GRACO Repair Cylinder Kit for Mark IV Pro - (SKU: 17H870)The GRACO 17H870 KIT, REPAIR, CYL, MKIV, PRO is a replacement cylinder repair kit designed for use with GRACO Mark IV ProContractor spray equipment. The kit is intended to restore or maintain the performance of the pump cylinder assembly, ensuring reliable operation and fluid handling. Material specifics are not specified, but GRACO repair kits are typically constructed from durable, chemical resistant materials suitable for industrial environments.

Regularly inspect O-RINGs for wear and replace as needed

Ensure the thread size matches the equipment requirement (1 9/16 inch)

Used in GRACO paint spray guns and line striping equipment for road marking and industrial coating applications

intended for use in high-volume industrial and OEM applications where reliable

Refer to the GRACO GH200 Standard sprayer manual for specific installation instructions

Check ball

or control mechanisms

TUBE is a small

Designed for use with GRACO single-line lubrication systems

1/2" NPT X 7/8" ORB

It is intended to prevent leakage and maintain pressure integrity in various GRACO fluid handling equipment

but it is intended for use as a support or fastening element in various GRACO systems