1/4˝ NPT PRESSURE FITTING
®
SERIES OP, PE & TE
ORIFICE PLATE FLOWMETERS
FLOW
PVC or PTFE, Liquid and Gas Use Options
OP
E
O
D
I
V
O
N
L
I
N
PE
TE
TE
1/8 [3.18]
TYPICAL
BODY
[CARRIER RING]
HI
A
PRESSURE
OD
4-1/2
[114.3]
LOW
A
PRESSURE
INCLUDES RING GASKET
ID
FLOW
1-1/4
[31.75]
Flowmeters,
The Series OP Orice Plate Flowmeters are a complete ow metering package.
They incorporate a stainless steel orice plate with a unique holder or carrier ring
containing metering taps and integral gaskets. The Series OP is available in line sizes
from 1/2˝ to 24˝ and can be used with compatible liquids and gases.
FEATURES/BENEFITS
• Mounted with standard anges with no need of specialty anges
• Reduced installation costs with simple installation by slipping the unit between
standard anges
• Easy access with corner type metering taps
• Long operation life with corrosion free material
• Stainless steel wetted parts assures long term reliability and accuracy
• Proven through a wide range of applications for energy efciency
APPLICATIONS
• Fluid ow rates in building water lines
• Boiler feedwater
• Cooling water
• Combustion or compressed air
Orice Plate
• Steam ow
The SERIES PE & TE Orice Plate Flowmeters are two series of plastic orice plate
ow metering packages incorporating a unique holder or carrier ring containing
metering taps and integral gaskets. They can be used in place of other primary
differential products for efciency and cost effectiveness.
The Series PE orice plate owmeter is of PVC construction and is available in line
sizes from 1/2 to 24˝. This series can be used for air and most gases and meets or
exceeds ASME, AGA & ISO standards.
The Series TE orice plate owmeter is of PTFE construction and is available in line
sizes from 1/2 to 24˝. This Series can be used with gases, liquids, corrosive and high
temperature uids.
FEATURES/BENEFITS
• Mounted with standard anges with no need of specialty anges
• Reduced installation costs with simple installation by slipping the unit between
standard anges
• Easy access with corner type metering taps
• Long operation life with corrosion free material
• Proven through a wide range of applications for energy efciency
• PTFE construction yields excellent chemical and weather resistance
• TE models are ame retardant without factory gaskets
• Low friction leading to minimum wear and long operation life
APPLICATIONS
• Fluid ow rates in building water lines
• Boiler feedwater
• Cooling water
• Combustion or compressed air
• Steam ow
SPECIFICATIONS
Service: OP & TE: Compatible liquids and gases; PE: Clean air and compatible
gases.
Wetted Material: OP: 304 SS, Buna-N gaskets; PE: Gray PVC, Buna-N gaskets;
TE: PTFE, Buna-N gaskets.
Accuracy: 0.6% FS. (Beta = .2-.6) ±0.7% for Beta greater than .6.
Temperature Limits: OP: -50 to 200°F (-45 to 93°C); PE: 140°F (60°C) max; TE:
-40 to 200°F (-40 to 93.3°C).
Pressure Limits: OP: Limited only by pipe and ange rating restrictions.
Head Loss: 1-Beta ratio2 eg: 1-0.72 = 1-0.49 = 51% of the d.p.
Line Sizes: 1/2˝ to 24˝.
Process Connection: 1/4˝ female NPT.
Installation: Standard ange. OP: Any rating (orice anges not required); PE &
TE: 125#/150# rating.
Pipe Requirements: General requirements 10 diameter upstream and 5 diameter
downstream of orice plate.
Weight: Varies with line size. See chart.
DWYER INSTRUMENTS, INC. 264
®
SERIES OP, PE & TE
ORIFICE PLATE FLOWMETERS
PVC or PTFE, Liquid and Gas use Options
FLOW
SERIES OP ORIFICE PLATE FLOWMETER –
CAPACITY STRUCTURE
• Material 304/304 L, gaskets Buna-N
• Based on 70°F, 14.7 psia (base conditions)
• Beta value based on std sch pipe I.D.
