4" Diameter x 6" Tall Sight Spool with Optional K-Type Thermocouple Monitoring

$350.00 $500.00

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4" Diameter x 6" Tall Sight Spool, featuring 4" sanitary top/bottom connections and 2" sanitary sight glass connections. This versatile sight spool is designed for easy monitoring and temperature control, with an optional K Type Thermocouple for accurate temperature readings. Our data logger is also available for purchase to complement your sight spool. Sight Glasses sold separately.

Parameter Value
Top/Bottom Connection 4" Sanitary
Sight Glass Connection 2" Sanitary
Gasket Options Viton, Buna-N, PTFE, Tuf-Steel
Clamp Pressure Ratings 2": 1000psi, 4": 600psi


Gasket Type Temperature Range
Viton -26°C to 230°C
Buna-N -40°C to 110°C
PTFE -73°C to 204°C
Tuf-Steel -198°C to 287°C


*Note: Stainless only. Gaskets/clamps/thermocouples/sight glasses sold separately.

Links to additional products

Various Length Thermocouples

Various Length Thermocouple Wires

K-Type Thermocouple Data Logger

N.B.Oler is American Fabricated Stainless steel, made in Bend, Oregon.

Certification is available in all Canadian provinces and U.S. states.

Please note that all products are subject to a 15% restocking fee, and custom orders may be subject to as high as 50%.

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