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Variable Area Rotameters
FL-1340 and FL-1440 Series   
1 year warranty Made in the USA
 
VARIABLE AREA ROTAMETERS
FL-1340 and FL-1440 Series:Variable Area Rotameters
Click for larger image.
   
$ 188.00  FL-1341-S
• Shielded for pressurized systems
• Panel mounting design
• Non-rising stem needle valve
• Compact, 65mm scale
• Easy-to-read 150mm scale

View related products - Variable Area Flowmeters, Rotameters & Switches

Click to scroll below to order See Specs PDF Related Items View a printer friendly page

SHIELDED FOR PRESSURIZED SYSTEMS
These rotameters, have heavy wall, precision-bored borosilicate glass metering tubes and are fully shielded against breakage, with end fittings of brass or stainless steel and aluminum side plates. In front, a clear plastic shield keeps the scale clean and easy-to-read, while an opaque white rear shield provides a background to aid in discerning the float position for accurate readings.

PANEL MOUNTING DESIGN
These rotameters are equipped with horizontal ports with NPT threads for easy panel mounting. The ports have external threads and are equipped with panel retaining nuts. No additional mounting hardware is required. Simply drill two holes 114.3mm (4.5") apart (center to center) for 65mm units or 223.8mm (8 13/16") apart (center to center) for 150mm units. Each hole should be 14.9mm (0.59") in diameter.

NON-RISING STEM NEEDLE VALVE
The 150 mm size flowmeters are also available with non-rising stem type needle valves for special applications. This 15-turn metering valve has superior flow rate control and is particularly well suited for use in chromatography applications. The sliding tapered needle mechanism virtually eliminates sticking or buildup due to foreign matter in the fluid stream, without variations or sawtoothing of the flow rate.

COMPACT 65 MM SCALE
These compact units feature ±10% of full scale accuracy and ±½% of full scale repeatability. They are ideal for applications involving purging, seal oil systems, bearing lubrication, and cooling water flow indication.

EASY-TO-READ 150 MM SCALE
OMEGA's larger units feature 5% accuracy and ¼% repeatability. The scale has more divisions for higher accuracy, is easier to read, and causes less eye fatigue.

APPLICATIONS
Variable area rotameters can be used in many applications, including industrial and laboratory situations. Some common uses include carrier gas flow and fuel flow in chromatography and coolant flow indication.

FLOW CONTROL
Control the flow rate with the standard built-in control valve. Also available, as an option, is an integral flow controller. In addition, 150 mm scale units are available with the unique non-rising stem type needle valve.

WETTED PARTS
Standard floats are 316 stainless steel, glass, and carboloy. Other wetted parts include the glass mtering tube, PTFE float stops, brass, aluminum, or 316 SS end fittings, and Buna (with brass or aluminum construction) or FKM-A (with 316 SS construction) O-rings.

RATINGS AND SPECIFICATIONS
The maximum operating pressure is 13.8 bar (200 psig), at temperatures up to 121°C (250°F). The minimum flow rate at the rated accuracy is 10% of the maximum flow rate. All connections are 1/8" female NPT threaded.

Rotameters with 65 mm Scale Flowtubes1 (with 6-turn valve)
Aluminum Frame
Model No.		 Brass Frame
Model No.		 316 SS Frame
Model No.		 Max. Flowrate2 Float Material
Air cc/min. Water cc/min.
FL-1341-GFL-1351-GFL-1361-G56.60.70Glass
FL-1341-SFL-1351-SFL-1361-S1503.00316SS
FL-1342-GFL-1352-GFL-1362-G66.60.80Glass
FL-1342-SFL-1352-SFL-1362-S183.33.67316SS
FL-1343-GFL-1353-GFL-1363-G4007.00Glass
FL-1343-SFL-1353-SFL-1363-S833.323.3316SS
FL-1344-GFL-1354-GFL-1364-G166640.0Glass
FL-1344-SFL-1354-SFL-1364-S3333100316SS
FL-1345-GFL-1355-GFL-1365-G5666142Glass
FL-1345-SFL-1355-SFL-1365-S10,833333316SS
FL-1346-GFL-1356-GFL-1366-G18,333500Glass
FL-1346-SFL-1356-SFL-1366-S38,0001166316SS
FL-1347-CFL-1357-CFL-1367-C56,6661666Carboloy
Minimum flowrate is 10% of the maximum rate shown.

