®
Technical Specifications
FM182 Direct
®
INSTRUMENTS, LLC.
Product Data Sheet
PDS-FM182-
2026-07-31
Series 182 Direct Drive
Meters
Description
The Series 182 Direct Drive Meters are
designed to provide accurate and reliable flow
measurements where mainline service is
required in the municipal and industrial areas.
These meters have been used for over seventy
years and have proven their reputation for
rugged, continuous duty with minimum
maintenance.
This meter can be easily maintained or repaired
with standard tools. The mechanical worm and
gear drive is positive and prevents the
possibility of slippage and low readings.
The meter is available as a meterhead only or a
meterhead complete with saddle or tube.
See
PDS-110.
Temperature Limits
Liquid working temperatures should not exceed
100°F. Propellers may be stored in air
temperatures up to 175°F.
Principle of Operation
Sparling propeller meters utilize the simple
principle of the screw propeller to register the
total flow, much as an odometer registers auto
mileage. The rotation of the propeller affords a
basis for indicating and recording gallons per
minute or other rates.
Installation
Meters must be installed in full flowing suction
or discharge lines. Avoid valves, fittings or
obstructions immediately upstream of the
meter which may cause jetting or
non-symmetrical flow profiles. It is
recommended that a minimum of five straight
pipe diameters be maintained upstream and
one diameter downstream of the flow meter.
Certified Accuracy
Accuracy is within 2% of actual flow for the
specified meter range. This accuracy is
guaranteed by certified wet calibration at three
test points in Sparling's NIST traceable primary
flow laboratory. Each meter is tested at low
flow, mid-range, and high flow. A test
certificate is provided with each meter.
Flow Ranges
These meters measure accurately over a wide
flow range of 10:1 or greater. The maximum
flow ranges can be safely exceeded by 50%
when used intermittently. Flow rates are
provided in the table under specifications for
each of the sizes.
Anticipated flow ranges and minimum and
normal flow rates should always be specified
on application sheets accompanying your
order.
®
INSTRUMENTS, LLC.
Options
High Velocity Flows
- If the minimum actual flow rate exceeds
the minimum published flow rate in Table 1, high velocity
construction is required. Specially configured propellers and
bearings are used.
When continuous flow rates exceed twice the minimum
standard flow rate in Table 1, high velocity construction is
required.
Anticipated flow ranges and minimum and normal flow rates
should always be specified on application sheets accompanying
your order. This information is required for proper evaluation of
meter construction.
Transmitters
- Electronic transmitters are available for
installation on these meters.
See PDS-190.
Rate-of-Flow Indicators
- When continuous rate of flow
indication is required, an optional rate-of-flow indicator and
totalizer is available.
See PDS-190.
The meter cover plate has the same drilling as a standard 150#
Class D flange. This size is indicated by dimension "A".
Rolled steel welding-type saddles are furnished to conform to
the O.D. pipe diameter specified by the customer. "M" Drop Pipe
can be lengthened for use in concrete pipe or for special
application.
Meters are calibrated to the I.D. pipe diameter specified by
customer. Straightening vanes should be installed immediately
upstream from the propeller to insure straight flow for accurate
metering.
Size
Flow Range (GPM)
Standard
High
16
350 - 3800
700 - 6800
18
450 - 4500
900 - 8100
20
550 - 5500
1100 - 9900
24
1200 - 8000
2400 - 15300
30
1500 - 1200
3000 - 21600
36
1500 - 16000
3000 - 28800
42
2100 - 22000
4200 - 40000
48
2700 - 28000
5400 - 50000
54
3400 - 35000
6800 - 63000
60
4200 - 42000
8400 - 76000
66
5000 - 50000
10000 - 90000
72
6000 - 60000
12000 - 110000
Table 1: BaseModelNumber
FM182
-
Basic Direct Drive Meterhead
Table 2: Size
16
-
16"
18
-
18"
20
-
20"
24
-
24"
30
-
30"
36
-
36"
42
-
42"
48
-
48"
54
-
54"
60
-
60"
66
-
66"
72
-
72"
Table 3: PressureRating
1
-
150 psi
2
-
250 psi
Table 4: MDimension
1
-
Standard
6
-
Special
Table 5: FlowRange
1
-
Standard Range
2
-
High Range
Table 6: Readouts
0
-
None
Table 7: Accessories
0
-
None
1
-
Register Extension
Model
Size
Pressure
M Dim
Flow
Readouts
Access.
FM182
16
1
1
1
0
0
*
If meter is operated continuously at flows above the mid-point of the standard flow range, rubber bearings are required.
®
INSTRUMENTS, LLC.
Flow Rates & Dimensions
Size (in)
16
18
20
24
30
36
42
48
54
60
66
72
A
16
16
16
16
16
24
24
30
30
30
30
30
B
25.5
25.5
25.5
25.5
25.5
36
36
43
43
43
43
43
C
14
16
16
16
16
25.5
25.5
38.38
38.38
38.38
38.38
38.38
Min. D
4.5
4.5
4.25
4.5
4.5
6
6
6.5
6.5
6.5
6.5
6.5
F
16
18
20
24
30
36
42
48
54
60
66
72
G
4.56
4.56
4.56
4.56
4.56
6.81
6.81
9.81
9.81
9.81
9.81
9.81
H
4.25
4.25
4.25
4.25
4.25
6.5
6.5
9.5
9.5
9.5
9.5
9.5
M
12.25
13.5
14.5
16.5
19.5
24
27
30.5
33.5
36.5
39.5
42.5
N
4.13
4.13
4.13
4.13
4.13
4.63
4.63
5.5
5.5
5.5
5.5
5.5
S
*
26
26
26
26
36.5
36.5
46.75
46.75
46.75
46.75
46.75
T
12
12
12
12
12
18.75
18.75
20
20
20
20
20
Bolt Circle
22.5
22.5
22.5
22.5
22.5
32
32
39.25
39.25
39.25
39.25
39.25
Size of Bolts
1
1
4
1
1
4
1
1
4
1
1
4
1
1
4
1
1
2
1
1
2
1
1
4
1
1
4
1
1
4
1
1
4
1
1
4
Number Of Bolts
20
20
20
20
20
24
24
28
28
28
28
28
*
Weight of complete meter less straightening vanes.
*
Factory can advise Rates and Dimensions for meters up to 120" in size
