Butterfly Valves

Triple Offset

Leading TOV Design

The DelVal TriO provides industry leading bi-directional bubble tight shut-off, API 598 and ISO 5208. 

Belleville springs ensure continuous compression of the adjustable graphite packing on the high surface finish of the stem to provide low fugitive emissions, ISO 15848

  • NACE MR0175 / ISO 15156-1 is standard
  • One-piece blow-out proof shaft with heavy duty bearing and reinforced bearing protectors provide reliable, safe service
  • No seat/disc contact after the first few degrees of opening make this triple offset ideal for control applications
  • 100% Testing, 100% Serialization, 3 Year Warranty
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Available In

  • 3” to 80”; ANSI Cl.150, 300, 600; Wafer, LUG, Double Flanged Short Pattern, Gate Face to Face Long Pattern/Butt Weld; -196/-320F to 700C/1290F; Cryogenic, High Temperature, Steam Jacketed
  • A216WCB, A216WCC, A352LCC, A351CF8M, A351CF3M
  • Seal Ring: DuplexS31803+Graphite, Nitronic 50 XM-19+Graphite, 17-4PH hard faced, Nitronic 50 XM-19 hard faced
  • Body seat is Stellite Gr.21
  • NACE MR0175 / ISO 15156-1

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