VisiFloat® Flowmeters

Precision machined from solid acrylic
Used to indicate or manually control air or gas flow from .1 SCFH to 100 SCFM or water flow from .6 GPH to 20 GPM

Dwyer Visi-Float flowmeter bodies are cut and precision machined from solid, clear acrylic plastic blocks. This contruction not only produces a handsome finished product, but permits complete visual inspection. As a result, the Dwyer Visi-Float flowmeters are espcially popular for medical and laboratory equipment applications.

Scales are easy to read - The front scale location and white background provides excellent visibility. The direct reading scales are hot stamped into the plastic and will not wear off. Mid-range calibration is established with a master flowmeter. Accuracy is +/-5% of full scale for VFA models, +/-3% for VFB, and +/-2% for VFC. Scales average 2" long on the VFA models, 4" long on the VFB and 5" long on VFC.

Durable and attractive construction - The machined acrylic bodies of the Dwyer Visi-Float flowmeters are practically unbreakable. Fabrication is backed by over 60 years of experience in acrylic instrument machining. The tapered bore is precision machined to a smooth surface that provides perfect visibility of the indicating float. The VFA and VFB models are available with either brass or stainless steel inlet and outlet connections and are tapped for 1/8"NPT thread. VFB models 85 and 86 have either 1/4" back or 3/8" end connections. The VFC models have PVC 1" NPT female connections and VFCII units are equipped with acetal thermoplastic 1"NPT male fittings. VFCII fittings also include hex wrench flats to prevent stripped threads. Precision metering valves in brass or stainless steel are available for most VFA and VFB models. VFC models, intended for use with external metering valves, include a stainless steel guide rod and large diameter float for excellent stability and visibility at higher flow rates. Two options are offered for VFCII units, specifically designed for applications requiring FDA approved materials. Choose 316 stainless steel float and guide rod and Viton® "O" rings.

Easy installation - All Visi-Float flowmeters have metal mounting inserts on read for panel mounting. They can also be supported directly by system piping.

Viton® is a registered trademark of DuPont Dow Elastomers

Specifications

**General Specifications**
Meter Body	Acrylic plastic. Metering tube machined into body
Wetted Metal Parts	VFA & VFB: Brass Standard; Stainless Steel Optional VFC: Stainless Steel Standard
Floats	Stainless Steel Black Glass Aluminum K Monel (depends upon range)
Float Stops	Stainless Steel Springs
Pipe Connections	VFA: 1/8" FNPT VFB: 1/8" FNPT* *VFB 85 & 86: 1/4" Back or 3/8" End Connections VFC: 1" FNPT VFCII: 1" MNPT
"O" Rings	Buna-N
Mounting Inserts	10-32x1/4" deep
Scale	Hot Pressed into acrylic body
Knobs	ABS Plastic
Maximum Pressures and Temperatures	VFA & VFB without valve: 100 PSIG (690 kPa)@150°F (85°C) 150 PSIG (1000 kPa) @ 100°F (38°C) VFA & VFB with valve: 100 PSIG (690 kPa) @ 150°F (85°C) VFC: 100 PSIG (690 kPa) @ 120°F (48°C)
Accuracy	VFA: ±5% of full scale VFB: ±3% of full scale VFC: ±2% of full scale

VFA/VFB Dimensional Drawing
Click HERE for full size

VFC/VFCII Dimensional Drawing
Click HERE for full size

Ranges/Part Numbers

VFA Series
VFA-(range number)-(SS, BV, SSV, EC, EC-SS)-(PF, RKA)

Range SCFH Air	Range Number
.1-1	1
.2-2	2
.6-5	3
1-10	4
2-20	5
4-30	6
5-50	7
10-100	8
20-200	9

Range cc/min Water	Range Number
6-50	32
10-100	33
20-200	34

Range l/min Air	Range Number
.06-0.5	21
.15-1	22
6-5	23
1-10	24
3-25	25
6-50	26
10-100	27

Range US GPH Water	Range Number
.6-5	41
2-10	42
3-20	43
8-40	44

VFA Series Options

Order Suffix	Option
-BV	Brass Valve
-SSV	Stainless Steel Valve
-SS	Stainless Steel Connections
-EC	End Connections
-EC-SS	Stainless Steel End Connections
-PF	Pointer Flag
-RKA	Regulator Kit

VFB Series
VFB-(range number)-(SS, BV, SSV, EC, EC-SS)-(PF-RKVFB)

Range SCFH Air	Range Number
.3-3	50
1-10	91
2-20	51
4-40	52
10-100	53
15-150	54
20-200	55

Range SCFM Air	Range Number
.3-3	90

Range cc/min Air	Range Number
100-1000	60

Range l/min Air	Range Number
.2-4	65
1-10	66
1-20	67
3-30	68
4-40	69

Range cc/min Water	Range Number
2-30	82

Range US GPH Water	Range Number
.5-12	80
1-20	83
6-60	81

Range US GPM Water	Range Number
.2-2	85
.5-5	86

VFB Series Options

-SS	Stainless Steel Connections
-BV	Brass Valve (n/a on ranges 85 and 86)
-SSV	Stainless Steel Valve
-EC	End Connections
-EC-SS	Stainless Steel End Connections
-PF	Pointer Flag
-RKVFB	Regulator Kit

VFC/VFCII Series
VFC-(range number)-(EC)
VFCII-(range number)-(EC, FDA, VIT)

Range SCFM Air	Range Number
2.5-25	121
5-50	122
10-100	123

Range l/min Air	Range Number
60-700	131
200-1400	132
300-2800	133

Range US GPM Water	Range Number
.5-5	141
1-10	142
2-20	143

Range l/min Water	Range Number
2-20	151
4-40	152
10-75	153

VFC/VFCII Series Options

Order Suffix	Option
-EC	End Connections
-FDA* (VFCII only)	316 SS Float and Guide rod
-VIT* (VFCII only)	Viton® O Rings

*-FDA and -VIT options are both required to be FDA acceptable

Contact Us!

Sherman Instruments
John Sherman Agencies Limited
1641 Venables Street
Vancouver, British Columbia, Canada
V5L 2H1

Phone: 604-254-9622
Fax: 604-254-3123

e-mail: info@johnsherman.com