Spindle and Knob – Cool Tube / Respirator Cooling System Component

Part Number: 407001-09
Weight: 0.04 lbs

The Spindle and Knob Assembly is a critical OEM-compatible component of the RPB® Cool Tube (Cold Air Tube Assembly), responsible for allowing operators to manually adjust the temperature of the cooled breathing air delivered to their respirator. This assembly enables smooth, precise control of airflow through the Cool Tube, ensuring users can maintain comfortable air temperature in hot industrial environments.

Designed for durability, simplicity, and consistent performance, the spindle and knob interface with the regulator body to provide reliable temperature adjustment throughout demanding blasting, coating, and industrial operations.

Key Features & Benefits

Precise Temperature Adjustment

• Controls airflow through the Cool Tube for optimal cooling

• Allows operators to fine-tune the temperature drop (up to 32°F / 18°C)

• Ensures consistent comfort during high-heat work environments

Durable & Lightweight Construction

• Strong internal spindle ensures dependable regulation

• Knob is designed for easy gripping—even with gloves on

• Built from high-quality materials for long service life

Smooth Operating Mechanism

• Provides accurate, responsive temperature control

• Works seamlessly with the regulator body and locking screw

• Reduces wear on the Cool Tube’s internal components

OEM-Compatible Fit

• Designed to match RPB® Safety specifications

• Direct replacement for worn or damaged spindle/knob assemblies

• Maintains system integrity and proper temperature control functionality

Easy Installation

• Quick drop-in replacement with no specialized tools required

• Ideal for maintenance programs and multi-operator equipment rotation

OEM Cross-Reference

Ideal Applications

• Abrasive blasting

• Hot industrial environments

• Surface preparation and coating operations

• Cool Tube refurbishment and scheduled maintenance

• Operators requiring reliable, adjustable air cooling