SP-45-2003 (R 2008)
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SP-45-2003 (R 2008)

Bypass and Drain Connections

This Standard Practice establishes requirements for connections to valves and fittings to accommodate drains and bypasses in all pressure classes.
Specific requirements are:
a) Standard symbols and locations of openings for drains and bypasses.
b) Standard size of drains and bypass openings.
c) Minimum thread lengths in drain and bypass tappings.
d) Minimum diameter and depth of socketweld connection for drain and bypass.
e) Butt-welding connection for drain and bypass.
f) Bosses for drain and bypass connection.
g) Method for designating outlets of reducing fittings.

     


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October 21, 2019

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