Metaglas® Sight Glass Windows
A borosilicate sight glass fused to a metal ring. A unique combination of glass and metal places the glass in compression, creating an amazingly strong and reliable sight glass. Metaglas® is the No. 1 selling sight glass, installed in more locations around the world. Clamp-style, bolt-on, weld-on, and threaded models available.
MetaClamp® Sanitary Sight Glass Window
The strongest, safest, most reliable sight glass.
Mounting: Sanitary clamp connection
Glass: Borosilicate to DIN7080
Metal: Duplex or Hastelloy
Up to 572° F.
FV to 230 psi
Approvals: USP Class VI, BPE Compliant, USP Type I borosilicate glass
Sizes: 1/2 to 12 inches
Asceptic Sight Glass Window
Design eliminates ferrule dead lag.
Mounting: NA ConnectTM or TCI BoltConnect®
Glass: Borosilicate to DIN7080
Metal: Stainless Steel or Hastelloy
Up to 572° F.
Up to 100 psi
Ratings and approvals: USP Class VI, BPE Compliant, USP Type I borosilicate glass
Sizes: ½ to 6 inches
Fused Sight Glass Assembly for Glass Lined Reactors
Mounting: Flanges for glass lined reactors
Glass: Soda lime
Metal: Glass lined
-60 to 250° F.
Designed for flange pressure class
Approval: TÜV
Sizes: 2 to 8 inches
Sanitary Hinged Sight Glass Assembly
Mounting: Sanitary ferrule
Glass: Borosilicate to DIN7080
Metal: Stainless steel or Hastelloy
Up to 572° F.
Up to 150 psi
Ratings and approvals: USP Class VI, BPE Compliant, USP Type I borosilicate glass
Sizes: 4 to 12 inches
Hinged Sight Glass Assembly with Metaglas®, Weld-On or Bolt-On
Mounting: Weld-on or bolt-on (ANSI Class 150#)
Glass: Borosilicate to DIN7080
Metal: Carbon or stainless steel
Up to 572° F.
Up to 150 psi
Ratings and approvals: PED, DIN7079, TÜV
Sizes: 3 to 8 inches
Metaglas, Bolt-on Sight Glasses to ANSI B16.5 Type 13
Sight glass window designed for full-face connection to an ANSI flange.
Sizes: 1-1/2 to 8 inches
Mounting: ANSI or DIN Flange
Glass: Borosilicate
Metal: Carbon, stainless steel or Hastelloy
Up to 572° F
Pressure per flange class
Ratings and approvals: PED, DIN7079, TÜV
Industrial Threaded Sight Glass Window, Metaglas®
Mounting: Male NPT Connection
Sizes: 1/4 – 3 inches
Glass: Borosilicate to DIN7080
Metal: Stainless steel or Hastelloy
Up to 572° F.
1/4 – 2 inches 100 bar, 1450 psi
3 inches – 50 bar, 725 psi
Metaglas® Sight Glass Disc, Type 73
Sight glass disc for DIN28120 and other weld-type sight glass assemblies.
Mounting: Weld-on DIN28120 or similar assembly
Glass: Borosilicate to DIN7080
Metal: Carbon, stainless steel or Hastelloy
Up to 572° F.
Up to 900 psi
Ratings and approvals: PED, DIN7079, TÜV
Sizes: 1 to 5 inches (view)
Metaglas® Sight Glass Disc with Wiper, Type 73 SW
Mounting: Any sight glass assembly
Glass: Borosilicate to DIN7080
Metal: Carbon, stainless steel and Hastelloy
Up to 302° F.
Up to 230 psi
Ratings and approvals: PED, DIN7079, TÜV
Sizes: 3 to 8 inches (view)