Maximum Misalignment .76mm
installation position of the housing should be accurately controlled to ensure
the proper alignment of the manifold and the Feed/Concentrate ports.
3.2.7. Install the vessel correctly: Make sure to align the Feed/Concentrate ports
and the manifold ports at a right distance. Please contact the supplier of
coupling to get the exact distance.
3.2.8. Connecting the vessel and the manifold: Since only one IPS coupling is used to
connect directly to the manifold precautions shall be taken to ensure
additional flexible space is provided for the connection of vessels and
manifolds by adding an extra IPS coupling to the manifold, as shown in figure
1.2.
Slight angle between manifolds and F/C ports using IPS standard clamp for
connection is acceptable. However, high accuracy in alignment is required.
Misalignment in any direction should be avoided and keep to a minimum as
much possible since it will generate mechanical stress concentrations that
will damage the membrane housing.
3.2.10. Verify the alignment: There is a maximum of 0.76mm misalignment
tolerance in any direction for all ports as shown in figure 1.3. Severe
misalignment could impair the life expectancy of the vessel. Excessive force
to tighten the couplings is an indication of misalignment. When properly
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