Instruments/Products
Sight Glass
◇Tank Wall Welding Type
 (Transparent): SG-1T
◇Flanged, Flow Type: SG-3F 
◇Flanged, w/Wiper Type:
  SG-8F
◇Tank Wall Welding Type
  (Reflex): SG-1R
◇Flanged, Flapper Type: SG-4F ◇Flanged, w/Cleaning Nozzle:
  SG-8S
◇Tank Wall Welding Type (Round): SG-2 ◇Flanged, Ball Float Type: SG-7F ◇Flanged, w/Jacket Type:
  SG-9F
◇Tank Wall Welding Type
  (Transparent, w/Valve): SG-V1T
◇Threaded, Flow type: SG-3S ◇By-Pass Type: SG-VP
◇Tank Wall Welding Type
  (Reflex, w/Valve): SG-V1R
◇Threaded, Flapper Type SG-4S ◇Flanged, Short-Pipe Type:
  SG-10F
◇Regular Type Peep Sight: SGP-A ◇Threaded, Ball Float Type: SG-7S ◇Safety Reinforced Type: SGA
◇Safety Peep Sight: SGP-S ◇Flanged, Lantern Type: SG-6F
 By-Pass Type: SG-VP
Application and Features
By-Pass Sight Glass is used at the time when especially import flow is required to observe or when surface of the glass is required to keep particularly clean and/or when the glass may be broken due to critical operating conditions. Sight Glass can be made maintenance or cleaning of the glass with no stopping flow of main pipe owing to the shut-off valves installed at both sides of sight glass on the by-pass piping.
The glass is usually free from pressure since the valves are shut except the time of fluid observation.
Standard Specification
  Material: SS400, S25C, SUS, Alloys
Please consult with us for material which we design according to the purpose and condition of its use.