Graco 189383 Stainless Steel Cylinder

Graco 189383 Stainless Steel Cylinder is a durable OEM pump cylinder designed for heavy-duty Graco Dura-Flo 900 lowers and King-series air motors. Built for corrosion resistance and long service life.

Fits King 56:1, NXT X30:1 & X16:1, Bulldog 28:1, Senator 17:1, and GH 5030 rigs
Made from stainless steel for superior wear and chemical resistance
Ideal for industrial coatings, sealants, and adhesives applications

List Price: $1865

You save: $298.4 (16.00%)

Sale Price: $1566.6

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Description

Compatible Machines

This Graco 189383 Stainless Steel Cylinder (pump cylinder kit) is used on select high-pressure Graco industrial pump lowers. Confirm your pump ratio/model before ordering.

Graco 56:1 King (Dura-Flo 900 lower with King air motor)
Graco X30:1 NXT Dura-Flo
Graco X16:1 NXT Dura-Flo
Graco 28:1 Bulldog (Dura-Flo 900)
Graco 17:1 Senator (Dura-Flo 900)
Graco 5030 GH Roof Rig

Overview & Key Details

The 189383 cylinder is the stainless-steel pump cylinder used in select Dura-Flo 900 lowers. Stainless construction provides corrosion resistance and long service life in demanding industrial coatings and adhesives applications.

Spec / Note	Details
Part Number	189383
Material	Stainless Steel (pump cylinder)
System Family	Dura-Flo 900 pump lowers (various ratios as listed above)
Typical Use	Industrial spray/transfer of coatings & adhesives; high-pressure fluid handling
Fitment Tip	Match by pump lower/ratio and air motor family (King, NXT, Bulldog, Senator, GH)

Why choose stainless steel?

Improved corrosion resistance vs. carbon steel in harsher materials/environments
Durable internal sealing surfaces for extended maintenance intervals
Approved configuration in Graco service manuals for Dura-Flo 900 lowers

Fitment & Ordering Notes

Verify by pump lower bill of materials/ratio and your sprayer/rig’s model code.
If converting materials (e.g., from carbon-steel cylinder), follow the Graco service manual for reassembly torque and packing stack orientation.
Inspect piston/ball seats and packings during cylinder replacement; service related wear parts together for best results.

Frequently Asked Questions

No. It fits specific Dura-Flo 900 lowers used with the machines/ratios listed above (e.g., 56:1 King, X30:1 NXT, 28:1 Bulldog, 17:1 Senator). Always confirm against your model’s parts manual or BOM.

Yes—189383 is the OEM stainless cylinder called out in Graco Dura-Flo 900 pump documentation for applicable models.

Follow the service manual: use proper wrench flats, protect sealing surfaces, and drive the rod out with a rubber mallet (not a hammer). Re-torque per spec and lubricate packings on reassembly.

Check the pump ratio and lower model on your machine’s data plate, then match it to the list above or to the Graco parts manual for your exact model. If your ratio/air motor family isn’t listed, contact support before ordering.