Short description
This Standard Practice establishes requirements for connections to valves and fittings to accommodate drains and bypasses in all pressure classes. Specific requirements contained in this Standard Practice include: a) Standard symbols and locations of openings for drains and bypasses; b) Standard sizes of drain and bypass openings; c) Minimum pipe thread lengths in drain and bypass tapping's; d) Minimum diameter and depth of socketweld connection for drains and bypasses; e) Butt-welding connections for drains and bypasses; f) Bosses for drain and bypass connections; g) Method for designating outlets of reducing fittings.