Graco 16E844 Pump Inlet Valve Repair Kit

The Graco 16E844 Pump Inlet Valve Repair Kit restores suction and priming performance for select Magnum paint sprayers. Ideal when your unit fails to draw material or leaks back through the inlet.

Includes inlet housing, ball, spring, and seals
Fixes inlet leakage and priming loss
Compatible with Magnum X5, X7, LTS 15, LTS 17, and Project Painter Plus
OEM Graco replacement kit ensures reliable pump performance

Retail Price: $64.5

You save: $4.9 (7.60%)

Our Price: $59.6

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Description

Compatibility & Key Details for Graco 16E844 Pump Inlet Valve Repair Kit

Compatible Machines

This kit services the inlet (suction) check valve on select Magnum homeowner sprayers. Confirm your model’s series letter before ordering.

Magnum X5 (common Series B–E)
Magnum X7 (common Series B–E)
LTS 15
LTS 17
Project Painter Plus

Tip: Check your sprayer’s data plate for exact model/series to ensure the 16E844 is specified in its parts list.

What the Graco 16E844 Pump Inlet Valve Repair Kit Does

The 16E844 restores prime and suction by renewing the inlet check assembly on compatible Magnum sprayers. If your unit won’t draw material, loses prime, or leaks back through the inlet, this kit replaces the worn ball/seat and related pieces so the pump seals correctly on the intake stroke.

What’s Included & Key Notes

Item	Details
Kit Number	16E844 – Pump Inlet Valve Repair Kit
Typical Contents	Inlet housing/seat, check ball, spring (return component), seals/O-ring(s), and instructions (contents may vary by revision).
Function	Rebuilds the inlet (suction) check so the pump can draw and hold prime correctly.
When to Use	Hard or no priming, inlet leakage, surging from suction, or visible seat/ball wear.
Compatibility Note	Match your exact model and series (e.g., X5/X7 Series B–E) against your parts manual before purchase.

Installation & Use Notes

Depressurize, unplug, and follow your sprayer’s service manual for inlet valve removal and reassembly.
Clean the pump cavity and mating threads; debris can prevent proper sealing even with new parts.
Replace worn O-rings and lubricate per manual. Do not overtighten the housing.
After reassembly, prime with water/appropriate solvent first to confirm proper operation.

Common Symptoms Indicating Inlet Kit Service

Pump won’t prime or frequently loses prime
Material pulls air at the inlet or drips back from the suction side
Intermittent flow or surging at the gun despite a good outlet valve

Frequently Asked Questions

Check your sprayer’s model and series letter on the data plate, then verify in the official parts manual. If the inlet valve line item lists 16E844, this is the correct kit.

The inlet valve controls suction into the pump; the outlet valve controls flow leaving the pump. Each uses different parts and part numbers. Use 16E844 only where your manual specifies it for the inlet side.

Typically no special tools beyond wrenches and common hand tools. Follow torque/assembly guidance in your service manual and ensure all sealing surfaces are clean.

Check for air leaks at the suction tube, clogged inlet strainer, or a worn outlet valve. Confirm you installed all O-rings and that the ball/seat are clean and oriented correctly.

No—those professional units use different pump families and valve kits. The 16E844 is intended for the Magnum homeowner series listed above.