Series VFLO Venturi Flowmeter with Magnehelic® Gage

±2.5% Accuracy, Dual Scale in SCFM & in w.c.

The VENTURI FLOWMETER WITH MAGNEHELIC® GAGE is fabricated from aluminum and has a gradual Venturi profile to reduce pressure losses through the meter. Flexible connections enable the meter to be used in vertical or horizontal applications. The Magnehelic® gage provides a large, clear and accurate display of your differential pressure reading. Each meter is calibrated at standard atmospheric conditions. The dual scale reads in SCFM and in w.c. The meter is supplied with easy to read reference charts for various flow conditions. It is available in line sizes from 1" to 4" and can handle vacuum and pressure applications.

To place an order for the Venturi Flowmeter with Magnehelic® Gage, see the Magnehelic® Configurator.

California Residents:  Click Here for Proposition 65 WARNING.

Product Applications

  • Filter monitoring
  • Air velocity with Dwyer pitot tube
  • Blower vacuum monitoring
  • Fan pressure indication
  • Duct, room or building pressures
  • Clean room positive pressure indication

Models & Ordering

Model Description Usually Ships Price Order
Series VFLO
Ships:
To place an order for the Venturi Flowmeter with Magnehelic® Gage, see the Magnehelic® Configurator. Order

Specifications

Service:
Air and non-combustible, compatible gases. (Natural Gas option available).
Wetted Materials:
Aluminum, silicone, acrylic, polycarbonate, high carbon steel, low carbon steel, brass, paper, acrylic paint, enamel paint, alkyd coating, nickel plate, zinc plate, helsel FC, 300 series stainless steel, PTFE, Loctite® AV sealant, commercial black rubber, neoprene, samarium cobalt, nickel alloy steel cover, beryllium copper.
Housing:
Die cast aluminum case and bezel, with acrylic cover. Exterior finish is coated gray to withstand 168 hour salt spray corrosion test.
Accuracy:
±2.5% FS.
Pressure Limits:
-20" Hg to 15 psig (-0.677 bar to 1.034 bar); MP option: 35 psig (2.41 bar). For applications with high cycle rate within gage total pressure rating, next higher rating is recommended.
Overpressure:
Relief plug opens at approximately 25 psig (1.72 kPa).
Temperature Limits:
20 to 140°F (-6.67 to 60°C).
Size:
4" (101.6 mm) diameter dial face.
Mounting Orientation:
Diaphragm in vertical position. Consult factory for other position orientations.
Process Connection:
Female NPT of nominal line size. See Model Chart page.
Weight:
Gage only: 1 lb 2 oz (510 g), MP & HP 2 lb 2 oz (963 g); Venturi: see Model Chart page.

Features

  • Gradual Venturi profile reduces pressure losses through meter helping to insure a more accurate measurement to meet measurement specifications
  • Easy to read gage through undistorted plastic face permits viewing from far away
  • Patented design provides quick response to pressure changes means no delay in assessing critical situations
  • Durable and rugged housing and high-quality components combined provides longservice life and minimized down-time

Accessories

Model Number Description Usually Ships Price Order
Mini Brass Ball Valve, lever handle, 450 psi, 1/8 MVB-LM1 Mini Brass Ball Valve, lever handle, 450 psi, 1/8" Same Day $5.00 Order
Mini Brass Ball Valve, wedge handle, 450 psi, 1/8 MVB-WM1 Mini Brass Ball Valve, wedge handle, 450 psi, 1/8" Same Day $5.00 Order
Mini Brass Ball Valve, tee handle, 450 psi, 1/8 MVB-TM1 Mini Brass Ball Valve, tee handle, 450 psi, 1/8" Same Day $5.00 Order

Model Chart

Model Range Line Size

Weight
(not including gage)
lbs (kg)

2000-10VF1
2000-20VF1
2000-40VF1
0-10" w..c & 0-20 SCFM air
0-20" w.c. & 0-30 SCFM air
0-40" w.c. & 0-40 SCFM air
1"
1"
1"
3 (1.36)
3 (1.36)
3 (1.36)
2000-10VF2
2000-20VF2
2000-40VF2
0-10" w.c. & 0-50 SCFM air
0-20" w.c. & 0-70 SCFM air
0-40" w.c. & 0-100 SCFM air
1-1/2"
1-1/2"
1-1/2"
4.5 (2.04)
4.5 (2.04)
4.5 (2.04)
2000-10VF3
2000-20VF3
2000-40VF3
0-10" w.c. & 0-85 SCFM air
0-20" w.c. & 0-120 SCFM air
0-40" w.c. & 0-160 SCFM air
2"
2"
2"
6 (2.72)
6 (2.72)
6 (2.72)
2000-10VF4
2000-20VF4
2000-40VF4
0-10" w.c. & 0-200 SCFM air
0-20" w.c. & 0-290 SCFM air
0-40" w.c. & 0-395 SCFM air
3"
3"
3"
11 (4.99)
11 (4.99)
11 (4.99)
2000-10VF5
2000-20VF5
2000-40VF5
 0-10" w.c. & 0-350 SCFM air
0-20" w.c. & 0-500 SCFM air
0-40" w.c. & 0-675 SCFM air
4"
4"
4"
18 (8.16)
18 (8.16)
18 (8.16)

Product Literature

Manuals

Catalog Pages

Drawings

Photo Downloads

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