Double Window Flow Sight Glasses NPT – Douglass

DOUGLASS flow sight glasses, manufactured in stainless steel, allow for fluid visibility within the pipeline. Depending on the type of fluid, they can have different viewing options:

• Free passage type: where the flow is easily visible, and anomalies are inspected.
• Rotor type: where the fluid is translucent, and the inspection is focused on flow presence.
• Fin type: which serves as an alternative to the rotor and measures flow intensity.
• Drip type: designed for gases.

These indicators are forged as a single piece, ensuring excellent resistance to pressure and harsh conditions. They can be manufactured with any NPT connection ranging from 1/4″ to 1″. The choice of seals and glass materials will be recommended based on operating conditions.