Graco 287877 Piston Valve Repair Kit

The Graco 287877 Piston Valve Repair Kit restores smooth pumping and sealing performance in your airless sprayer’s fluid section. Ideal for professional sprayer maintenance and longevity.

OEM Part #287877 – Genuine Graco replacement
Fits Ultra Max II 695/795/1095 & GMAX 3900 series
Replaces older part 239932
Located in the fluid section above the ball cage

Retail Price: $152.5

You save: $15.86 (10.40%)

Our Price: $136.64

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Description

Overview & Compatibility Summary for Graco 287877 Piston Valve

Compatible Machines

Ultra Max II 695 Series
Ultimate MX II 695 Series
Ultra Max II 795 Series
Ultimate MX II 795 Series
Ultra Max 795 Series (older)
Ultimate MX 795 Series (older)
Ultra Max II 1095 Series
Ultimate MX 1095 Series
GMAX 3900 Series
GMAX II 3900 Series (Gas)
LineLazer II 3900 (1-Gun, p/n 233726)
LineLazer II 3900 (2-Gun, p/n 233727)
Mark IV (TexSpray, p/n 249636)

What is the 287877 Piston Valve?

The Graco 287877 is a Piston Valve (Repair Kit) for the pump fluid section. It sits on/above the ball cage with the displacement rod, nut, and packings, restoring proper sealing and flow when the valve seat is worn.

Key Details & Cross-Refs

Attribute	Value
OEM Part	287877 (Piston Valve / Repair Kit)
Supersedes / Replaces	239932 (older piston valve number)
Typical Location	Fluid section (on top of ball cage / packing nut area)
Common Series	Ultra Max II 695/795/1095, Ultra Max 795, GMAX 3900 (incl. GMAX II 3900), select LineLazer II 3900, Mark IV
Aftermarket Cross	Bedford 58-3178 (replacement for 287-877)

Fitment Notes

Some 695-series units vary by generation; verify by exact model and serial.
Use genuine parts for longevity; replace if valve/seat shows wear, nicks, or poor sealing.
Follow the official pressure-relief and pump service procedure before disassembly.

Frequently Asked Questions

Yes—multiple sources list 287877 as the current piston valve that replaces 239932.

In the fluid section, typically on/above the ball cage and around the packing nut area, working with the displacement rod and packings.

Most 695 models use it, but not all. Check your exact model and serial number to confirm compatibility before purchase.

Yes—Bedford Precision lists 58-3178 as a replacement for Graco 287877. Use OEM when possible for best longevity.

Always perform the full pressure-relief procedure and follow the pump service steps from the Graco manual. Inspect the sleeve and rod for wear or scratches before reassembly.