
B
A
12 
11 
10
9 
8 
7 
6 
5 
4 
3 
2 
1
C
D
12 
11 
10
9 
8 
7 
6 
5 
4 
3 
2 
1
HEAVY-DUTY FLOWMETERS WITH 
STAINLESS STEEL ENCLOSURES
Vertical or Horizontal
FL901G Series
Starts at
$
1020
†
Optional
⻬ Heavy-Duty 304 SS Case
and Covers
⻬ 316L SS Rotatable
Fittings Feature Dual 
Ports for Vertical or 
Horizontal Mounting
⻬ Unique Float Stop Design
Allows Internals to be 
Removed and Replaced 
Without Disturbing Tube 
or Shield
⻬ NIST Calibration
Available
⻬ Direct-Reading Scales
(GPM Water or SCFM Air)
3
⻬ Full 4.76 mm (
Polycarbonate 
Safety Shields
⻬ Detachable, Clear
Polycarbonate 
Scale Plate 
⁄16") Thick
SPECIFICATIONS
Accuracy:
±2% FS
Repeatability: ±0.5% 
Scale: 250 mm (10") 
Scale Plate and Shield:
Polycarbonate
Wetted Parts: 
316L SS, EPR O-rings, 
borosilicate glass
Max Temp: 93°C (200°F) 
Turndown: 10:1
316 SS Rotatable Fittings
Vertical or 
Horizontal Mounting
Dimensions: mm (in)
A  B  C  D  Connection Size
508 (20) 79.4 (3.1) 79.4 (3.1) 
508 (20) 117 (4.6) 102 (4) 
635 (25) 146 (5.8) 156 (6.1)
445 (17.5) 
445 (17.5) 
521 (20.5
) 2 FNPT
FL901G, $1020,
shown smaller
than actual size.
1
FNPT
⁄
2
1 FNPT
B
AVAILABLE FOR FAST DELIVERY!
To Order (Specify Model Number)
Water Models Air Models
Model No. Price GPM inH2O NPT Model No. Price SCFM FNPT psig kg (lb) 
FL901G $1020 0.64 7 
FL902G 1020 2.26 41 
FL903G 1170 5.20 18 1 FL912G 1170 22.0 1 250 9 (20) 
FL904G 1170 12.60 13 1— ——— 250 9 (20)  
FL904P 1170 34.50 110 1 FL913P 1170 100.0 1 250 9 (20) 
FL906P 2250 34.00 24 1 
FL908P 2250 132.00 60 2 FL917P 2250 350.0 2 125 13.6 (30)
Comes complete with operator’s manual. 
“G” models have rib-guided floats; “P” models have pole-guided floats. FL917P requires minimum 30 psi outlet pressure to keep float from
becoming unstable. Weights shown are for both water and air models.
† For 5-point NIST calibration certificate add suffix “-NIST 5PT” to model number and $250 to price, or suffix “-NIST 10PT” for 10-point
calibration and $350 to price. 
Ordering Examples: FL906P, flowmeter for water, pole-guided float, 34 GPM max flow rate, 1 
FL901G, flowmeter for water, rib-guided float, 0.64 GPM max flow rate, 1
Max ∆P Max Max Pressure Wt.
1
FL910G $1020 2.7
⁄
2
1
FL911G 1020 10.2
⁄
2
1
FL915P 2170 102.0 1
⁄
2
1
NPT fitting, 300 psi maximum pressure, $1020.
⁄
2
1
NPT fitting, 150 psi maximum pressure, $2250.
⁄
2
1
⁄
2
1
⁄
2
1
⁄
2
300 9 (20) 
300 9 (20)
150 13.6 (30)
B-46

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