Graco 15G668 Cover Air 1590 Sanitary Machined

Cover – Model 15G668 (Air 1590, Sanitary, Machined)

The 15G668 COVER, AIR, 1590, SANITARY, MACHINED is a premium machined air-side cover designed for use in the 1590-series sanitary fluid systems. Engineered for rigorous industrial and sanitary applications, this cover provides robust protection for the air chamber, ensures precise alignment, and supports efficient pump operation under high-performance conditions.

Key Specifications

Product Highlights

• Designed for sanitary pump systems, helping support Food, Beverage or Pharmaceutical-grade environments.
• Precision-machined housing ensures accurate air chamber alignment and stable diaphragm motion under load.
• Durable construction built to withstand high pressures, frequent cycling and rigorous service intervals.
• Provides reliable sealing and performance in demanding industrial spray or fluid-handling setups.

Installation & Service Notes

Prior to installation, ensure the pump is depressurized and isolated. Remove the existing air cover from the 1590-series pump, clean the mounting surfaces thoroughly and inspect for any damage or wear. Position the new 15G668 cover, align bolts and mounting faces, then secure using the recommended hardware and torque specifications. After installation, reconnect the air supply, verify operation under light load, then resume full service while monitoring for proper alignment, sealing and performance.

Maintenance & Care

• Inspect the cover regularly for wear, damage or surface imperfections especially after heavy use or harsh service conditions.
• Clean external surfaces to remove overspray, chemical residues or debris that may impair service access or alignment.
• Ensure all mounting bolts remain tight and that no vibration or looseness is present—looseness may indicate internal misalignment or part fatigue.

Frequently Asked Questions