Product Description

The Rainbow R-7491 is an original brass nut with flat bottom designed for secure separator attachment on Rainbow and Rexair water-based vacuum systems. This precision-engineered fastener ensures proper seal and stability of the separator assembly, maintaining optimal vacuum performance and water seal integrity.

Constructed from durable brass material, this nut provides corrosion resistance and reliable long-term performance in wet environments typical of Rainbow vacuum operation. The flat bottom design ensures stable seating and even pressure distribution on the separator bowl.

This part is compatible with Rainbow and Rexair water vacuum models that use the standard separator assembly configuration. Original Rainbow/Rexair parts guarantee exact fit and reliable performance.

Swiss Boy Vacuum is an authorized Rainbow and Rexair dealer serving the Wasatch Front since 1963. We stock genuine parts and provide expert repair and maintenance service. Contact us at 801-298-3656 for compatibility confirmation or to order.

Why Choose This Product?

• Original Rainbow/Rexair OEM part ensures exact fit and compatibility
• Brass construction resists corrosion in wet operating conditions
• Flat bottom design provides stable, secure separator attachment
• Critical fastener for maintaining water seal integrity
• Essential replacement for separator maintenance and repair

Specifications

• Brand: Rainbow / Rexair
• Part Number: R-7491
• Material: Brass
• Design: Flat bottom nut
• Application: Separator attachment

Compatibility

• Rainbow Models: Standard water vacuum systems with separator assembly
• Rexair Models: Compatible Rexair water vacuum units

Use Case

This brass nut is essential for anyone maintaining or repairing a Rainbow or Rexair water-based vacuum system. If your separator is leaking, loose, or not sealing properly, this fastener may be the culprit. It's a small but critical component that keeps the water bowl assembly secure and prevents air leaks that compromise suction power and water seal effectiveness. Regular maintenance of these fasteners extends separator life and ensures peak vacuum performance.