Graco 102972 Metallic Ball

Graco 102972 Metallic Ball is a 7/8″ OEM check-ball designed for piston and inlet valve assemblies in Graco airless sprayers. It ensures reliable sealing, smooth paint flow, and consistent pressure.

OEM replacement – part number 102972 (102-972)
7/8″ metallic ball for high-pressure pump check-valve systems
Used in Graco Ultra Max II 1095 and Mark V sprayers
Durable stainless/hardened steel for extended service life

$23.5

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Description

OEM 7/8″ Check Ball for Graco Pumps (Piston/Inlet Valve)

Compatible Machines

Graco Ultra Max II 1095 ProContractor (models 16Y829, 16Y830, 16Y831)
Graco Mark V (select units using 7/8″ metallic check ball; verify by pump manual)
Other Graco piston/displacement pumps specified for a 7/8″ metallic ball in the inlet/piston valve

Product Overview

Graco 102972 Metallic Ball (also referenced as 102-972) is the OEM check-ball used inside Graco displacement/piston pump valve assemblies. Its precision spherical surface seals against the valve seat to ensure one-way flow, stable pressure, and long service life.

Key Specifications

Part Number	102972 (102-972)
Description	Metallic Ball – check-ball for piston/inlet valve assemblies
Nominal Diameter	7/8″
Typical Location	Inlet or piston valve (ball & seat) of Graco airless pump assemblies
Function	Ensures one-directional flow and proper sealing to maintain output pressure
Replaces/Used With	OEM ball in pumps calling for a 7/8″ metallic check-ball

Install & Maintenance Tips

Inspect and clean the valve seat before installing the new metallic ball; replace the seat if pitted or grooved.
Observe correct orientation/stack order in the valve assembly per the service manual.
After reassembly, pressure-test to verify sealing and stable spray pattern.

Frequently Asked Questions

It fits Graco pumps that specify a 7/8″ metallic check-ball in the inlet/piston valve. Confirm against your model’s parts list or serial-specific manual before purchase.

Hard starting, pressure drop, pulsation, or material back-flow often point to a worn ball/seat. Inspect both parts; replace as a set if the seat is damaged.

Yes. A metallic (often stainless/hardened) ball is specified for durability and sealing at airless pressures. Do not substitute different sizes or materials unless approved for your pump.

Follow the service manual for your pump. Typically no sealant is used on the ball itself; ensure correct torque on retainers and recheck after a short test run.

Reuse is not recommended. Even minor surface wear can affect sealing and pressure stability. Replace the ball (and seat if worn) to restore performance.