F-451 Flowmeter Specifications

Model F-451N Series High Volume In-Line Units
Model Number
 GPM 
LPM
Adapter Size F/NPT
F-451006LHN
.05 - 6
1" F/NPT
F-451001LHN
1.0 - 10
4 - 40
1" F/NPT
F-451002LHN
2.0 - 20
8 - 80
 1" F/NPT 
F-451003LHN
3.0 - 30
10 - 115
1" F/NPT
F-451004LHN
4.0 - 40
15 - 155
1" F/NPT
Model Number
Calibration SCFM
Adapter Size F/NPT
F-451002GHN
8 - 80
1" F/NPT

Model F-451N Units With 90° Elbows

Model Number
 GPM 
LPM
Adapter Size F/NPT
F-451006LHNE
0.5 - 6
-
1" F/NPT
F-451001LHNE
1.0 - 10
  4 - 40
1" M/NPT
F-451002LHNE
2.0 - 20
8 - 80
 1" M/NPT 
F-451003LHNE
3.0 - 30
12 - 115
1" M/NPT
F-451004LHNE
4.0 - 40
15 - 155
1" M/NPT

Model F-451N Units With Polycarbonate Shield 
Model Number
 GPM 
LPM
Adapter Size F/NPT
F-451006LHNC
0.5 - 6
-
1" F/NPT
F-451001LHNC
1.0 - 10
  4 - 40
1" F/NPT
F-451002LHNC
2.0 - 20
8 - 80
 1" F/NPT 
F-451003LHNC
3.0 - 30
12 - 115
1" F/NPT
F-451004LHNC
4.0 - 40
15 - 155
1" F/NPT

Model F-451N Units With Brass Adapters
Model Number
 GPM 
LPM
Adapter Size F/NPT
F-451006LHBSN
.5 - 6
-
1" SWEAT
F-451006LHBN
.5 - 6
-
1" F/NPT
F-451001LHBSN
1 - 10
4 - 40
 1" SWEAT
F-451001LHBPN
1 - 10
4 - 40
1" F/NPT
F-451002LHBSN
2 - 20
8 - 80
1" SWEAT
F-451002LHBPN
2 - 20
8 - 80
1" F/NPT
F-451003LHBSN
3 - 30
12 - 115
1" SWEAT
F-451003LHBPN
3 - 30
12 - 115
1" F/NPT
F-451004LHBSN
4 - 40
15 - 155
1" SWEAT
F-451004LHBPN
4 - 40
15 - 155
1" F/NPT

Model F-451N
Specially Equipped

Model Number
 GPM 
LPM
Adapter Size F/NPT
F-451006LHKN*
0.5 - 6
-
1" F/NPT
F-451001LHKN**
1.0 - 10
  4 - 40
1" F/NPT
F-451002LHKN
2.0 - 20
8 - 80
 1" F/NPT 
F-451003LHKN
3.0 - 30
12 - 115
1" F/NPT
F-451004LHKN
4.0 - 40
15 - 155
1" F/NPT
* 0.5 - 6.0 Teflon Float , ** 1.0 - 10 Teflon Float

Model F-450KEA Specially Equipped Adjustable Units  
Model Number
 GPM 
LPM
Adapter Size F/NPT
F-451006LHN-24
0.5 - 6
-
1 -1/2" F/NPT
F-451001LHN-24
1.0 - 10
  4 - 40
1 -1/2" F/NPT
F-451002LHN-24
2.0 - 20
8 - 80
 1 -1/2" F/NPT 
F-451003LHN-24
3.0 - 30
12 - 115
1 -1/2" F/NPT
F-451004LHN-24
4.0 - 40
15 - 155
1 -1/2" F/NPT
Calibration SCFM
F-451002GHN-24
8 - 80
1 -1/2" F/NPT

