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
1 

Model #

Size

OAL Diameter (A)

View Diameter

Pressure Rating

W14-BT-15-150N N/A 1-1/2 in N/A 5.00 in N/A 1.57 in N/A 150 PSIG @ 450 ºF
W14-BT-20-150N N/A 2 in N/A 6.00 in N/A 1.97 in N/A 150 PSIG @ 450 ºF
W14-BT-30-150N N/A 3 in N/A 7.50 in N/A 2.95 in N/A 150 PSIG @ 450 ºF
W14-BT-40-150N N/A 4 in N/A 9.00 in N/A 3.94 in N/A 150 PSIG @ 450 ºF
W14-BT-60-150N N/A 6 in N/A 11.00 in N/A 5.51 in N/A 150 PSIG @ 450 ºF
W14-BT-80-150N N/A 8 in N/A 13.50 in N/A 6.30 in N/A 150 PSIG @ 450 ºF
W14-BT-15-300N N/A 1-1/2 in N/A 6.12 in N/A 1.57 in N/A 300 PSIG @ 450 ºF
W14-BT-20-300N N/A 2 in N/A 6.50 in N/A 1.97 in N/A 300 PSIG @ 450 ºF
W14-BT-30-300N N/A 3 in N/A 8.25 in N/A 2.76 in N/A 300 PSIG @ 450 ºF
W14-BT-40-300N N/A 4 in N/A 10.00 in N/A 3.94 in N/A 300 PSIG @ 450 ºF
W14-BT-60-300N N/A 6 in N/A 12.50 in N/A 4.92 in N/A 300 PSIG @ 450 ºF
W14-BT-80-300N N/A 8 in N/A 15.00 in N/A 5.90 in N/A 300 PSIG @ 450 ºF
Unit of Measure
1