Question
What are types of taps used for orifices ?
Answers
1. FLANGE TAPS :
This are most commonly used on pipe sizes of 2 inches or larger. They are located in the orifice flange 2 inch from upstream and 1 inch downstream from the faces 0 orifice plate.

2. CORNER TAPS :
On pipe sizes less than 2 inches cornor taps located directaly at the face of the orifice plate.

3. VENA CONTRACTA AND REDIUS TAE :
Vena contracta taps located at 1 pipe diameter upstrean and at point of minimum pressure downstream. There are mostly widely used for measurement of steam.
Redius taps are located 1 pipe diameter upstream and 1/2 pipe diameter downstream for the inlet face of the orificeare a close approximation to vena contracta taps upto 0.72 d / D.

4. FACE FLOW TAPS :
Face flow taps are located at 2 1/2 pipe diameter upstream and B pipe diameter downstream. Full flow taps at 2 1/2 and B pipe diameter have the same advantage as vena contracta or radius taps.   Your Comment




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