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

Sight Spool With Optional K-Type Thermocouple Monitoring – Engineered for Visibility and Precision, Built for Control

The Sight Spool with Optional K-Type Thermocouple Monitoring from N.B. Oler is engineered to combine visual inspection with accurate temperature measurement. This 4″ diameter, 6″ tall spool gives you a clear view into your process, while the included K-type thermocouple enables real-time temperature tracking. Manufactured with stainless steel and sanitary fittings, the design is rugged, clean, and precisely built for demanding industrial or extraction systems. Tested thoroughly, this sight spool ensures both safety and operational insight — giving engineers and operators confidence in their system’s performance.

Key Features

1. Integrated K-Type Thermocouple Port
Comes with a built-in spot for a K-type thermocouple, allowing you to monitor temperature without disrupting your process.

2. Sanitary Connections
Designed with 4″ top and bottom sanitary tri-clamp ports and 2″ sight glass connections for clean, secure installation.

3. Heavy-Duty Stainless Steel Construction
Built from durable stainless steel for reliability, corrosion resistance, and long-term operational stability.

4. High-Pressure Rated Clamps
Rated for up to 1,000 psi on 2″ clamps and 600 psi on 4″ clamps, providing strength in high-pressure systems.

5. Versatile Gasket Options
Compatible with a range of gasket materials — Viton, Buna-N, PTFE, or Tuf-Steel — for flexibility based on your operating conditions.

Product Specifications

• Diameter: 4″
• Height: 6″
• Top/Bottom Connections: 4″ sanitary tri-clamp
• Sight Glass Connection: 2″ sanitary
• Clamp Pressure Rating:

  • 2″: up to 1,000 psi

  • 4″: up to 600 psi

• Gasket Materials Supported: Viton, Buna-N, PTFE, Tuf-Steel
• Temperature Range (Gasket Dependent):

• • 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

• Thermocouple Type: K-type (optional)

Benefits

1. Real-Time Visual Monitoring
The sight glass allows you to clearly observe fluid flow, bubbles, or phase changes, helping with process control and troubleshooting.

2. Accurate Temperature Measurement
The optional K-type thermocouple provides reliable, continuous temperature data — ideal for optimizing your system’s performance.

3. Strong and Durable
Built with stainless steel, the spool withstands high pressures and repeated use, giving you a long-lasting component.

4. Customisable to Your Needs
With multiple gasket materials available, you can tailor the spool to your system’s chemical compatibility and temperature range.

5. High Safety Margin
Rated for high clamp pressures, this sight spool offers a secure seal that maintains integrity under demanding conditions.

6. Process Insight + Control
Combining visibility and temperature data helps operators make better-informed decisions, improving safety, efficiency, and reliability.