WIKA FLC-OP Orifice Plate
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SKU
FLC-OP
Primary flow elements for use with liquids, gases, and steam. For nominal pipe sizes 2" or larger. Available in square edge, quarter circle/conical entrance, eccentric entrance, and segmental designs with raised face, flat face, or ring-type joint sealing faces. Stainless steel material standard, others available as needed.
Because of their easy installation and management, orifice plates are the most common primary flow elements installed with differential pressure flow meters. Typically used in power generation, oil production and refining, gas processing and transmission, chemical and petrochemical processing, and water treatement and distribution.
- For clean, viscous, dirty, or corrosive liquids, clean or dirty gases, and steam
- Available in stainless steel (standard) Hastelloy C276, Monel 400, duplex, or super duplex
- Nominal sizes greater than 2" for square edge or quarter/circle, greater than 4" for eccentric or segmental orifice plates
- Pressure ratings per customer requirements, limited by material and flange
- Available with raised face, flat face, or ring-type joint sealing faces and drain or vent hole
| Orifice Plate Design | Square Edge | Quarter Circle/Conical Entrance | Segmental | Eccentric Entrance |
| Application | For general applications in clean liquids and gases | For measuring liquids with low Reynolds numbers | For measurements wiht two-phase, dirty, and particle-laden media | For measurements wiht two-phase, dirty, and particle-laden media in small pipe diameters |
| Design | Per ISO 5167-2 | Per ISO/TR 15377 | Per ISO/ASME | Per ISO/TR 15377 |
| Nominal Size | ≥2" (50 mm) | ≥2" (50 mm) | ≥4" (100 mm) | ≥4" (100mm) |
| Beta Ratio | 0.20 to 0.75 | 0.245 to 0.60 (quarter circle) 0.10 to 0.316 (conical) |
0.35 to 0.80 | 0.46 to 0.84 |
| Accuracy (Full Scale Flow Rate) |
≤±0.5% |
≤±2% | ≤±1% to 2% | ≤±2% for Beta ratio ≥0.316 ≤±2.5% for Beta ratio <0.316 |
| Repeatability |
0.1% flow rate |
0.1% flow rate | 0.1% flow rate | 0.1% flow rate |
| Wetted Materials | Stainless steel (standard) |
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