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7450 Series - Glass Tube Flowmeter
Side plate style meters with 75 mm or 150 mm borosilicate glass tube and 316L stainless steel or brass connections. Valves optional. Available with Hastelloy® C-276 construction for greater chemical resistance.
DESCRIPTION
Metering Tube | Borosilicate Kinglass | |
Internal Components | 316L SS | |
Fitting Material | Brass or 316L SS | |
Inlet/Outlet Fittings | FNPT, horizontal | |
Control valve optional | ||
O-Ring | Standard: | Viton |
Optional: | Buna N, EPR, and Kalrez® | |
PERFORMANCE
Capacities | Water | 0.48 to 7.4 GPM |
Air | 2 to 20 SCFM | |
Scale | 75 mm (3”), 150 mm (6”) direct reading, detachable | |
Accuracy | ± 5% of full scale flow, 75 mm | |
± 3% of full scale flow, 150 mm | ||
Turndown | 10:1 | |
Repeatability | 1% | |
Maximum Temperature | Liquid 200° F (93° C) | |
Gases 250° F (121° C) | ||
Maximum Pressure | 200 psig | |
Ambient Temperature | 33° F to 125° F (1° C to 52° C) | |
OPTIONS
Certified Calibrations | Conform to ISA RP 16.6 |
Scales | Any volumetric unit |
FLOATS
Options for rotameter float materials and designs extend flow ranges for different fluids within a given rotameter tube design.
SPECIFICATIONS
75mm (3”) Scale Models | |||||||||||||
Full Scale Flow | Dimensions (Inches) | ||||||||||||
Order Number |
Water | Air | Float Number |
Float Type |
Tube Size |
Tube Number |
A | B | C | D | E | ||
GPM | LPM | SCFM | SLPM | ||||||||||
3G1 | .48 | 1.8 | 2.0 | 56 | 1/2-LPG-04 | LP | .50” | 1/2-24-G-3 | 1.75 | 1.50 | 8.00 | 7.00 | 2.25 |
3G2 | 1.0 | 3.8 | 4.0 | 112 | 1/2-LPG-05 | LP | .50” | 1/2-24-G-3 | 1.75 | 1.50 | 8.00 | 7.00 | 2.25 |
3G3 | 2.0 | 7.6 | 8.2 | 230 | 1/2-SLG-01 | SL | .50” | 1/2-24-G-3 | 1.75 | 1.50 | 8.00 | 7.00 | 2.25 |
3P1 | 2.5 | 9.4 | 10.0 | 280 | 5/8-GVP-01 | GV | .625” | 5/8-29-P-3 | 1.75 | 1.50 | 8.00 | 7.00 | 2.25 |
3P2 | 4.0 | 15.0 | 20.0 | 560 | 5/8-SLP-01 | SL | .625” | 5/8-29-P-3 | 1.75 | 1.50 | 8.00 | 7.00 | 2.25 |
3P3 | 5.6 | 21.0 | — | — | 5/8-SLP-02 | SL | .625” | 5/8-29-P-3 | 1.75 | 1.50 | 8.00 | 7.00 | 2.25 |
3P4 | 7.4 | 28.0 | — | — | 5/8-SLP-03 | SL | .625” | 5/8-29-P-3 | 1.75 | 1.50 | 8.00 | 7.00 | 2.25 |
150mm (6”) Scale Models | |||||||||||||
Full Scale Flow | Dimensions (Inches) | ||||||||||||
Order Number |
Water | Air | Float Number |
Float Type |
Tube Size |
Tube Number* |
A | B | C | D | E | ||
GPM | LPM | SCFM | SLPM | ||||||||||
6G1 | 0.5 | 1.9 | 2.0 | 57 | 1/2-LPG-04 | LP | .50” | 1/2-24-G-6 | 1.75 | 1.50 | 11.57 | 10.57 | 2.25 |
6G2 | 1.0 | 3.8 | 4.2 | 118 | 1/2-LPG-05 | LP | .50” | 1/2-24-G-6 | 1.75 | 1.50 | 11.57 | 10.57 | 2.25 |
6G3 | 2.0 | 7.6 | 8.2 | 230 | 1/2-SLG-01 | SL | .50” | 1/2-24-G-6 | 1.75 | 1.50 | 11.57 | 10.57 | 2.25 |
6P1 | 2.5 | 9.4 | 10.0 | 280 | 5/8-GVP-02 | GV | .625” | 5/8-32-P-6 | 1.75 | 1.50 | 11.57 | 10.57 | 2.25 |
6P2 | 4.0 | 15.0 | 20.0 | 560 | 5/8-SLP-04 | SL | .625” | 5/8-32-P-6 | 1.75 | 1.50 | 11.57 | 10.57 | 2.25 |
6P3 | 5.6 | 21.0 | — | — | 5/8-SLP-05 | SL | .625” | 5/8-32-P-6 | 1.75 | 1.50 | 11.57 | 10.57 | 2.25 |
6P4 | 7.4 | 28.0 | — | — | 5/8-SLP-06 | SL | .625” | 5/8-32-P-6 | 1.75 | 1.50 | 11.57 | 10.57 | 2.25 |
* Tubes designated “G” have rib-guided floats.
Tubes designated “P” have pole-guided floats.

ORDERING:
Use the following guide to determine the specific product number you require.Example: 745 - 6P4 - 2 - 3 - 2 - 1
745 | ||||||
Meter Series | Order Number | Fitting Material | O-Ring Material | ScaleType | Valve Option | |
see Specifications table |
Brass - 3/8" FNPT - 1 316L SS - 3/8" FNPT - 2 |
EPR - 1 Buna-N - 2 Viton® - 3 Kalrez® No Valve - 4 Kalrez® Valve - 5 |
Millimeter - 1 GPM Water@70°F - 2 LPM Water@70°F - 3 SCFM Air@STP - 4 SLPM Air@STP - 5 Non standard - 6 |
Brass - Inlet - 1 Brass - Outlet - 2 No Valve - 3 316L SS - Inlet - 4 316L SS - Outlet - 5 |
NEED HELP?
Contact us for help selecting the correct product for your application.
(714) 891-0008 X108