Rotameters with 150 mm Scale Flowtubes1,3 (with 6 turn valve)
Aluminum Frame
Model No.		 Brass Frame
Model No.		 316 SS Frame
Model No.		 Max. Flowrate2 Float Material
Air cc/min. Water cc/min.
FL-1461-G490.537Glass
FL-1441-S FL-1461-S1462.49316SS
FL-1442-GFL-1452-GFL-1462-G961.11Glass
FL-1442-SFL-1452-SFL-1462-S2654.93316SS
FL-1443-GFL-1453-GFL-1463-G3705.75Glass
FL-1443-SFL-1453-SFL-1463-S82020.6316SS
FL-1444-GFL-1454-GFL-1464-G82016.6Glass
FL-1444-SFL-1454-SFL-1464-S168046.2316SS
FL-1445-GFL-1455-GFL-1465-G235052.8Glass
FL-1445-SFL-1455-SFL-1465-S4600133316SS
FL-1446-GFL-1456-GFL-1466-G380084.6Glass
FL-1446-SFL-1456-SFL-1466-S7600218316SS
FL-1447-GFL-1457-GFL-1467-G8600200Glass
FL-1447-SFL-1457-SFL-1467-S16,400493316SS
FL-1448-GFL-1458-GFL-1468-G23,500573Glass
FL-1448-SFL-1458-SFL-1468-S43,0001350316SS
FL-1448-CFL-1458-CFL-1468-C60,0001950Carboloy
Minimum flowrate is 10% of the maximum rate shown.
3.Low cost, stainless steel construction unit with 65 mm glass tube also available.

Rotameters with 150 mm Scale Flowtubes1 (with 15-turn valve)
Aluminum Frame
Model No.		 Brass Frame
Model No.		 316 SS Frame
Model No.		 Max. Flowrate2 Float Material
Air cc/min. Water cc/min.
FL-1471-G FL-1491-G490.537Glass
FL-1491-S1462.49316SS
FL-1472-GFL-1482-GFL-1492-G961.11Glass
FL-1472-SFL-1482-SFL-1492-S2654.93316SS
FL-1473-GFL-1483-GFL-1493-G3705.75Glass
FL-1473-SFL-1483-SFL-1493-S82020.6316SS
FL-1474-GFL-1484-GFL-1494-G82016.6Glass
FL-1474-SFL-1484-SFL-1494-S168046.2316SS
FL-1475-GFL-1485-GFL-1495-G235052.8Glass
FL-1475-SFL-1485-SFL-1495-S4600133316SS
FL-1476-GFL-1486-GFL-1496-G380084.6Glass
FL-1476-SFL-1486-SFL-1496-S7600218316SS
FL-1477-GFL-1487-GFL-1497-G8600200Glass
FL-1477-SFL-1487-SFL-1497-S16,400493316SS
FL-1478-GFL-1488-GFL-1498-G23,500573Glass
FL-1478-SFL-1488-SFL-1498-S43,0001350316SS
FL-1478-CFL-1488-CFL-1498-C60,0001950Carboloy
Minimum flowrate is 10% of the maximum rate shown.


