Spec 17D 5M working pressure flanges have BX ring grooves, these
flanges appear similar to, but will not connect with,
API Spec 6A
5M working pressure flanges.
API Spec 17D
requires all pressure containing end and outlet connections that utilize metal
to metal sealing surfaces have their ring grooves or other sealing surfaces made
from, or inlaid with,
Corrosion Resistant Material.
Use ring gaskets
or other metallic seals made of corrosion resistant material with API Spec 17D
specified connections. Use SBX and
SRX ring gaskets for underwater (subsea)
Make-up of any API end or outlet
connections utilizing API ring gaskets.
standard (fixed) flanges with swivel flanges (SS to SV) require special length
bolts and tap end studs.
All API Spec 17D
equipment quality control and testing shall comply with requirements for PSL 2, 3,
or 3G described in API Spec 6A and as specified
by the buyer of the equipment.
For more about API 17D SS and SV
Flanges, Click Here.
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