Hot-Stamped Scales, Multi-Angle Views of Flow
The Series VF Visi-Float® Flowmeters are a line of direct reading, precision machined, clear acrylic body flowmeters suitable for both gas and liquid applications. The fabrication of the Visi-Float® flowmeters is backed by over 60 years of experience in acrylic instrument machining. This Series consists of 2' (51 mm) and 4' (102 mm) scales with optional precision metering valves.
The volume flow through the aperture can be calculated as. V = 0.6 (0.008 m 2) (2 (9.81 m/s 2) (3 m)) 1/2 = 0.037 m 3 /s. For height 1.5 m the volume flow is 0.1 m 3 /s. For height 0.5 m the volume flow is 0.06 m 3 /s. Draining Tank Calculator. This calculator is based on eq. (1b) and can be used to estimate the volume flow and time used to. DIGITEN LCD Display Water Flow Control Meter Liquid Quantitative Controller + G1' Water Flow Hall Effect Sensor Flow Meter Flowmeter Counter 1-60L/min + DC 12V Power Adapter 4.0 out of 5 stars 1 Misc.
Water Pipe Flow Rate Table For Pipes Up To 2 Inches In Diameter - This water flow rate table shows water flow through pipes and copper tubing. Volume of flow is at one foot per minute velocity in Pipe or Tube. Schedule 40 pipe Dia. Inches Cubic ft/min Gallons/minute 1/8. Liquid Flow Mfg. Has a thirty year background in all areas of pipe fabrication. With this number of years in the industry it is no surprise that we have worked with a wide range of materials. We offer quick turnaround on your piping project, and you can count on us for speedy, fully tested products built to your specifications.
For Fast and Accurate Calibration Services, Click HERE!
California Residents: Click Here for Proposition 65 WARNING.
Product Applications
- Medical equipment
- Laboratory equipment
- Air samplers
- Gas analyzers
- Pollution monitors
- Chemical injectors
- Cabinet purging
- Service:
- Compatible gases and liquids.
- Wetted Materials:
- Body: Acrylic plastic; O-ring: Buna-N (fluoroelastomer available); Metal parts: Nickel plated brass standard, SS optional; Float: SS, black glass,aluminum, K monel depending on range.
- Temperature & Pressure Limits:
- Without Valve: 100 psig (6.9 bar) @ 150°F (65°C); 150 psig (10 bar) @ 100°F (38°C); With Valve: 100 psig (6.9 bar) @ 120°F (48°C).
- Accuracy:
- VFA = 5% of FS; VFB = 3% of FS.
- Process Connection:
- 1/8' female NPT. VFB ranges 85 and 86 have 1/4' NPT back connections or 3/8' NPT end connections. These ranges not available with brass valves.
- Scale Length:
- VFA 2' typical length; VFB 4' typical length.
- Mounting Orientation:
- Mount in vertical position.
- Weight:
- VFA: 4.0 to 4.8 oz (.11 to .14 kg); VFB: 7.2 to 8.8 oz (.20 to .25 kg).
- Agency Approvals:
- Meets the technical requirements of EU Directive 2011/65/EU(RoHS II).
Liquid Flow 9 32
- Bodies are cut and precision machined from solid, clear acrylic blocks allowing for complete visual inspection
- White background allows for better visibility of the float increasing reading accuracy
- Direct reading scales are hot stamped into the plastic eliminating the need for troublesome conversions and increasing product operating life
- Precision machined tapered bore enables high repeatability
- Low installation costs with back or end connection options with metal mounting inserts that can be supported directly by system piping
- Special Multi-Column Visi-Float Flowmeters - Perfect for OEM applications, Visi-Float® flowmeters can be custom made with upto 10 columns in a single block of acrylic plastic. Available with or withoutvalves. Consult factory for more information.
- OEM Specials - Special flowmeter designs can be supplied to meet a wide range of requirementsand specific applications. These include: on-off plunger and push-to-test valves,special gas or fluid calibration, special ranges,scales, name brand or other identification. Pointer flags can be furnished forinstant visual reference. For specific information, please supply an outlineof your requirements.
- -PF Red ABS Plastic Pointer Flag.
- -VIT Fluoroelastomer O-rings.
- -RKA/RK-VFB Pressure Regulator.
