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Variable Area Rotameters

FL-1340 and FL-1440 Series

VARIABLE AREA ROTAMETERS

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^$ 162.00 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 and Rotameters

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. Also available is a flush mounting bezel, and other styles to meet specific applications. Please consult the Sales Department for pricing and delivery information.

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. Sapphire and tantalum are also available (consult Sales Department for specifications). 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
Aluminum Frame Model No.	Brass Frame Model No.	316 SS Frame Model No.	Air cc/min.	Water cc/min.	Float Material
FL-1341-G	FL-1351-G	FL-1361-G	56.6	0.70	Glass
FL-1341-S	FL-1351-S	FL-1361-S	150	3.00	316SS
FL-1342-G	FL-1352-G	FL-1362-G	66.6	0.80	Glass
FL-1342-S	FL-1352-S	FL-1362-S	183.3	3.67	316SS
FL-1343-G	FL-1353-G	FL-1363-G	400	7.00	Glass
FL-1343-S	FL-1353-S	FL-1363-S	833.3	23.3	316SS
FL-1344-G	FL-1354-G	FL-1364-G	1666	40.0	Glass
FL-1344-S	FL-1354-S	FL-1364-S	3333	100	316SS
FL-1345-G	FL-1355-G	FL-1365-G	5666	142	Glass
FL-1345-S	FL-1355-S	FL-1365-S	10,833	333	316SS
FL-1346-G	FL-1356-G	FL-1366-G	18,333	500	Glass
FL-1346-S	FL-1356-S	FL-1366-S	36,666	1166	316SS
FL-1347-C	FL-1357-C	FL-1367-C	56,666	1666	Carboloy

1.Low cost units with PVDF construction also available.
2.Minimum flowrate is 10% of the maximum rate shown.

Rotameters with 150 mm Scale Flowtubes^1,3 (with 6 turn valve)

Aluminum Frame Model No.	Brass Frame Model No.	316 SS Frame Model No.	Max. Flowrate²		Float Material
Aluminum Frame Model No.	Brass Frame Model No.	316 SS Frame Model No.	Air cc/min.	Water cc/min.	Float Material
FL-1441-G	FL-1451-G	FL-1461-G	49	0.537	Glass
FL-1441-S	FL-1451-S	FL-1461-S	146	2.49	316SS
FL-1442-G	FL-1452-G	FL-1462-G	96	1.11	Glass
FL-1442-S	FL-1452-S	FL-1462-S	265	4.93	316SS
FL-1443-G	FL-1453-G	FL-1463-G	370	5.75	Glass
FL-1443-S	FL-1453-S	FL-1463-S	820	20.6	316SS
FL-1444-G	FL-1454-G	FL-1464-G	820	16.6	Glass
FL-1444-S	FL-1454-S	FL-1464-S	1680	46.2	316SS
FL-1445-G	FL-1455-G	FL-1465-G	2350	52.8	Glass
FL-1445-S	FL-1455-S	FL-1465-S	4600	133	316SS
FL-1446-G	FL-1456-G	FL-1466-G	3800	84.6	Glass
FL-1446-S	FL-1456-S	FL-1466-S	7600	218	316SS
FL-1447-G	FL-1457-G	FL-1467-G	8600	200	Glass
FL-1447-S	FL-1457-S	FL-1467-S	16,400	493	316SS
FL-1448-G	FL-1458-G	FL-1468-G	23,500	573	Glass
FL-1448-S	FL-1458-S	FL-1468-S	43,000	1350	316SS
FL-1448-C	FL-1458-C	FL-1468-C	60,000	1950	Carboloy

