The GRACO 6690-16-77-500R is a pressure switch designed for use in automatic lubrication systems and other industrial applications. It is constructed with durable materials, including stainless steel wetted parts, and is intended to detect and respond to pressure changes within equipment, ensuring reliable operation and system protection.

Key Features:

• Pressure switch
• 6690-16-77-500R
• Stainless steel 316L/1.4404 wetted parts, robust enclosure
• Set point range: 290–5800 psi (20–400 bar; 2.07–40 MPa); Reset point range: 175–5685 psi (12–392 bar; 1.2–39 MPa); Factory default: 500 psi (35 bar, 3.5 MPa)
• Designed for use with GRACO automatic lubrication systems and compatible equipment
• Ingress Protection (IP67)
• Easily adjustable set/reset points
• LED indicators for power and switching status
• High repeatability and accuracy (< +2.5% full range, < +0.5% repeatability)
• Moisture-resistant and suitable for harsh environments
• Compact and lightweight (3.2 oz, 0.092 kg)

Applications:
Used in automatic lubrication systems for industrial, mining, and agricultural equipment to monitor and control system pressure, ensuring safe and efficient operation.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing systems.
• Ensure proper alignment and secure connection (1/4 NPT, M12 termination)
• Follow manufacturer’s instructions for set/reset point adjustment
• Regularly inspect for signs of wear or damage
• Maintain clean and dry installation environment to maximize lifespan