Graco 556327 MSP Outlet Check Ball

MSP Outlet Check Ball – Graco Part 556327

Compatible Systems

• Graco Trabon progressive lubrication components
• Equipment whose Graco parts list calls for part number 556327

Graco 556327 MSP Outlet Check Ball (Graco part number 556327) is a valve internal. Seats, balls and poppets are the sealing parts inside a check valve or pump; they wear with use. Trabon is a series-progressive lubrication line, including modular divider valves, that Graco lists under Vehicle Service and Automatic Lubrication.

About the Trabon progressive lubrication components

A divider valve assembly is an inlet section, valve sections and an end section held together by tie rods. While lubricant is supplied under pressure to the inlet the valve pistons cycle progressively; if flow stops the pistons stop and resume at the same point in the cycle. Graco lists uses such as: Metering oil or grease to multiple lube points from a single pump in an automatic lubrication system; Machinery lubrication with Trabon Series-Flo divider valves driven by a Lubemaster pump. Trabon divider valve assemblies dispense lubricant progressively from a single supply. If lubricant flow stops, the divider valve pistons stop and resume at the same point in the cycle when flow returns. Divider valve sections are stamped with the valve style, the discharge per stroke, and the number of outlets.

What the Terms in the Part Name Mean

• MSP: Trabon MSP Series modular divider valve; Graco describes it as the original modular-style progressive divider valve. Example MSP-40S: 0.080 in3 per piston stroke, carbon steel body, oil or grease up to NLGI 2.
• Check: One-way valve element.

Before You Order

• Check the valve type (check, solenoid, relief, dispense or divider) and its port size.
• For electrically operated valves, check the supply voltage given in the description.
• Have your equipment model, and the serial number if available, ready if you contact us for help.

Service Notes

• Follow the pressure relief and lock-out steps in your Graco manual before servicing any pump, valve, applicator or electrical part.

Frequently Asked Questions