1.Low cost units with PVDF construction also available.
2.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
Aluminum Frame Model No.	Brass Frame Model No.	316 SS Frame Model No.	Air cc/min.	Water cc/min.	Float Material
FL-1471-G	FL-1481-G	FL-1491-G	49	0.537	Glass
FL-1471-S	FL-1481-S	FL-1491-S	146	2.49	316SS
FL-1472-G	FL-1482-G	FL-1492-G	96	1.11	Glass
FL-1472-S	FL-1482-S	FL-1492-S	265	4.93	316SS
FL-1473-G	FL-1483-G	FL-1493-G	370	5.75	Glass
FL-1473-S	FL-1483-S	FL-1493-S	820	20.6	316SS
FL-1474-G	FL-1484-G	FL-1494-G	820	16.6	Glass
FL-1474-S	FL-1484-S	FL-1494-S	1680	46.2	316SS
FL-1475-G	FL-1485-G	FL-1495-G	2350	52.8	Glass
FL-1475-S	FL-1485-S	FL-1495-S	4600	133	316SS
FL-1476-G	FL-1486-G	FL-1496-G	3800	84.6	Glass
FL-1476-S	FL-1486-S	FL-1496-S	7600	218	316SS
FL-1477-G	FL-1487-G	FL-1497-G	8600	200	Glass
FL-1477-S	FL-1487-S	FL-1497-S	16,400	493	316SS
FL-1478-G	FL-1488-G	FL-1498-G	23,500	573	Glass
FL-1478-S	FL-1488-S	FL-1498-S	43,000	1350	316SS
FL-1478-C	FL-1488-C	FL-1498-C	60,000	1950	Carboloy

1.Low cost units with PVDF construction also available.
2.Minimum flowrate is 10% of the maximum rate shown.

To Order (Specify Model Number)

Part Number	Availability	Price	Description	Qty.


Aluminum Frame 65mm Rotameter Flowtubes with 6-Turn Valves

FL-1341-S		$162.00	Max Air 150 cc/min, Water 3.00 cc/min	qty.
FL-1342-S		$162.00	Max Air 183.3 cc/min, Water 3.67 cc/min	qty.
FL-1343-G	3 Weeks	$162.00	Max Air 400 cc/min, Water 7.00 cc/min	qty.
FL-1344-G		$162.00	Max Air 1666 cc/min, Water 40.0 cc/min	qty.
FL-1345-G		$162.00	Max Air 5666 cc/min, Water 142 cc/min	qty.
FL-1345-S		$162.00	Max Air 10,833 cc/min, Water 333 cc/min	qty.
FL-1346-S		$162.00	Max Air 183.3 cc/min, Water 1166 cc/min	qty.

Brass Frame 65mm Rotameter Flowtubes with 6-Turn Valves

FL-1351-G		$162.00	Max Air 56.6 cc/min, Water 0.70 cc/min	qty.
FL-1354-G		$162.00	Max Air 1666 cc/min, Water 40.0 cc/min	qty.
FL-1354-S		$162.00	Max Air 3333 cc/min, Water 100 cc/min	qty.
FL-1355-S		$162.00	Max Air 10,833 cc/min, Water 333 cc/min	qty.

316SS Frame 65mm Rotameter Flowtubes with 6-Turn Valves

FL-1361-G		$291.00	Max Air 56.6 cc/min, Water 0.70 cc/min	qty.
FL-1361-S		$291.00	Max Air 150 cc/min, Water 3.00 cc/min	qty.
FL-1362-S		$291.00	Max Air 183.3 cc/min, Water 3.67 cc/min	qty.
FL-1363-G		$291.00	Max Air 400 cc/min, Water 7.00 cc/min	qty.
FL-1363-S		$291.00	Max Air 833.3 cc/min, Water 23.3 cc/min	qty.
FL-1364-G		$291.00	Max Air 1666 cc/min, Water 40.0 cc/min	qty.
FL-1365-S		$291.00	Max Air 10,833 cc/min, Water 333 cc/min	qty.
FL-1366-G		$291.00	Max Air 18,333 cc/min, Water 500 cc/min	qty.
FL-1367-C		$291.00	Max Air 56,666 cc/min, Water 1666 cc/min	qty.

