GPI - Great Plains Industries FLOMEC OM Series Data Sheet

PRODUCT CONFIGURATION

OM SERIES MECHANICAL FLOWMETER

Volumetric ow measurement of clean liquids. Suitable for
applications for safe area metering of fuel oils, lubricants, and
other non-ammable viscous chemicals.

FEATURES / BENEFITS

• High accuracy oval gear technology with low pressure
drop can be used in gravity-fed applications

• No requirement for ow conditioning or straight pipe
runs makes them ideal for compact installations with
limited space

• Robust aluminum mechanical registers

• Optional air eliminator/strainers

PRODUCT IDENTIFIER

OM = Oval Gear Meter

METER SIZE

015 = 1/2” (15 mm), 0.26-10.6 GPM (1-40 L/min)
025 = 1” (25 mm), 2.6-40 GPM (10-150 L/min)
040 = 1 1/2” (40 mm), 4-66 GPM (15-250 L/min)
050 = 2” (50 mm), 8-130 GPM (30-500 L/min) (PPS rotors)
080 = 3” (80 mm), 10-200 GPM (35-750 L/min)
080E = 3” Extended ow (80 mm), 13-260 GPM (50-1000 L/min)
100 = 4” (100 mm), 20-400 GPM (75-1550 L/min)
100E = 4” Extended Flow (100 mm), 40-660 GPM (150-2500 L/

2

min) (only available with Aluminum Rotors)

BODY MATERIAL

A = Aluminum
E = Extended ow Aluminum (OM080E & OM100E)
S = 316L Stainless Steel (OM015 -OM080)

ROTOR MATERIAL / BEARING TYPE

00 = PPS / No Bearing
10 = Keishi cut PPS / No Bearing
44 = Aluminum / hardened steel roller bearing (OM100E only)
51 = Stainless Steel / Carbon Ceramic (OM015-OM080)
71 = Keishi cut, Stainless Steel / Carbon Ceramic (OM015-OM080)

(for high viscosity liquids)

O-RING MATERIAL

1 = Viton™ 5º F minimum (-15º C)
3 = Teon encapsulated Viton™ (includes KALREZ shaft seals on

080 - 100E sizes) 5º F minimum (-15º C)

4 = Buna-N (Nitrile), -40º F minimum (-40º C)

1

3

4

5

PROCESS CONNECTIONS

00 = No ttings (025-100E)
10 = BSPP (G) female threaded (ISO 228)
20 = NPT female threaded
40 = ANSI-150 RF Flanged
50 = ANSI-300 RF Flanged (015-050)
60 = PN16 DIN Flanged

MECHANICAL REGISTERS

M3 = 4 digit mechanical totalizer - litre

Totalizer capacity
(OM015-OM040) 9999.9 litre
(OM050-OM100E) 99999 litre

M4 = 4 digit mechanical totalizer - US gallons

Totalizer capacity
(OM015-OM040) 9999.9 gallon
(OM050-OM100E) 99999 gallon

V1 = 5 digit mechanical reset register - litre

Total capacity
(OM50-OM100E) 999999 litre

7

8

1 2 3 4 5 6 7 8

--->>>> OM 100 A 51 1 -8 10 M3

APPLICATIONS

MAXIMUM TEMPERATURE LIMIT

-8 = 176º F (80º C) maximum

6

• Automotive

• Aviation

• Mining

• Power

• Chemical

• Pharmaceutical

• Food

• Paint

• Petroleum Industries

• Environmental Applications

© 2019 Great Plains Industries, Inc. All Rights Reserved.

SPECIFICATIONS

OM015 OM025 OM040 OM050 OM080 OM80E OM100 OM100E

Nominal Size: 1/2” (15 mm) 1” (25 mm)

Nominal Flow
Range* @ 3cP:

Accuracy: ±1% of reading for M registers ±1% of reading for M registers (±0.5% for V registers)

Repeatability: Typically ± 0.03% of reading

Ambient Temp.
Range

Max. Pressure
(threaded)

M Register 4 digit resettable & NEMA 4 (IP65)

V Register n/a 5 digit resettable & NEMA 3S (IP54)

Recommended
Filtration:

Face-to-Face
Dimension A ­Threaded

Face-to-Face
Dimension A ­Flanged

Meter Base-to­Register Top ­Dimension B

Meter Cap Width

0.26-10.6
GPM

(1 - 40
L/min)

580 psi
(40 bar)

4.33”

(110 mm)

7.44”

(189 mm)

7.01”

(178 mm)

4.33”

(110 mm)

2.6-40
GPM

(10-150

L/min)

580 psi
(40 bar)

100 mesh (150 m) 40 mesh (400 m)

5.39”

(137 mm) AL

6.93”

(176 mm) SS

7.8”

(198 mm) AL

9.33”

(237 mm) SS

7.4”

(188 mm) AL

8.43”

(214 mm) SS

4.72”

(120 mm)

1-1/2” (40

mm)

4-66

GPM

(15-250

L/min)

435 psi
(30 bar)

7.4”

(188 mm)

9.92”

(252 mm)

8.94”

(227 mm)

6.23”

(160 mm)

2” (50 mm) 3” (80 mm) 3” (80 mm) 4” (100 mm) 4” (100 mm)

8-118 GPM

(30-450 L/min)

(SS rotors)

8-130 GPM

(30-500 L/min)

(PPS rotors)

5 F - 176 F (-15 C - 80 C)

285 psi
(20 bar)

8.35”

(212 mm)

10.91”

(277 mm)

9.33”

(237 mm)

7.09”

(180 mm)

10-200

GPM

(35-750

L/min)

175 psi
(12 bar)

10.5”

(266 mm)

13.93”

(354 mm)

10.63”

(270 mm)

9.53”

(242 mm)

13-260

GPM

(50-1000

L/min)

175 psi

(12 bar)

11.6”

(294 mm)

15.04”

(382 mm)

11.34”

(288 mm)

11.5”

(292 mm)

20-400

GPM

(75-1500

L/min)

145 psi

(10 bar)

11.6”

(294 mm)

15.28”

(388 mm)

13.11”

(333 mm)

11.5”

(292 mm)

40-660

GPM

(150-2500

L/min)

145 psi

(10 bar)

12.6”

(320 mm)

16.3”

(414 mm)

16.4”

(416 mm)

13.1”

(332 mm)

*Maximum ow reduces as viscosity increases, see ow de-rating guide.
Max recommended Pressure drop is 14.5 psi (1 bar).

DIMENSIONS

APPROVALS

NEMA

3S / 4

IP54/65

03/19 IND-1086_OM_Mechanical Flowmeter