PLSteel Pipe FlangesPlate Flange (PL)
Flat-type flange with simple structure, light weight and low cost — ideal for low-pressure pipeline systems.
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Orifice Plate (OP)
Differential pressure flow element — precision-bored restriction for liquid, gas and steam metering.
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OPSteel Pipe Flanges
Overview
Orifice Plate (OP) is a key differential pressure flow element used with orifice flanges to measure flow rate of liquid, gas and steam. The precision-bored hole creates a calibrated restriction; upstream and downstream pressure difference is measured to calculate flow per Bernoulli's principle.
Size Range
1" – 24"
Pressure Class
Per paired flange rating
Key Features
- Precision-bored metering orifice
- Concentric, eccentric and segmental types
- Used with orifice flange pairs (OF)
- Multiple material grades for corrosive service
- Conforms to ISO 5167 / ASME MFC-3M
Benefits
- Simple, proven flow measurement technology
- Low maintenance vs many flow meter types
- Wide range of materials for harsh media
Specifications
| Standards | ISO 5167, ASME MFC-3M, API 14.3 |
| Installation | Between orifice flange pair (OF) |
| Beta Ratio | Per engineering calculation |
| Materials | A105, 304/316, F11, F22, 15CrMo, special alloys |
| Medium | Liquid, gas and steam |
Applications
Custody transfer flow meteringProcess plant flow controlSteam and condensate measurementWater treatment flow monitoring
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Standards
- • ISO 5167
- • ASME MFC-3M
- • API 14.3
- • ASME B16.36
Materials
- • Carbon Steel: A105, 20#, Q235B, A234 WPB
- • Stainless Steel: 304, 304L, 316, 316L, 321
- • Alloy Steel: 16Mn, F11, F22, 15CrMo
- • Duplex & Super Duplex: F51, F53, 2205
- • Special alloys: Monel, Hastelloy, Titanium (on request)
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