• 1.25˝ overall thickness
• Orice plate thickness is 0.125˝
MODEL CHART
OP
OP
Weight
Model
(lb)PEModel
OP-A-1
1.00
OP-A-2
1.00
OP-A-3
1.00
OP-B-1
1.00
OP-B-2
1.00
OP-B-3
1.00
OP-C-1
2.00
OP-C-2
2.00
OP-C-3
2.00
OP-D-1
2.00
OP-D-2
2.00
OP-D-3
2.00
OP-E-1
2.00
OP-E-2
2.00
OP-E-3
2.00
OP-F-1
3.00
OP-F-2
3.00
OP-F-3
3.00
OP-G-1
4.00
OP-G-2
4.00
OP-G-3
4.00
OP-H-1
5.00
OP-H-2
5.00
OP-H-3
5.00
OP-J-1
7.00
OP-J-2
7.00
OP-J-3
7.00
OP-K-1
8.00
OP-K-2
8.00
OP-K-3
8.00
OP-L-1
10.00
OP-L-2
10.00
OP-L-3
10.00
OP-M-1
14.00
OP-M-2
14.00
OP-M-3
14.00
OP-N-1
20.00
OP-N-2
20.00
OP-N-3
20.00
OP-O-1
30.00
OP-O-2
30.00
OP-O-3
30.00
OP-P-1
40.00
OP-P-2
40.00
OP-P-3
40.00
OP-Q-1
48.00
OP-Q-2
48.00
OP-Q-3
48.00
Note: Differential pressure values should be less than 50% of the inlet absolute pressure.
PE-A-1
PE-A-2
PE-A-3
PE-B-1
PE-B-2
PE-B-3
PE-C-1
PE-C-2
PE-C-3
PE-D-1
PE-D-2
PE-D-3
PE-E-1
PE-E-2
PE-E-3
PE-F-1
PE-F-2
PE-F-3
PE-G-1
PE-G-2
PE-G-3
PE-H-1
PE-H-2
PE-H-3
PE-J-1
PE-J-2
PE-J-3
PE-K-1
PE-K-2
PE-K-3
PE-L-1
PE-L-2
PE-L-3
PE-M-1
PE-M-2
PE-M-3
PE-N-1
PE-N-2
PE-N-3
PE-O-1
PE-O-2
PE-O-3
PE-P-1
PE-P-2
PE-P-3
PE-Q-1
PE-Q-2
PE-Q-3
PE
Weight
(lb)TEModel
1.00
TE-A-1
1.00
TE-A-2
1.00
TE-A-3
1.00
TE-B-1
1.00
TE-B-2
1.00
TE-B-3
1.00
TE-C-1
1.00
TE-C-2
1.00
TE-C-3
1.00
TE-D-1
1.00
TE-D-2
1.00
TE-D-3
2.00
TE-E-1
2.00
TE-E-2
2.00
TE-E-3
2.00
TE-F-1
2.00
TE-F-2
2.00
TE-F-3
2.00
TE-G-1
2.00
TE-G-2
2.00
TE-G-3
2.00
TE-H-1
2.00
TE-H-2
2.00
TE-H-3
3.00
TE-J-1
3.00
TE-J-2
3.00
TE-J-3
3.00
TE-K-1
3.00
TE-K-2
3.00
TE-K-3
4.00
TE-L-1
4.00
TE-L-2
4.00
TE-L-3
5.00
TE-M-1
5.00
TE-M-2
5.00
TE-M-3
6.00
TE-N-1
6.00
TE-N-2
6.00
TE-N-3
7.00
TE-O-1
7.00
TE-O-2
7.00
TE-O-3
9.00
TE-P-1
9.00
TE-P-2
9.00
TE-P-3
10.00
TE-Q-1
10.00
TE-Q-2
10.00
TE-Q-3
TE
Weight
(lb)
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
2.00
3.00
3.00
3.00
4.00
4.00
4.00
4.00
4.00
4.00
6.00
6.00
6.00
8.00
8.00
8.00
10.00
10.00
10.00
15.00
15.00
15.00
18.00
18.00
18.00
SERIES PE ORIFICE PLATE FLOWMETER –
AIR CAPACITY STRUCTURE
• Material PVC, gaskets Buna-N
• Based on 70°F, 14.7 psia (base conditions)
• Beta value based on std sch pipe I.D.