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Most Popular Models Highlighted!
 Part Number   Availability   Price   Description    Qty.
 Aluminum Frame 65mm Rotameter Flowtubes with 6-Turn Valves
    FL-1341-G In Stock   $188.00    Max Air 56.6 cc/min, Water 0.70 cc/min  
    FL-1341-S In Stock   $188.00    Max Air 150 cc/min, Water 3.00 cc/min  
    FL-1342-G 7 Weeks   $188.00    Max Air 66.6 cc/min, Water 0.80 cc/min  
    FL-1342-S In Stock   $188.00    Max Air 183.3 cc/min, Water 3.67 cc/min  
    FL-1343-G In Stock   $188.00    Max Air 400 cc/min, Water 7.00 cc/min  
    FL-1343-S 7 Weeks   $188.00    Max 833.3 cc/min, Water 23.3 cc/min  
    FL-1344-G In Stock   $188.00    Max Air 1666 cc/min, Water 40.0 cc/min  
Click to expand/minimize a list of what others bought with the FL-1344-S  FL-1344-S In Stock   $188.00    Max Air 3333 cc/min, Water 100 cc/min  
    FL-1345-G In Stock   $188.00    Max Air 5666 cc/min, Water 142 cc/min  
    FL-1345-S In Stock   $188.00    Max Air 10,833 cc/min, Water 333 cc/min  
    FL-1346-G 7 Weeks   $188.00    Max Air 18,333 cc/min, Water 500 cc/min  
Click to expand/minimize a list of what others bought with the FL-1346-S  FL-1346-S In Stock   $188.00    Max Air 38,000 cc/min, Water 1166 cc/min  
    FL-1347-C 7 Weeks   $188.00    Max Air 56,666 cc/min, Water 1666 cc/min  
 Brass Frame 65mm Rotameter Flowtubes with 6-Turn Valves
    FL-1351-G In Stock   $185.00    Max Air 56.6 cc/min, Water 0.70 cc/min  
    FL-1351-S 7 Weeks   $185.00    Max Air 150 cc/min, Water 3.00 cc/min  
    FL-1352-G 7 Weeks   $185.00    Max Air 66.6 cc/min, Water 0.80 cc/min  
    FL-1352-S In Stock   $185.00    Max Air 183.3 cc/min, Water 3.67 cc/min  
    FL-1353-G In Stock   $185.00    Max Air 400 cc/min, Water 7.00 cc/min  
    FL-1353-S 7 Weeks   $185.00    Max Air 833.3 cc/min, Water 23.3 cc/min  
    FL-1354-G In Stock   $185.00    Max Air 1666 cc/min, Water 40.0 cc/min  
    FL-1354-S In Stock   $185.00    Max Air 3333 cc/min, Water 100 cc/min  
    FL-1355-G 7 Weeks   $185.00    Max Air 5666 cc/min, Water 142 cc/min  
    FL-1355-S In Stock   $185.00    Max Air 10,833 cc/min, Water 333 cc/min  
    FL-1356-G In Stock   $185.00    Max Air 18,333 cc/min, Water 500 cc/min  
    FL-1356-S In Stock   $185.00    Max Air 183.3 cc/min, Water 1166 cc/min  
    FL-1357-C 7 Weeks   $185.00    Max Air 56,666 cc/min, Water 1666 cc/min  
 316SS Frame 65mm Rotameter Flowtubes with 6-Turn Valves
    FL-1361-G In Stock   $325.00    Max Air 56.6 cc/min, Water 0.70 cc/min  
    FL-1361-S In Stock   $325.00    Max Air 150 cc/min, Water 3.00 cc/min  
    FL-1362-G 7 Weeks   $325.00    Max Air 66.6 cc/min, Water 0.80 cc/min  
    FL-1362-S In Stock   $325.00    Max Air 183.3 cc/min, Water 3.67 cc/min  
    FL-1363-G In Stock   $325.00    Max Air 400 cc/min, Water 7.00 cc/min  
    FL-1363-S In Stock   $325.00    Max Air 833.3 cc/min, Water 23.3 cc/min  
    FL-1364-G In Stock   $325.00    Max Air 1666 cc/min, Water 40.0 cc/min  
