Encole has designed and manufactured optically clear sight glasses, which use quartz as the window material. They can withstand higher pressures than typical fused sight glasses on the market today. The sight glasses are available in various configurations including, NPT, Metric and SAE.

Encole LLC introduces optically clear high-pressure sight glasses in NPT, SAE and Metric-threaded fittings, available in volume production. These sight glasses are commonly used in process industries, including refrigeration and energy generation. The advantage of these Encole sight glasses is optical clarity not available in fused sight glasses.
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