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BALL VALVE Design (Illustrative only) Item No. BAV 101S Pressure rating class 800 Face SW ConstructionBody Three pieces Type Full Bore Floating Ball Extended stem No Wrench operated Yes Gear operated No Fire safe Yes Nominal size 1/2" - 1 1/2" MaterialsBody A 350 Gr. LF2 Ball AISI 316 Body seat ring PTFE Stem packing PTFE Graphite Stem 13 Cr.
From top to bottom: The connection type is socket weld (SW); the valve body is a three-body through-bore ball valve; there is no protruding stem. The seat is the valve seat, and its sealing ring is made of PTFE; the packing is also composed of PTFE and graphite
How to understand Floating Ball
Body valve body: Three-piece Type Full Bore Floating Ball three-piece full-bore floating ball valve； Extended stem – Extended type valve stem; Stem packing – Valve stem packing
What is the full name of SW?
For 5# qhqsl socket welding, it is recommended that the original poster search more on Baidu or Google; generally, the answers can be found there.