    FL-1364-S In Stock   $325.00    Max Air 3333 cc/min, Water 100 cc/min  
    FL-1365-G 7 Weeks   $325.00    Max Air 5666 cc/min, Water 142 cc/min  
    FL-1365-S In Stock   $325.00    Max Air 10,833 cc/min, Water 333 cc/min  
    FL-1366-G In Stock   $325.00    Max Air 18,333 cc/min, Water 500 cc/min  
    FL-1366-S In Stock   $325.00    Max Air 183.3 cc/min, Water 1166 cc/min  
    FL-1367-C In Stock   $325.00    Max Air 56,666 cc/min, Water 1666 cc/min  
 Aluminum Frame 150 mm Rotameter Flowtubes with 6-Turn Valves
    FL-1441-G    Consult sales   Max 49 cc/min, Water 0.537 cc/min  
    FL-1442-G 7 Weeks   $260.00    Max Air 96 cc/min, Water 1.11 cc/min  
    FL-1442-S In Stock   $260.00    Max 265 cc/min, Water 4.93 cc/min  
    FL-1443-G In Stock   $260.00    Max Air 370 cc/min, Water 5.75 cc/min  
    FL-1443-S 7 Weeks   $260.00    Max Air 820 cc/min, Water 20.6 cc/min  
    FL-1444-G In Stock   $260.00    Max Air 820 cc/min, Water 16.6 cc/min  
    FL-1444-S In Stock   $260.00    Max Air 1680 cc/min, Water 46.2 cc/min  
    FL-1445-G In Stock   $260.00    Max Air 2350 cc/min, Water 52.8 cc/min  
    FL-1445-S 4 Weeks   $260.00    Max Air 4600 cc/min, Water 133 cc/min  
    FL-1446-G In Stock   $260.00    Max Air 3800 cc/min, Water 84.6 cc/min  
    FL-1446-S In Stock   $260.00    Max Air 7600 cc/min, Water 218 cc/min  
    FL-1447-G In Stock   $260.00    Max Air 8600 cc/min, Water 200 cc/min  
    FL-1447-S 2 Weeks   $260.00    Max Air 16,400 cc/min, Water 493 cc/min  
    FL-1448-G In Stock   $260.00    Max Air 23,500 cc/min, Water 573 cc/min  
    FL-1448-S In Stock   $260.00    Max Air 43,000 cc/min, Water 1350 cc/min  
    FL-1448-C In Stock   $260.00    Max Air 60,000 cc/min, Water 1950 cc/min  
 Brass Frame 150 mm Rotameter Flowmeters with 6-Turn Valves
    FL-1452-G 7 Weeks   $255.00    Max Air 96 cc/min, Water 1.11 cc/min  
    FL-1452-S 7 Weeks   $255.00    Max Air 265 cc/min, Water 4.93 cc/min  
    FL-1453-G 7 Weeks   $255.00    Max Air 370 cc/min, Water 5.75 cc/min  
    FL-1453-S 7 Weeks   $255.00    Max Air 820 cc/min, Water 20.6 cc/min  
    FL-1454-G 7 Weeks   $255.00    Max Air 820 cc/min, Water 16.6 cc/min  
    FL-1454-S 7 Weeks   $255.00    Max Air 1680 cc/min, Water 46.2 cc/min  
    FL-1455-G 7 Weeks   $255.00    Max Air 2350 cc/min, Water 52.8 cc/min  
    FL-1455-S 7 Weeks   $255.00    Max Air 4600 cc/min, Water 133 cc/min  
    FL-1456-G In Stock   $255.00    Max Air 3800 cc/min, Water 84.6 cc/min  
    FL-1456-S 7 Weeks   $255.00    Max Air 7600 cc/min, Water 218 cc/min  
    FL-1457-G 7 Weeks   $255.00    Max Air 8600 cc/min, Water 200 cc/min  
    FL-1457-S In Stock   $255.00    Max Air 16,400 cc/min, Water 493 cc/min  
    FL-1458-G 7 Weeks   $255.00    Max Air 23,500 cc/min, Water 573 cc/min  
    FL-1458-S 7 Weeks   $255.00    Max Air 43,000 cc/min, Water 1350 cc/min  
    FL-1458-C 7 Weeks   $255.00    Max Air 60,000 cc/min, Water 1950 cc/min  
