These Window Flow Sights for Full Flow are specially configured.  The units are primarily used in low pressure oil lines.  The air-tight glass sight allows visual observation of the liquid flow, clarity, and condition.  There are no restrictions on the inside of the sight, resulting in the full flow of liquid, equal to the respective pipe size. 
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Item #

Feature

Port

Approximate Flow Rate

Inlet

Outlet

Max Pressure

Sight Material

Body

Seals

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N/A For Fluid Flowing Up N/A 11/16" N/A Equal to Pipe Size N/A 1/4" Female NPT N/A 1/4" Female NPT N/A 125 PSI N/A 225° F N/A Plated Steel N/A Buna-N
N/A N/A N/A N/A 1/4" Female NPT N/A 1/4" Female NPT N/A 350 PSI N/A Glass N/A Plated Steel N/A Viton
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