John C. Ernst Co, Inc.
John C. Ernst Co, Inc.
21 Gail Court
Sparta, NJ 07871-3438
USA

Toll Free: 888.943.5000
Phone: 973.940.1600
Fax: 973.940.1620
Email: sales@johnernst.com
Website: www.johnernst.com
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Benefits & Features
  • Glass Fused to Metal Ring per DIN7079
  • Superior clarity with higher pressure and temperature ratings than standard observation plate glass
  • Suitable for sight flow indicators, sight windows, and sanitary indicators
  • Highly resistant to impacts and erosion
  • Resistant to surface damage
  • High tolerance to uneven and or repeated torqueing without damaging the glass
  • Reusable for easy maintenance
  • Style BT bolts to vessel flange without requiring a cover flange
  • Styles BT mate to ANSI B16.5 flanges
  • Ratings: 85 to 600 PSIG, up to 536 ºF
W14 Series Style BT Bolt-Through Disc Fused Glass Sight Windows
Unit of Measure
Items W14 Series Style BT Bolt-Through Disc Fused Glass Sight Windows
W14-BT-15-150N
Sight Window 		W14 Series Style BT Bolt-Through Disc Fused Glass Sight Windows
W14-BT-20-150N
Sight Window 		W14 Series Style BT Bolt-Through Disc Fused Glass Sight Windows
W14-BT-30-150N
Sight Window 		W14 Series Style BT Bolt-Through Disc Fused Glass Sight Windows
W14-BT-40-150N
Sight Window 		W14 Series Style BT Bolt-Through Disc Fused Glass Sight Windows
W14-BT-60-150N
Sight Window
Description N/A Benefits & Features
  • Glass Fused to Metal Ring per DIN7079
  • Superior clarity with higher pressure and temperature ratings than standard observation plate glass
  • Suitable for sight flow indicators, sight windows, and sanitary indicators
  • Highly resistant to impacts and erosion
  • Resistant to surface damage
  • High tolerance to uneven and or repeated torqueing without damaging the glass
  • Reusable for easy maintenance
  • Style BT bolts to vessel flange without requiring a cover flange
  • Styles BT mate to ANSI B16.5 flanges
  • Ratings: 85 to 600 PSIG, up to 536 ºF
Series N/A W14
Size N/A 1-1/2 in N/A 2 in N/A 3 in N/A 4 in N/A 6 in
Body Material N/A Duplex 2205 Stainless Steel (SS)
Gasket Material N/A Duplex 2205 Stainless Steel (SS)
Lens N/A Fused Borosilicate
OAL Diameter (A) N/A 5.00 in N/A 6.00 in N/A 7.50 in N/A 9.00 in N/A 11.00 in
View Diameter N/A 1.57 in N/A 1.97 in N/A 2.95 in N/A 3.94 in N/A 5.51 in
Pressure Rating @ 450 ºF N/A 150 PSIG
Length N/A 7.500 in N/A 8.5 in N/A 10.5 in N/A 13.00 in N/A 16 in
Width N/A 7.5 in N/A 8.5 in N/A 10.5 in N/A 13.00 in N/A 16 in
Height N/A 4.5 in N/A 5.00 in N/A 5.00 in N/A 5.00 in N/A 6.00 in
Dimension B N/A 1.57 in N/A 1.97 in N/A 2.95 in N/A 3.94 in N/A 5.51 in
Dimension C N/A 0.63 in N/A 0.79 in N/A 0.79 in N/A 0.79 in N/A 0.98 in
Weight N/A 3.10 lbs N/A 5.60 lbs N/A 8.4 lbs N/A 12.00 lbs N/A 21.7 lbs