What is purpose of straightening vanes?

A straightening vane is used to straighten the gas flow before going into a gas meter to ensure accurate measurement. When installed upstream with the correct pipe length, it will reduce the turbulence before entering a metering devise such as an orifice flanges or flow meter.

What are straightening vanes?

Honeywell Gas Depot Straightening Vanes condition the gas flow to a normal pattern, enabling accurate measurement by the downstream turbine meter. They are fabricated from carbon steel in a variety of sizes for installation in either schedule 40 and 80 pipe and line or flanged type versions.

What is the importance of straight run of pump suction piping?

Keeping the pump suction piping short ensures that the inlet pressure drop is as low as possible. The straight run pipe gives you a uniform velocity across the pipe diameter at the pump inlet. Both are important to achieving optimal suction.

How do I increase pump suction?

One method for increasing the NPSHA is to increase the pressure at the suction of the pump. For example, if a pump is taking suction from an enclosed tank, either raising the level of the liquid in the tank or increasing the pressure in the space above the liquid increases suction pressure.

What does vertical straightening Vane in suction flange do?

Many pumps have a vertical straightening vane inside the suction flange to help straighten out the flow. HORIZONTAL PIPE RUNS – The figure below focuses primarily on the TEEs and elbows at right angles on the suction piping, increasing the straight run distance between the pump and fittings.

Why do you need straight run pump suction pipe?

Note: Obstructions include valves, elbows, “tees”, and etc. Keeping the pump suction piping short ensures that the inlet pressure drop is as low as possible. The straight run pipe gives you a uniform velocity across the pipe diameter at the pump inlet.

What causes a longer straight run in a suction line?

In some situations, the type and orientation valves and elbows in the pump suction line may affect the flow distribution to the impeller and necessitate a longer piping straight run length. Flow straighteners may also be utilized to reduce the piping straight run length.”

How big should pipe be between pump inlet and suction pipe?

PIPE DIAMETER ON SUCTION SIDE SHOULD BE EQUAL OR ONE SIZE LARGER THAN PUMP INLET Suction piping velocities should be limited to 7 to 8 feet per second or less. ELIMINATE ELBOWS MOUNTED ON OR CLOSE TO THE INLET NOZZLE OF THE PUMP Include 5 to 10 pipe diameters of straight run pipe between the pump inlet and elbow.