VA22435 VA22436 VA22437 VA22438 VA22439 VA22440

VA1343

VA1345

VA1347

VA1349

VA13411

VA13413

VA13417

VA13419

VA13421

VA23429

VA23433

VA23435

VA23437

VA23439

NISTtraceablecalibrationcerticateforvariableairowmeters NISTtraceablecalibrationcerticateforvariablewaterowmeters

Glass SS Glass SS Glass SS Glass SS Glass SS Glass SS Glass SS Glass SS Glass SS

Glass SS Glass SS Glass SS Glass SS Glass SS

Air SCFH

(ml/min)

0.104 (49)

0.307 (145)

0.220 (104)

0.633 (299)

0.43 (202)

1.1 (522)

2.29 (1081)

4.51 (2129)

2.65 (1249)

5.34 (2520)

4.32 (2040)

8.45 (3990)

13.4 (6318)

25.5 (12058)

27.9 (13153)

52.3 (24680)

49.1 (23169)

89.2 (42094)

Air SCFH

(ml/min)

0.792 (374)

1.725 (814)

4.9 (2313)

9.67 (4562)

8.07 (3807)

16.08 (7590)

18.38 (8678)

35.5 (16737)

49.9 (23564)

93.9 (44336)

Water GPH

(ml/min)

0.009 (0.55)

0.038 (2.38)

0.028 (1.8)

0.122 (7.7)

0.041 (2.6)

0.19 (12.0)

0.329 (20.8)

0.930 (58.7)

0.428 (27)

1.125 (71)

0.63 (40)

1.71 (108)

2.33 (147)

5.77 (364)

4.9 (309)

11.81 (745)

8.27 (522)

19.97 (1260)

Water GPH

(ml/min)

0.087 (5.5)

0.323 (20.4)

0.848 (54)

2.067 (130)

1.336 (84)

3.34 (217)

3.32 (210)

8.02 (506)

9.0 (568)

21.7 (1370)

9-13/16 [249.24]

8-13/16 [223.84]

5-1/2

[139.7]

1/8 NPT

150 mm

Panel mounting: Drill two 5/8˝ dia. holes at 4.5˝ apart for 65 mm models

and 8.812˝ apart for 150 mm models (center-to center).

65 mm

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ttings:Anodized

aluminum, 316 SS, brass or PTFE; Packings: Fluoroelastomer, none on VAX5XX

models;O-rings:Buna-Nonaluminummodelsandbrassmodels,uoroelastomer

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 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 Orice: Acetal on aluminum models and brass models, PCTFE on SS models, PTFE on VAX5XX models.

MODEL CHART - PTFE 65 MM SCALE Model Max. Flow Rate

With Valve Without Valve Float VA1545 VA1547 VA15411 VA15413 VA15417 VA15419 VA15421

Note: VAX5XX models indicate PTFE units.

MODEL CHART - PTFE 150 MM SCALE Model Max. Flow Rate

With Valve Without Valve Float VA25425 VA25429 VA25431 VA25435 VA25437

Note: VAX5XX models indicate PTFE units.

ACCESSORIES Model Description VA7

VA81

VA82 VA83

VA84

VA85

VA86

USA: California Proposition 65 WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

-7

sccs of helium.

Air SCFH

VA1505 VA1507 VA15011 VA15013 VA15017 VA15019 VA15021

VA25025 VA25029 VA25031 VA25035 VA25037

Acrylic tripod for single meter High precision valve, 316 SS, 0.42 SCFH capacity High precision valve, 316 SS, 0.85 SCFH capacity High precision valve, 316 SS, 2.12 SCFH capacity High precision valve, 316 SS, 4.87 SCFH capacity High precision valve, 316 SS, 13.14 SCFH capacity High precision valve, 316 SS, 45.55 SCFH capacity

Glass Glass Glass Glass Glass Glass Glass

Glass Glass Glass Glass Glass

(ml/min)

0.220 (104)

0.428 (202)

2.646 (1249)

4.322 (2040)

13.39 (6318)

27.9 (13153) 49 (23169)

Air SCFH

(ml/min)

0.104 (49)

0.792 (374)

1.75 (825)

8.07 (3807)

18.39 (8678)

Water GPH

(ml/min)

0.028 (1.8)

0.047 (2.95)

0.428 (27)

0.630 (39.7)

2.33 (147)

4.9 (309)

8.27 (522)

Water GPH

(ml/min)

0.01 (0.61)

0.087 (5.5)

0.262 (16.5)

1.34 (84.3)

3.32 (209)

DWYER INSTRUMENTS, LLC | dwyer-inst.com

4-1/2

[114.3]

1/8 NPT

Variable Area & In-Line

Flowmeters,

255