 316SS 150mm Rotameter Flowtubes with 6-Turn Valves
    FL-1461-G In Stock   $365.00    Max Air 49 cc/min, Water 0.537 cc/min  
    FL-1461-S In Stock   $365.00    Max Air 146 cc/min, Water 2.49 cc/min  
    FL-1462-G 7 Weeks   $395.00    Max Air 96 cc/min, Water 1.11 cc/min  
    FL-1462-S In Stock   $395.00    Max Air 265 cc/min, Water 4.93 cc/min  
    FL-1463-G 7 Weeks   $395.00    Max Air 370 cc/min, Water 5.75 cc/min  
    FL-1463-S In Stock   $395.00    Max Air 820 cc/min, Water 20.6 cc/min  
    FL-1464-G 7 Weeks   $395.00    Max Air 820 cc/min, Water 16.6 cc/min  
    FL-1464-S In Stock   $395.00    Max Air 1680 cc/min, Water 46.2 cc/min  
    FL-1465-G In Stock   $395.00    Max Air 2350 cc/min, Water 52.8 cc/min  
    FL-1465-S 5 Weeks   $395.00    Max Air 4600 cc/min, Water 133 cc/min  
    FL-1466-G In Stock   $395.00    Max Air 3800 cc/min, Water 84.6 cc/min  
    FL-1466-S 7 Weeks   $395.00    Max Air 7600 cc/min, Water 218 cc/min  
    FL-1467-G In Stock   $395.00    Max Air 8600 cc/min, Water 200 cc/min  
    FL-1467-S 7 Weeks   $395.00    Max Air 16,400 cc/min, Water 493 cc/min  
    FL-1468-G 7 Weeks   $395.00    Max Air 23,500 cc/min, Water 573 cc/min  
    FL-1468-S In Stock   $395.00    Max Air 43,000 cc/min, Water 1350 cc/min  
    FL-1468-C In Stock   $395.00    Max Air 60,000 cc/min, Water 1950 cc/min  
  Aluminum Frame 150mm Rotameter Flowtubes with 15-Turn Valves
    FL-1471-G In Stock   $305.00    Max Air 49 cc/min, Water 0.537 cc/min  
    FL-1472-G In Stock   $330.00    Max Air 96 cc/min, Water 1.11 cc/min  
    FL-1472-S In Stock   $330.00    Max Air 265 cc/min, Water 4.93 cc/min  
    FL-1473-G 7 Weeks   $330.00    Max Air 370 cc/min, Water 5,75 cc/min  
    FL-1473-S 7 Weeks   $330.00    Max Air 820 cc/min, Water 20.6 cc/min  
    FL-1474-G In Stock   $330.00    Max Air 820 cc/min, Water 16.6 cc/min  
    FL-1474-S In Stock   $330.00    Max Air 1680 cc/min, Water 46.2 cc/min  
    FL-1475-G 7 Weeks   $330.00    Max Air 2350 cc/min, Water 52.8 cc/min  
    FL-1475-S In Stock   $330.00    Max Air 4600 cc/min, Water 133 cc/min  
    FL-1476-G In Stock   $330.00    Max Air 3800 cc/min, Water 84.6 cc/min  
    FL-1476-S 7 Weeks   $330.00    Max Air 7600 cc/min, Water 218 cc/min  
    FL-1477-G 7 Weeks   $330.00    Max Air 8600 cc/min, Water 200 cc/min  
    FL-1477-S 7 Weeks   $330.00    Max Air 16,400 cc/min, Water 493 cc/min  
    FL-1478-G In Stock   $330.00    Max Air 23,500 cc/min, Water 573 cc/min  
    FL-1478-S 7 Weeks   $330.00    Max Air 43,000 cc/min, Water 1350 cc/min  
    FL-1478-C 7 Weeks   $330.00    Max Air 60,000 cc/min, Water 1950 cc/min  
 Brass Frame 150mm Rotameter Flowtubes with 15- Turn Valves
    FL-1482-G 7 Weeks   $330.00    Max Air 96 cc/min, Water 1.11 cc/min  
    FL-1482-S 7 Weeks   $330.00    Max Air 265 cc/min, Water 4.93 cc/min  
    FL-1483-G 7 Weeks   $330.00    Max Air 370 cc/min, Water 5.75 cc/min  
