Nor-Cal Information:
Model Number:AIV-1502-NWB
Serial Number:311739

Link to the Datasheet:Nor-Cal AIV Series Manual Viton Seal Angle-In-Line Isolation Valve

Specifications:
Port O.D.:1.5"
Description:NW-25B
Materials:
  Body:Electropolished 304 stainless steel
  Bellows:Welded AM-350 stainless steel
  Bonnet Seal:Viton
  Poppet Seal:Viton
Actuation:Self-lubricating bronze nuts with ACME threads
Differential Pressure:Maximum 20 psia across valve seat
Maximum Temperature with Viton Seals:
  Sustained:< or = to 150°C
  Intermittent:< or = to 204°C
Vacuum Range:
  Viton Bonnet Seal:1 x 10-9Torr - High Vacuum