Graco 17M882 Prime Valve Knob

The Graco 17M882 Prime Valve Knob provides precise, ergonomic control of the prime/flow valve on compatible Graco airless sprayers. Its tool‑free install and rugged design make it an ideal OEM replacement for worn or broken knobs. :contentReference[oaicite:6]{index=6}

OEM prime valve knob (17M882)
Precise priming and flow control
Tool‑free installation
Durable, corrosion‑resistant design
Fits Ultra and related Graco sprayers
Improves operator comfort
Restores original control feel

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Description

Graco 17M882 Prime Valve Knob — Precision Priming Control

The Graco 17M882 Prime Valve Knob is a genuine Graco OEM replacement knob for controlling the prime valve on compatible sprayer models. This knob enables precise control of priming and fluid flow during setup, ensuring a smooth transition from priming to spraying. Designed for industrial, commercial, and residential applications, the 17M882 knob delivers ergonomic ease of use and long‑lasting durability even in demanding work environments. :contentReference[oaicite:5]{index=5}

Compatible Machines & Models

Compatible Sprayer Model / Series	Notes
Graco Ultra Corded Handheld Sprayer	Uses prime valve knob for pump priming control
Graco Ultra Cordless Handheld Sprayer	Tool‑free installation and ergonomic control
Graco UltraMax / Quickshot Sprayer Series	Common prime valve interface knob
Other Graco handheld & compact sprayers	Models that specify 17M882 in parts list

Product Overview

Part Number: 17M882
Product Type: Prime Valve Knob
Function: Manual control of prime/flow valve
Fitment: OEM replacement for compatible Graco sprayers
Installation: Tool‑free twist‑on mount

Benefits

Enables rapid priming of the fluid path
Ergonomic grip for comfortable operation
Corrosion‑resistant design for rugged job site use
OEM fit ensures reliable performance and alignment
Restores precise control after wear or breakage

Features

Tool‑free installation and removal for quick servicing
Knurled surface for secure grip even with gloves
Durable polymer/metal construction to resist wear
Smooth rotational feel for repeatable control
OEM part for warranty and performance assurance

When to Replace the Prime Valve Knob

If the knob becomes cracked or stripped
If it no longer engages the prime valve smoothly
When frequent priming requires a more ergonomic control
If the original knob has worn knurling or grip surface

Frequently Asked Questions

The prime valve knob controls the prime/flow valve on the sprayer, enabling you to pull fluid through the pump and hose before spraying begins, ensuring smooth material feed.

Installation is typically tool‑free — simply align and twist onto the prime valve shaft until seated. Refer to your sprayer manual for exact alignment details.

This knob is specifically designed for Graco prime valve shafts and may not fit other brands unless the shaft geometry and mounting are identical.