• 1.25˝ overall thickness
• Orice plate thickness is 0.125˝
Water Capacity Air Capacity - Flow in SCFM
Line
Size Bore Beta
1/2˝
0.200˝
1/2˝
0.310˝
1/2˝
0.430˝
3/4˝
0.250˝
3/4˝
0.400˝
3/4˝
0.580˝
1˝
0.300˝
1˝
0.520˝
1˝
0.720˝
1.25˝
0.400˝
1.25˝
0.700˝
1.25˝
1.00˝
1.5˝
0.500˝
1.5˝
0.800˝
1.5˝
1.100˝
2˝
0.600˝
2˝
1.000˝
2˝
1.450˝
2.5˝
0.750˝
2.5˝
1.250˝
2.5˝
1.750˝
3˝
0.920˝
3˝
1.500˝
3˝
2.150˝
4˝
1.200˝
4˝
2.000˝
4˝
2.800˝
5˝
1.500˝
5˝
2.500˝
3.500˝
5˝
1.800˝
6˝
3.000˝
6˝
4.200˝
6˝
2.400˝
8˝
4.000˝
8˝
5.600˝
8˝
3.000˝
10˝
5.000˝
10˝
7.000˝
10˝
3.600˝
12˝
6.000˝
12˝
8.400˝
12˝
4.000˝
14˝
6.600˝
14˝
9.300˝
14˝
4.500˝
16˝
7.600˝
16˝
10.700˝
16˝
0.32
0.50
0.69
0.30
0.49
0.70
0.29
0.49
0.69
0.29
0.51
0.72
0.31
0.50
0.68
0.29
0.48
0.70
0.30
0.50
0.70
0.30
0.49
0.70
0.30
0.50
0.70
0.30
0.50
0.69
0.30
0.49
0.69
0.30
0.50
0.70
0.30
0.50
0.70
0.30
0.50
0.70
0.30
0.50
0.70
0.30
0.50
0.70
in d.p.
w.c.
20
100
320
20
100
320
20
100
320
20
100
320
20
100
320
20
100
320
20
100
320
20
100
320
20
100
320
20
100
320
20
100
320
20
100
320
20
100
320
20
100
320
20
100
320
20
100
320
Flow in
GPM
0.62
3.44
13.00
0.97
5.69
23.82
1.38
9.63
36.15
2.46
17.48
71.77
3.85
22.73
83.95
5.52
35.34
147.74
8.63
55.54
216.30
12.97
79.94
324.16
22.03
141.51
547.1
34.39
220.80
853.09
49.46
317.74
1226.98
87.95
565.77
2195.86
137.35
883.04
3421.26
197.73
1271.62
4930.86
244.14
1537.49
6052.57
308.76
2038.95
8007.74
1
in d.p.
w.c.
20
100
200
20
100
200
20
100
200
20
100
200
20
100
200
20
100
200
20
100
200
20
100
200
20
100
200
20
100
200
20
100
200
20
100
200
20
100
200
20
100
200
20
100
200
20
100
200
at 14.7
psia
(0 psig)
2.35
12.21
32.77
3.65
20.21
59.92
5.24
34.2
91.28
9.31
62.09
180
14.57
80.82
212.18
20.92
125.74
372.09
32.71
197.54
543.99
49.17
282.9
816.7
83.58
503.76
1380.03
130.48
786.23
2152.83
187.86
1331.63
3097.20
333.87
2014.95
5532.00
521.58
3145.50
8626.42
750.9
4530
12430.00
927.14
6477.67
15251.50
1172.63
7264.58
20179.85
SERIES TE ORIFICE PLATE FLOWMETER –
CAPACITY STRUCTURE
• Material PTFE, gaskets Buna-N
• Based on 70°F, 14.7 psia (base conditions)
• Beta value based on std sch pipe I.D.
• 1.25˝ overall thickness
• Orice plate thickness is 0.250˝
at 20
psig
3.63
19.58
56.15
5.66
32.44
102.91
8.11
54.92
156.51
14.41
99.75
309.97
22.55
129.68
363.93
32.38
202.03
639.87
50.64
317.58
936.56
76.13
454.77
1404.95
129.44
810.06
2373.02
202.11
1264.42
3701.57
291
1820.05
5325.20
517.25
3241.45
9525.43
808
5060.38
14846.80
1163.44
7288.16
21397.00
1436.59
8812.87
28262.66
1817.05
11688.26
34749.32
at 100
psig
6.61
36.37
107.47
10.3
60.26
197.2
14.8
102.09
300
26.3
185.5
595.2
41.16
241.5
697.39
59.13
375.8
1227.63
92.48
590.91
1798.86
139.06
846.21
2696.28
236.48
1507.64
4553.68
369.29
2353.51
7103.22
531.75
3387.93
10219.28
945.28
6034.85
18290.00
1476.77
9421.74
28506.17
2126.47
13570.33
41089.02
2625.81
16409.42
50427.78
3321.32
21764.08
66737.64
Flowmeters,
Orice Plate
DWYER INSTRUMENTS, INC.
265