Model Number | Description |
---|---|
RKA | Regulator kit for RMA or VFA. |
RK-VFB | Regulator kit for VFB. |
Series VFA - 2' Scale
EXAMPLE | VFA | 1 | AT | Series VFA-1-AT Visi-Float® Flowmeter, 2' scale, range .1-1 SCFH air, with aluminum tag. |
SERIES | VFA | Visi-Float® Flowmeter, 2' Scale | ||
RANGE | 1 2 3 4 5 6 7 8 9 21 22 23 24 25 26 27 32 33 34 41 42 43 44 | .1-1 SCFH Air .2-2 SCFH Air .6-5 SCFH Air 1-10 SCFH Air 2-20 SCFH Air 4-30 SCFH Air 5-50 SCFH Air 10-100 SCFH Air 20-200 SCFH Air .06-0.5 LPM Air .15-1 LPM Air .6-5 LPM Air 1-10 LPM Air 3-25 LPM Air 6-50 LPM Air 10-100 LPM Air 6-50 cc/min Water 10-100 cc/min Water 20-200 cc/min Water .6-5 GPH Water 2-10 GPH Water 3-20 GPH Water 8-40 GPH Water | ||
OPTIONS | ARB AT BV EC NIST PF SPCL SS SSV VIT WL | Arbitrary Scale Aluminum Tag Brass Valve* End Connections NIST Traceable Calibration Certificate Pointer Flag Special Cleaning Stainless Steel Wetted parts Stainless Steel Valve* Fluoroelastomer O-rings Without Logo |
Series VFB - 4' Scale
EXAMPLE | VFB | 50 | AT | Series VFB-50-AT Visi-Float® Flowmeter, 4' scale, range .3-3 SCFH air, with aluminum tag. |
SERIES | VFB | Visi-Float® Flowmeter, 4' Scale | ||
RANGE | 50 51 52 53 54 55 60 65 66 67 68 69 80 81 82 83 84 85 86 90 91 51D 53D 54D 55D 80D 83D 91D 92D 93D 94D | .3-3 SCFH Air 2-20 SCFH Air 4-40 SCFH Air 10-100 SCFH Air 15-150 SCFH Air 20-200 SCFH Air 100-1000 cc/min Air .2-4 LPM Air 1-10 LPM Air 1-20 LPM Air 3-30 LPM Air 4-40 LPM Air .5-12 GPH Water 6-60 GPH Water 2-30 cc/min Water 1-20 GPH Water 6-40 GPH Water .2-2 GPM Water .6-5 GPM Water .3-3 SCFM Air 1-10 SCFH Air 2-20 SCFH & 0.5-9.5 LPM Air 10-100 SCFH & 6-48 LPM Air 15-150 SCFH & 5-70 LPM Air 40-200 SCFH & 20-95 LPM Air 0.5-12 GPH & 0.04-0.74 LPM Water 1-20 GPH & 0.1-1.3 LPM Water 1-10 SCFH & 0.6-4.8 LPM Air 0.6-5 SCFH & 0.3-2.5 LPM Air 6-50 SCFH & 3-23 LPM Air 10-100 GPH & 0.5-6.5 LPM Water | ||
OPTIONS | ARB AT BV EC NIST PF SPCL SS SSV VIT WL | Arbitrary Scale |
*Valve is designed for flow adjustment only, not intended to be used as an open/shut-off valve.
Manuals
Catalog Pages
Product Data Sheet
- Series VF
- Series RM
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.
- Series RM
- Series LFM
- Series VA
- Series RM
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.
- Series RM
- Series LFM
- Series VA
- Series RM
- Series MM
- Series RM
- Series RM
- Series RM
Pressure: Q2 = Q1 x √((P1 x T2)/(P2 x T1))
Where:
Q1 = Observed Flowmeter Reading
Q2 = Standard Flow Corrected for Specific Gravity
P1 = Actual Pressure (14.7 psia + Gage Pressure)
P2 = Standard Pressure (14.7 psia, which is 0 psig)
T1 = Actual Temperature (460 R + Temp °F)
T2 = Standard Temperature (530 R, which is 70°F)
- Series VFC/VFCII
Liquid Flow 9 3/4
- Series VF
Liquid Flow 9 3/8
- Series MM
- Series RM
- Series DR4 High Flow Glass Flowmeter
- Series DR Direct Reading Glass Flowmeters
- RKA Regulator Kits
Liquid Flow 9 30
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