Aluminum Frame 150 mm Rotameter Flowtubes with 6-Turn Valves

FL-1441-G		$232.00	Max Air 49 cc/min, Water 0.537 cc/min	qty.
FL-1441-S		$232.00	Max 146 cc/min, Water 2.49 cc/min	qty.
FL-1442-S		$232.00	Max 265 cc/min, Water 4.93 cc/min	qty.
FL-1443-G		$232.00	Max Air 370 cc/min, Water 5.75 cc/min	qty.
FL-1444-G	1 Week	$232.00	Max Air 820 cc/min, Water 16.6 cc/min	qty.
FL-1444-S		$232.00	Max Air 1680 cc/min, Water 46.2 cc/min	qty.
FL-1445-G		$232.00	Max Air 2350 cc/min, Water 52.8 cc/min	qty.
FL-1446-G		$232.00	Max Air 3800 cc/min, Water 84.6 cc/min	qty.
FL-1447-S		$232.00	Max Air 16,400 cc/min, Water 493 cc/min	qty.
FL-1448-G		$232.00	Max Air 23,500 cc/min, Water 573 cc/min	qty.
FL-1448-S		$232.00	Max Air 43,000 cc/min, Water 1350 cc/min	qty.
FL-1448-C		$232.00	Max Air 60,000 cc/min, Water 1950 cc/min	qty.

Brass Frame 150 mm Rotameter Flowmeters with 6-Turn Valves

FL-1456-G		$232.00	Max Air 3800 cc/min, Water 84.6 cc/min	qty.
FL-1457-S		$232.00	Max Air 16,400 cc/min, Water 493 cc/min	qty.

316SS 150mm Rotameter Flowtubes with 6-Turn Valves

FL-1461-G		$361.00	Max Air 49 cc/min, Water 0.537 cc/min	qty.
FL-1461-S		$361.00	Max Air 146 cc/min, Water 2.49 cc/min	qty.
FL-1462-S		$361.00	Max Air 265 cc/min, Water 4.93 cc/min	qty.
FL-1463-S		$361.00	Max Air 820 cc/min, Water 20.6 cc/min	qty.
FL-1465-G		$361.00	Max Air 2350 cc/min, Water 52.8 cc/min	qty.
FL-1465-S		$361.00	Max Air 4600 cc/min, Water 133 cc/min	qty.
FL-1467-G		$361.00	Max Air 8600 cc/min, Water 200 cc/min	qty.
FL-1468-S		$361.00	Max Air 43,000 cc/min, Water 1350 cc/min	qty.

Aluminum Frame 150mm Rotameter Flowtubes with 15-Turn Valves

FL-1471-G		$300.00	Max Air 49 cc/min, Water 0.537 cc/min	qty.
FL-1474-S		$300.00	Max Air 1680 cc/min, Water 46.2 cc/min	qty.
FL-1475-S		$300.00	Max Air 4600 cc/min, Water 133 cc/min	qty.

Brass Frame 150mm Rotameter Flowtubes with 15- Turn Valves

FL-1488-C		$300.00	Max Air 60,000 cc/min, Water 1950 cc/min	qty.

316SS Frame 150mm Rotameter Flowtubes with 15- Turn Valves

FL-1491-G		$476.00	Max Air 49 cc/min, Water 0.537 cc/min	qty.
FL-1491-S		$476.00	Max Air 146 cc/min, Water 2.49 cc/min	qty.
FL-1494-S		$476.00	Max Air 1680 cc/min, Water 46.2 cc/min	qty.
FL-1495-G		$476.00	Max Air 2350 cc/min, Water 52.8 cc/min	qty.
FL-1495-S		$476.00	Max Air 4600 cc/min, Water 133 cc/min	qty.
FL-1496-G		$476.00	Max Air 3800 cc/min, Water 84.6 cc/min	qty.
FL-1496-S		$476.00	Max Air 7600 cc/min, Water 218 cc/min	qty.
FL-1498-G		$476.00	Max Air 23,500 cc/min, Water 573 cc/min	qty.
FL-1498-S		$476.00	Max Air 43,000 cc/min, Water 1350 cc/min	qty.
FL-1498-C		$476.00	Max Air 60,000 cc/min, Water 1950 cc/min	qty.

† All dollar amounts on this site are shown in US currency.

Note: Comes with correlation sheet for air and water.

"-G" Suffix denotes glass float; "-S" Suffix denotes 316 SS float; "-C" Suffix denotes carboloy float.

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 = $162.00

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Keywords.:VARIABLE AREA, ROTAMETERS, FLOWMETER, FLOW METER, TUBE AND FLOAT, flow measurement