    FL-1483-S 7 Weeks   $330.00    Max Air 820 cc/min, Water 20.6 cc/min  
    FL-1484-G In Stock   $330.00    Max Air 820 cc/min, Water 16.6 cc/min  
    FL-1484-S In Stock   $330.00    Max Air 1680 cc/min, Water 46.2 cc/min  
    FL-1485-G 7 Weeks   $330.00    Max Air 2350 cc/min, Water 52.8 cc/min  
    FL-1485-S 7 Weeks   $330.00    Max Air 4600 cc/min, Water 133 cc/min  
    FL-1486-G 7 Weeks   $330.00    Max Air 3800 cc/min, Water 84.6 cc/min  
    FL-1486-S 7 Weeks   $330.00    Max Air 7600 cc/min, Water 218 cc/min  
    FL-1487-G 7 Weeks   $330.00    Max Air 8600 cc/min, Water 200 cc/min  
    FL-1487-S 7 Weeks   $330.00    Max Air 16,400 cc/min, Water 493 cc/min  
    FL-1488-G 7 Weeks   $330.00    Max air 23,500 cc/min, Water 573 cc/min  
    FL-1488-S 7 Weeks   $330.00    Max Air 43,000 cc/min, Water 1350 cc/min  
    FL-1488-C In Stock   $330.00    Max Air 60,000 cc/min, Water 1950 cc/min  
 316SS Frame 150mm Rotameter Flowtubes with 15- Turn Valves
    FL-1491-G In Stock   $480.00    Max Air 49 cc/min, Water 0.537 cc/min  
    FL-1492-G 7 Weeks   $520.00    Max Air 96 cc/min, Water 1.11 cc/min  
    FL-1492-S 7 Weeks   $520.00    Max Air 265 cc/min, Water 4.93 cc/min  
    FL-1493-G 7 Weeks   $520.00    Max Air 370 cc/min, Water 5,75 cc/min  
    FL-1493-S 7 Weeks   $520.00    Max Air 820 cc/min, Water 20.6 cc/min  
    FL-1494-G 7 Weeks   $520.00    Max Air 820 cc/min, Water 16.6 cc/min  
    FL-1494-S In Stock   $520.00    Max Air 1680 cc/min, Water 46.2 cc/min  
    FL-1495-G In Stock   $520.00    Max Air 2350 cc/min, Water 52.8 cc/min  
    FL-1495-S In Stock   $520.00    Max Air 4600 cc/min, Water 133 cc/min  
    FL-1496-G In Stock   $520.00    Max Air 3800 cc/min, Water 84.6 cc/min  
    FL-1496-S In Stock   $520.00    Max Air 7600 cc/min, Water 218 cc/min  
    FL-1497-G 7 Weeks   $520.00    Max Air 8600 cc/min, Water 200 cc/min  
    FL-1497-S 7 Weeks   $520.00    Max Air 16,400 cc/min, Water 493 cc/min  
    FL-1498-G In Stock   $520.00    Max Air 23,500 cc/min, Water 573 cc/min  
    FL-1498-S In Stock   $520.00    Max Air 43,000 cc/min, Water 1350 cc/min  
    FL-1498-C In Stock   $520.00    Max Air 60,000 cc/min, Water 1950 cc/min  
† All dollar amounts on this site are shown in US currency.

 Note: Comes complete with correlation tables for air and water and operator's manual.

For a glass float, add suffix "-G".

For a 316SS float, add suffix "-S".

For a carboloy float, add suffix "-C".


  Ordering Example: (1) FL-1355-S Brass Frame, 65mm Rotameter, Float Material -Stainless Steel, Max Air 10.8 L/min, Water : 0.333 L/min, $185.00

 Related Links - Related Products
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65 mm and 150 mm Rotameters
   
Keywords:VARIABLE AREA, ROTAMETERS, FLOWMETER, FLOW METER, TUBE AND FLOAT, flow measurement, liquid flow sensor, plastic solenoid valve pneumatic flow control valve pneumatic flow control valves tubular elements

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