Model F-451N Series With 1 - 1/2" F/NPT, PVC Adapters and Polycarbonate Shield
Model Number
 GPM 
LPM
Adapter Size F/NPT
F-451006LHNC-24
0.5 - 6
-
1 -1/2" F/NPT
F-451001LHNC-24
1.0 - 10
  4 - 40
1 -1/2" F/NPT
F-451002LHNC-24
2.0 - 20
8 - 80
 1 -1/2" F/NPT 
F-451003LHNC-24
3.0 - 30
12 - 115
1 -1/2" F/NPT
F-451004LHNC-24
4.0 - 40
15 - 155
1 -1/2" F/NPT
Calibration SCFM
F-451002GHNC-24
8 - 80
1 -1/2" F/NPT

Model F-451N Series With 1 - 1/2" F/NPT, PVC Adapters and Specially Equipped
Model Number
 GPM 
LPM
Adapter Size F/NPT
F-451006LHKN-24
0.5 - 6
-
1 -1/2" F/NPT
F-451001LHKN-24
1.0 - 10
  4 - 40
1 -1/2" F/NPT
F-451002LHKN-24
2.0 - 20
8 - 80
 1 -1/2" F/NPT 
F-451003LHKN-24
3.0 - 30
12 - 115
1 -1/2" F/NPT
F-451004LHKN-24
4.0 - 40
15 - 155
1 -1/2" F/NPT

Model F-451N Series Parts
Part Number
 Description 
F-45038N
Union Nut
F-45030N
Adapter, 1" F/NPT, Polysulfone
F-45047N
Adapter, 1" F/NPT, Brass
F-45039N
Adapter, 1" Sweat, Brass
F-45039N
Adapter, 1 -1/2" F/NPT
76000-967
O-Ring, Viton
2-136V
Wireholder, Top, for all F-451 models .5-6, 1-10, 2-20 GPM, 8-80 SCFM
F-45025
Wireholder 3 - 30, 4 - 40
F-45025-2
Float Stop, 0.5 - 6, 1 - 10, 2 - 20, 8 - 80 Viton
2-006V
Float, 0.5 - 6 GPM, Teflon
F-45032T
Float, 1 - 10 GPM, Stainless
F-45033
Float, 1 - 10 GPM, Teflon
F-45054T
Float, 2 - 20 GPM/8 -80 SCFM Stainless
F-45035
Float, 2 - 20 GPM, Hastelloy "C"
F-45035H
Float, 3 - 30 GPM, Stainless
F-45037
Float, 3 - 30 GPM, Hastelloy "C"
F-45036H
Float, 4 - 40 GPM, Stainless
F-45049
Float, 4 - 40 GPM, Hastelloy "C"
F-45050
Meterbody, .5 - 6 GPM
F-45023N-4
Meterbody, 1 - 10 GPM
F-45023N
Meterbody, 2 - 20 GPM
F-45023N-1
Meterbody, 3 - 30 GPM
F-45023N-2
Meterbody, 4 - 40 GPM
F-45023N-3
Meterbody, 8 - 80 SCFM
F-45023N-5
Meterbody, 3.8 - 38 LPM
F-45023N-L
Meterbody, 7.5 - 75 LPM
F-45023N-1L
Meterbody, 12 - 115 LPM
F-45023N-2L
Meterbody, 12 - 115 LPM
F-45023N-3L
Meterbody, 15 - 155 LPM  
F-45028
Guide Wire, .5 - 6, 1 - 10, 2 - 20, 8 - 80, Stainless
F-45028H
Guide Wire, .5 - 6, 1 - 10, 2 - 20, 8 - 80, Hastelloy "C"
F-45028-2
Guide Wire, 3 - 30, Stainless
F-45028H-2
Guide Wire, 3 - 30, Hastelloy "C"
F-45059H
Guide Wire, 4 - 40, Hastelloy "C"
F-45046
Wireholder, .5 - 6, 1 - 10, 2 - 20, 3 - 30, 8 - 80
F-45045
Wireholder, 4 - 40 GPM/15 - 155 LPM only
F-45032
Loc Nut, 1" PVC
F-45031
Elbow 90° 1" Polysulfone

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Last Updated: May 29, 2001