Jacoby-Tarbox manufacturers sight windows with both male and female threaded connections. Specialty UniGlas sight plugs are available up to 4000 psig (275 bar).
• UniGlas sight plugs feature fused glass, eliminating all seals and leak paths
• Standard windows, with replaceable glass and gaskets, available to 150 psig / 10.3 bar (consult factory for higher pressures)
• Standard windows available with quartz glass for service temperatures up to 2012°F / 1100°C
• Custom sizes are available