M588-08-880 Issue D
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Inlet spool
2.5 Fit customer (ANSI) inlet pipeline to ISO - ANSI inlet spool
1. Ensure that the inlet pipeline has the correct flange and that both mating flange faces are clean and
undamaged.
2. Ensure that the ANSI gasket is placed on the raised face of the flange and that the bolt holes are correctly
aligned. Do not re-use old gaskets.
3. Using suitable screws, nuts and washers, assemble the inlet pipeline to the inlet spool by bringing the flanges
together slowly and keeping the faces parallel.
4. The screws should be tightened in a diagonal pattern in four passes to the target torque values shown in
Ta bl e 2 3.
2.6 Fit customer (ISO) inlet pipeline to ISO - ISO inlet spool
1. Ensure the flange on the inlet pipeline is compatible with the ISO flange on the inlet spool. If the inlet pipeline
has a fixed collar flange it can be secured with a rotatable flange or half claw clamps. If the inlet pipeline has a
fixed bolted flange then suitable bolts, nuts and washers will be required.
2. Ensure all flange surfaces are clean and undamaged and that the ISO trapped O-ring is correctly installed in the
inlet flange of the spool.
3. Position the inlet pipeline flange onto the inlet spool flange ensuring the bolt holes are aligned.
4. Using suitable screws, nuts and washers securely fix the inlet pipeline to the inlet spool.
5. The screws should be tightened in a diagonal pattern in four passes to the target torque values shown in
Ta bl e 2 4.
2.7 Fit customer (ISO) inlet pipeline to dry pump
The ISO inlet pipeline can be attached directly to the inlet flange of the pump using the method described in
Section 3.3 of the GXS Dry Pumping Systems Instruction Manual - M588-00-880.
Table 23 - Flange torque for ANSI inlet piping flanges
Flange size Torque
ANSI 4 inch 150 Nm for 8 x M16 stainless steel fasteners
ANSI 6 inch 290 Nm for 8 x M20 stainless steel fasteners
ANSI 8 inch 290 Nm for 8 x M20 stainless steel fasteners
Table 24 - Flange torque for ISO inlet piping flanges
Flange size Torque
ISO63 17 Nm for 4 x M8 stainless steel fasteners
ISO100 17 Nm for 8 x M8 stainless steel fasteners
ISO160 34 Nm for 8 x M10 stainless steel fasteners
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