Key Number Endtype 0 Engagement 1 Buttweld 2 Flanged 3 Ferrule 4 Ferrule Hub 5 Simple Engagement 6 Specific Engagement 7 Dc 8 Cam & Groove Coupling 9 Tri-Clamp 10 I-Clamp A 11 I-Clamp B 12 Q-Clamp 13 H-Clamp 14 Socket 15 Threaded 16 Square End 17 Bull End 18 Socket Engagement 19 Threaded Engagement 20 Raised Face 21 Flat Face 22 Ring Joint 23 Extended 24 Tangent 25 Reducing 26 Hubbed 27 Compression Sleeve 28 Grooved Segmented Ring 29 Bell and Spigot 30 Mechanical Gland Type 31 Tyton 32 Mechanical Lock Type 33 Mechanical Push On Type 34 Mechanical Screw Gland Type 35 Ball And Socket 36 Universal Pipe 37 Brazed 38 Soldered 39 Hot Gas Welded 40 Solvent Cemented 41 Heat Fusion 42 Adhesive 43 Butt And Wrap 44 Electro Fusion 45 Straight Socket Adhesive 46 O_Ring_Bell_And_Spigot 47 Snap_Ring 48 Testable 49 Subaquaeous 50 Bonded 51 Harnessed Clamp 52 Ball 53 Deep 54 Extra Deep 55 None 56 Wafer