Unit of Measure
Flow Direction |
N/A Metal Orifice Assemblies can be used for flow in either direction. The Air Flow and Water Flow data is for a flow direction as shown in the product images. |
Material |
N/A Brass |
Nominal Orifice Size |
N/A 4 |
CV |
N/A 0.00035 |
Orifice Geometry |
N/A Round |
Maximum Operating Pressure |
N/A 2000 psig |
Connection A |
N/A 1/8" NPT Male |
Connection B |
N/A 1/8" NPT Male |
Screened |
N/A None |
|
N/A
|
|
N/A
|
Air Flow Notes |
N/A
Standard Conditions 70°F, 14.7 psia
SCFH – Standard Cu. Ft. Per Hour SLPM – Standard Liters Per Minute The Metal Orifice Air Flow data obtained with Type B restrictor. Flow rates for other metal restrictors are essentially the same as for Type B. The Metal Orifice Air Flow data supercedes previous publications. |
Water Flow Notes |
N/A The Metal Orifice Water Flow data calculated based on the Cv for each orifice. Flow = Cv √ΔP. ΔP = differential pressure in psid. It is assumed that the region on either side of the orifice is fully flooded with no air pockets. |
Orifice Diameter |
N/A 0.0039 in |
Width Across Flats (Hex) |
N/A 7/16 in |
Total Length |
N/A 0.970 in |
Air Flow at Pressure - Standard Cu. Ft. Per Hour (SCFH) |
N/A 1 psig: 0.1981 5 psig: 0.18 10 psig: 0.25 15 psig: 0.30 20 psig: 0.40 25 psig: 0.47 30 psig: 0.53 40 psig: 0.64 50 psig: 0.76 60 psig: 0.89 70 psig: 1.02 80 psig: 1.14 90 psig: 1.27 100 psig: 1.40 |
Air Flow at Vacuum - Standard Cu. Ft. Per Hour (SCFH) |
N/A 5 In. Hg.: 0.113 10 In. Hg.: 0.145 |
Air Flow at Vacuum, Choked Flow - Standard Cu. Ft. Per Hour (SCFH) |
N/A 15 In. Hg.: 0.158 20 In. Hg.: 0.158 30 In. Hg.: 0.158 |
Air Flow at Pressure - Standard Liters Per Minute (SLPM) |
N/A 1 psig (6.9 kPag): 0.035 5 psig (34.5 kPag): 0.09 10 psig (69.0 kPag): 0.12 15 psig (103.4 kPag): 0.16 20 psig (137.9 kPag): 0.19 25 psig (172.4 kPag): 0.22 30 psig (206.9 kPag): 0.25 40 psig (275.8 kPag): 0.30 50 psig (344.8 kPag): 0.36 60 psig (413.7 kPag): 0.42 70 psig (482.7 kPag): 0.48 80 psig (551.6 kPag): 0.54 90 psig (620.6 kPag): 0.60 100 psig (689.5 kPag): 0.66 |
Air Flow at Vacuum - Standard Liters Per Minute (SLPM) |
N/A 5 In. Hg. (127 Mm. Hg.): 0.053 10 In. Hg. (254 Mm. Hg.): 0.069 |
Air Flow at Vacuum, Choked Flow - Standard Liters Per Minute (SCFH) |
N/A 15 In. Hg. (381 Mm. Hg.): 0.075 20 In. Hg. (508 Mm. Hg.): 0.075 30 In. Hg. (762 Mm. Hg.): 0.075 |
Water Flow - Gallons/minute (GPM) |
N/A 1 psig: 0.00035 2 psig: 0.00049 3 psig: 0.00061 4 psig: 0.00070 5 psig: 0.00078 6 psig: 0.00086 7 psig: 0.00093 8 psig: 0.00099 9 psig: 0.00105 10 psig: 0.00111 15 psig: 0.00136 20 psig: 0.00157 30 psig: 0.00192 40 psig: 0.00221 50 psig: 0.00247 60 psig: 0.00271 70 psig: 0.00293 80 psig: 0.00313 90 psig: 0.00332 100 psig: 0.00350 |
Water Flow - Liters/minute (LPM) |
N/A 1 psig (6.9 kPag): 0.0013 2 psig (13.8 kPag): 0.0019 3 psig (20.7 kPag): 0.0023 4 psig (27.6 kPag): 0.0026 5 psig (34.5 kPag): 0.0030 6 psig (41.4 kPag): 0.0030 7 psig (48.3 kPag): 0.0035 8 psig (55.2 kPag): 0.0037 9 psig (62.1 kPag): 0.0040 10 psig (69 kPag): 0.0042 15 psig (103.4 kPag): 0.0051 20 psig (137.9 kPag): 0.0059 30 psig (206.9 kPag): 0.0073 40 psig (275.8 kPag): 0.0084 50 psig (344.8 kPag): 0.0094 60 psig (413.7 kPag): 0.0103 70 psig (482.7 kPag): 0.0111 80 psig (551.6 kPag): 0.0119 90 psig (620.6 kPag): 0.0126 100 psig (689.5 kPag): 0.0132 |
Flow Data Status |
N/A Specific |
