The GRACO 562681 Manzel® MHH-12S Modular Divider Valve Block Assembly is a precision-engineered, modular divider valve designed for use in high-pressure oil lubrication systems. It is constructed with robust materials suitable for industrial environments and is intended to deliver highly accurate, positive lubrication to multiple points in demanding applications such as gas engines, compressors, and similar equipment.

Key Features:

• Modular, Series-Progressive Divider Valve
• MHH-12S
• Industrial-grade materials, modular stackable sub-plate design, soft-seal O-ring construction (choice of Buna-N or fluoroelastomer)
• Up to 7500 PSI (517 bar)
• Petroleum or synthetic oils
• Quick-change valve sections for easy maintenance without disturbing lube lines
• Stackable sub-plate design for flexible build-up and installation
• Built-in check valves to prevent lube backflow and keep lines full
• Indicator ports for visual diagnostics and electrical monitoring
• Performance indicators and proximity switches for cycle monitoring
• Ample clearance for elbows and 3/8" lube lines
• Choice of SAE or NPSF inlet/outlet connections

Applications:
Used in terminating oil systems for gas engines, compressors, and similar equipment requiring precise, high-pressure lubrication to multiple points.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the lubrication system.
• Ensure proper torque on mounting screws (8-9 ft-lbs), indicator ports (8-9 ft-lbs), and tie rod nuts (5-8 ft-lbs)
• Use appropriate O-rings (70 Durometer Buna-N or 90 Durometer fluoroelastomer) for the application
• Check for leaks and proper function after installation
• Regularly monitor indicator ports and cycle indicators for troubleshooting
• Follow manufacturer’s torque specifications for all fasteners
• Inspect O-rings and seals during maintenance
• Use only compatible lubricants (petroleum or synthetic oils)
• Accessorize with magnetic or electronic proximity switches for cycle monitoring