|
|
| "
DWYER" Series
VF Visi-Float Flowmeters |
|
| ■ 제조국
/ 제조사 |
■
Korea
/ 대한과학 |
| ■상품명 |
■
Series VF Visi-Float Flowmeters |
| ■ 짧은
소개 |
Dwyer
Visi-Float flowmeter bodies are cut and precision machined
from solid, clear acrylic plastic blocks. This
construction not only produces a handsome finished
product, but permits complete visual inspection. As a
result, the Dwyer Visi-Float flowmeters are especially
popular for medical and laboratory equipment applications. |
■
Features
| 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 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 l/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.
All standard models employ Buna-N
"O" rings for leak proof
operation and are available with either
back or end connections for horizontal or
vertical piping. 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?/sup>
"O" rings. See OPTIONS for
ordering codes.
Easy
installation - All Visi-Float
flowmeters have metal mounting inserts on
rear for panel mounting. They can also be
supported directly by system piping.
|
■ 제
품 특 징
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For
the OEM product designer, multi-column
flow meters can be custom made in an
almost infinite variety of combinations.
Up to 10 columns can be machined from a
single block of acrylic with scale lengths
up to 4" long and accuracies to ±3%
of full scale. Brass or stainless steel
fittings are available. Flow rates can be
controlled with metering or on-off valves.
Customer logos can be hot stamped on the
face of these units in any color. Consult
the factory regarding your special
requirements. |
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■
규격
(Specifications)
| Dimensions
- in Inches |
| |
Model
VFA |
Model
VFB |
| A |
4 |
6
1/2 |
| B |
3
(1/8 NPT female) |
5
1/2 (1/8 NPT female)* |
| C |
1
5/8 (10-32 thread) |
3
1/2 (10-32 thread) |
| D |
1/2 |
1/2 |
| E |
1
3/16 |
1
1/2 |
| F |
1
1/4 |
1
1/4 |
| I |
2
1/16 (BV or SSV) |
2
1/16 (BV or SSV) |
| K |
4
3/32 |
6
19/32 |
| L |
1 |
1
3/8 |
| M |
3/4
(EC) |
3/4
(EC) |
| N |
3/32(EC) |
3/32(EC) |
| *VFB
ordering numbers 85 and 86 have 1/4" NPT back
connections or 3/8" NPT end connections.
These ranges not available with brass valves |
|
|
SPECIFICATIONS
|
|
Meter
Body
|
Acrylic
plastic. Metering tube machined into body
|
|
Wetted
Metal Parts
|
VFA
& VFB-Brass std., SS opt
VFC-SS std.
|
|
Floats
|
ST.
Steel, Blk, Class, Alum., K Monel
|
|
Float
Stops
|
Stainless
Steel Springs
|
|
Pipe
Connections
|
VFA
& VFB-⅛"NPT VFC-11" NPT
(See
note at right under dimensions)
|
|
"O"Rings
|
Buna-N
|
|
Mounting
Inserts
|
10-32
X ¼" 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℃)
150 PSIG(1034 kPa) @100。 F(38℃)
VFA & VFB with valve:
100 PSIG(690 kPa) @150。 F(85℃)
VFC:100 PSIG(690 kPa) @120。 F(48℃)
|
|
Accuracy
|
Model
VFA, 5%; Model VFB, 3%
Model VFC, 2% of full scale
|
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|
OPTION
|
CODE
|
|
Metering
Valve
& Connection
|
Brass
(VFA, VFB)
Stainless Steel (VFA, VFB)
|
BV
SSV
|
|
Connections
only
|
Stainless
Steel (VFA, VFB)
|
SS
|
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End
Connections
|
Fittings
on bottom and top(All models)
|
EC
|
|
Pointer
Flag
|
Red
ABS Plastic (VFA, VFB)
|
PF
|
|
FDA
Acceptable
|
316
SS float and guide rod(required,VFCII)
|
FDA
|
|
FDA
Acceptable
|
Viton
O-ring (required,VFCII)
|
VIT
|
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Series
VF VISI-FLOAT Models and Ranges
|
|
Model
VFA -2" Scale
|
Model
VFB - 4"Scale
|
|
Range
SCFH Air
|
Ordering
No.
|
Range
LPM Air
|
Ordering
No.
|
Range
Ordering
SCFH Air
No.
|
|
.1-1
|
1
|
.06-0.5
|
21
|
.3-3
50
|
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.2-2
|
2
|
.15-1
|
22
|
1-10 91
|
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.6-5
|
3
|
.6-5
|
23
|
2-20 51
|
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1-10
|
4
|
1-10
|
24
|
4-40 52
|
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2-20
|
5
|
3-25
|
25
|
10-100 53
|
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4-30
|
6
|
6-50
|
26
|
15-150 54
|
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5-50
|
7
|
10-100
|
27
|
20-200 55
|
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10-100
|
8
|
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SCFM
Air
|
|
20-200
|
9
|
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|
.3-3 90
|
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CC
Water
per min.
|
Ordering
No.
|
Gal.
Water
per hour
|
Ordering
No.
|
CC/Min.
Air
|
|
100-1000 60
|
|
6-50
|
32
|
.6-5
|
41
|
LPM
Air
|
|
10-100
|
33
|
2-10
|
42
|
.2-4 65
|
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20-200
|
34
|
3-20
|
43
|
1-10 66
|
|
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8-40
|
44
|
1-20 67
|
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|
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3-30 68
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Model
VFC -5" Scale
|
4-40 69
|
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Rang
SCFM Air
|
Ordering
No.
|
Range
GPM Water
|
Ordering
No.
|
CC/Min.
Water
|
|
2-30 82
|
|
2.5-25
|
121
|
.5-5
|
141
|
GPHWater
|
|
5-50
|
122
|
1-10
|
142
|
.5-12 80
|
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10-100
|
123
|
2-20
|
143
|
1-20 83
|
|
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6-60 81
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LPM
Air
|
|
LPM
Water
|
|
GPM
Water
|
|
60-700
|
131
|
2-20
|
151
|
.2-2 85
|
|
200-1400
|
132
|
4-40
|
152
|
05-5 86
|
|
300-2800
|
133
|
10-75
|
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| CAT
No. |
Description |
단위/갯수 |
Price[VAT포함] |
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가격문의 |
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