The CPA Type D is designed for installation into an application that uses ring type joint gaskets. The Type D flow conditioner is manufactured to match the pressure rating for the flanges and gaskets. There are two additional sub-types of Type D flow conditioner, the RTJ female (RTJF) and RTJ male (RTJM). In an RTJF configuration, installation of the flow conditioner involves placing the flow conditioner between two ring type joint flanges and matching ring gaskets.
In an RTJM configuration, the gaskets are integrated into the flow conditioner, so no additional gaskets are required and the space between flanges is reduced. Since the gaskets are designed to deform during installation, the flow conditioner should not be reused if the flanges are opened.
On an RTJF, we recommend that the flush face be positioned against the downstream flange of the meter tube. For an RTJM, the flow conditioner should be inserted into the downstream meter tube. This positioning ensures that the flow conditioner is centered relative to the flow meter and properly isolates the upstream meter tube.
On a CPA 50E, the geometry is bi-directional and the flow conditioner can be installed backwards if necessary without any change in flow meter performance. The CPA 55E and 65E on the other hand do have a preferred direction. They are designed to be installed with the stepped side facing upstream for maximum performance.
All CPA Female Ring Type Joint flow conditioners are designed and manufactured in compliance with the requirements of ASME B31.3, ASME B16.5, and ASME B16.48. Compliance to these standards ensure that the RTJF can withstand the forces generated by bolting the flanges together. When an RTJF is clamped into a flange, the forces work to push the groove surfaces apart. The ability of the RTJF to withstand these forces are directly related to the thickness of the part. A thick enough part ensures that the material does not fail under these conditions.
If the RTJF is made too thin, there will not be enough material to resist the forces, and the whole part is at risk of failure.
For installation convenience, the CPA Type D flow conditioner has a top dead center marker engraved on the outer circumference of the flange. This engraved arrow is aligned with the 90-degree axis of the flow conditioner and is provided to help with flow conditioner orientation when using Ultrasonic flow meters. CPA flow conditioner orientation is not applicable to measurement performance when using other flow meter types.
For further information, do not hesitate to contact our experienced sales representatives, who will be able to help you choose the correct product for your specific needs.