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Graco 288788 Overnite Drain Valve Repair Kit

The Graco 288788 Overnite Drain Valve Repair Kit is used to rebuild the automatic drain valve in Graco air filtration systems, ensuring proper moisture and fluid drainage when the system is depressurised.

  • Restores automatic overnite drain function
  • Prevents moisture and fluid buildup
  • Maintains clean, reliable air supply
  • Fits Graco inline filters and coalescers with overnite drain valve

$44.85
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Graco 288788 Overnite Drain Valve Repair Kit – Product Overview

The Graco 288788 Overnite Drain Valve Repair Kit is designed to service and rebuild the overnite drain valve used in Graco automatic air and fluid filtration systems. This kit restores proper opening and closing of the drain mechanism, allowing moisture or residual fluid to be discharged when the system is depressurised, helping prevent internal corrosion, contamination, and material curing during shutdown periods.

Compatible Machines

  • Graco Integrated In-Line Air Filters with Overnite Drain Valve
  • Graco Air Line Coalescers with Automatic Drain Assembly
  • Graco Industrial Air Preparation Units using Overnite Drain Valve Assembly (Part No. 288788)

What the Overnite Drain Valve Does

Function Description
Automatic Drain Releases collected moisture or fluid when air pressure is removed from the system.
Seal Protection Prevents internal components from drying, hardening, or corroding during overnight shutdown.
System Reliability Maintains consistent air and fluid quality by removing trapped condensate.

Kit Contents (Typical)

  • Valve seals and O-rings
  • Piston and spring components
  • Internal wear parts for the overnite drain mechanism

Frequently Asked Questions

The overnite drain valve automatically opens when the system is depressurised, allowing trapped moisture or fluid to drain out, which helps prevent internal buildup, corrosion, and contamination.

This kit is used in Graco inline air filters and coalescers that are equipped with the overnite drain valve assembly using part number 288788.

Rebuilding the valve with the correct repair kit restores sealing performance and movement at a lower cost than replacing the complete drain valve assembly.

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