Orifice Plates/ Orifice Assembles
The orifice plate is a metal disc with concentric/eccentric hole, which is inserted into the pipe containing fluid flow. Providing a simple means of pressure drop, orifice plate family contains a range of products that is adaptable to almost any process condition and requirement. Restriction caused by orifice plates induces pressure drop and with Bernoulli’s principle, flow rate of the fluid (whether gas or liquid) is measured.
According to standards like ISO5167, pressure tapping pairs which sense upper and lower pressure, can be applied in multiple configurations. Orifice plates are adequate to cope with steam, gaseous and liquid flows under certain considerations.
Orifice plates offer advantageous flow measurement with characteristics including:
ü Inherently Simple in Operation
ü Effective Flow Rate Measurement for a Wide Variety of Fluids
ü No Moving Part Involved
ü Low-Cost Flow Measurement
ERATECH team provides a full range of orifice plates and orifice assembles designed to tailor customer’s needs and requirements. All types of mentioned plates with corresponding material and configuration is manufactured in our factory based in Klang, Malaysia.
Square Edge (Standard) Bore
- Clean and Low-Viscosity Liquids
- Dry and One-Phase Steams
Quadrant Edge Bore
- Low Density Gases
- High Viscosity and/or Low Velocity Liquids
Eccentric Bore
- Low Viscosity Liquids with Suspended Solids
- Low Viscosity Liquids Carrying Entrained Gases
Segmental Bore
- Gas/liquid Flow with Entrained Solids
RTJ Type
- Clean Liquids and Gases
- Low Velocity Steam Flows
- High Temperature and Pressure Liquids and Gases
Square Edge (Standard) Bore
- Clean and Low-Viscosity Liquids
- Dry and One-Phase Steams
Quadrant Edge Bore
- Low Density Gases
- High Viscosity and/or Low Velocity Liquids
Eccentric Bore
- Low Viscosity Liquids with Suspended Solids
- Low Viscosity Liquids Carrying Entrained Gases
Segmental Bore
- Gas/liquid Flow with Entrained Solids
RTJ Type
- Clean Liquids and Gases
- Low Velocity Steam Flows
- High Temperature and Pressure Liquids and Gases
Flange Ratings
JIS 10, 16, 20, 30, 40, 63
ANSI Class 150, 300, 600 and 900, 1500, 2500
Plate Thickness
3, 6, 9, 12 mm
Plate Material
Per ASME Recommendations
Non-Standard: Hastelloy B/C, Monel, Titanium and etc.
Flow Calculation Standards
ISO 5167
AGA report #3
ASME MFC-3M (R.W Miller)
Pressure Taps
Flange Taps
Corner Taps
D and ½ D (Radius) Taps
Pipe Taps
Vena Contract Taps
Tab Handle
Integral with Orifice Plate
Welded to Orifice Plate
Drain and Vent Hole
Standard: 304SS, 316LSS
Not drilled for orifice bores smaller than 25.4mm
Nominal Pipe Size
2” to 24”
Markings
Upstream Side of Tap Handle Stamped “UPSTREAM” and with Bore Type and Size, Line Size, Tag Number