An airless system moves paint through the inlet screen, the pump, the filters, the hose, the gun, the tip guard and the tip. Each stage has a wear sign: a blocked screen stops priming, worn packings leak at the wet cup, clogged filters cause pulsing and spitting, and a worn tip gives a coarse pattern. Order parts from the diagram page for your model.
Intake: siphon tube and inlet screen
Paint enters through the siphon (suction) tube, and the inlet screen on the end of it keeps lumps and debris out of the pump. Titan's manuals say to check the screen each time you change containers. A screen that is clogged starves the pump, which then looks like a prime failure or a pump that will not hold pressure. The site lists screens such as the 710-046 and a siphon hose, the 700-1023A, on the Titan filters pages. Check which one your model uses on its diagram.
The pump
The pump is a piston pump. The piston rod moves through packings that seal it, and the wet cup holds throat-seal lubricant (pump armor, or Piston Lube on Titan models) that keeps the packings lubricated. The inlet and outlet valves, a seat and a ball each, open and close with every stroke.
- Packings worn: leaking at the wet cup, paint in the wet cup, or pressure that will not hold.
- Piston rod scored: the rod must be smooth, because a scored rod destroys new packings.
- Inlet or outlet valves worn: pulsing, loss of pressure, or a pump that will not prime.
Pump parts are model-specific, so we do not name internals here. Open the piston rods and piston assemblies page for rods and the repacking kits and pump service kits page for packing kits, then match your model.
Filters
Airless systems usually have a suction or inlet strainer, a pump or manifold filter and a gun filter. Titan's manuals say to check the gun screen and the pump outlet filter daily, and to clean the filter after every use, more often with thick material. Partly blocked filters cause pressure loss, pulsing and spitting.
Manifold filters on the site include the 730-067 60 mesh, which Behr names for interior latex as an example. The right mesh depends on the coating, so check its data sheet.
Hose, return line and grounding
The hose carries paint to the gun at full pressure. Use only conductive or grounded airless hose rated at or above the sprayer's maximum pressure. Titan's manuals say a hose can leak from wear, kinking and abuse. Inspect it before each use, replace a damaged hose and never repair one. The 316-505 is a 50 ft spray hose listed on the hoses page.
On many electric sprayers a return hose runs from the pump back toward the container. When priming or flushing, the Impact 440 manual puts the return hose in a grounded metal waste container. The site lists return hoses including the 704-263A and the 800-903. They fit different suction sets, so find yours on your sprayer's diagram.
Gun, guard and tip
The gun has a trigger lock, which you engage whenever you are not spraying and test to make sure it works. The tip guard sits over the tip so a finger cannot reach the stream, and Titan's manuals say never to spray without it. The tip's orifice controls how much material is delivered and the fan angle controls the width of the pattern. A worn tip has a wider orifice: pressure falls, the pattern gets coarse or streaky and more paint is used.
The tip sits against a seat and seal. When the seal is damaged you get leaks around the tip. The 651-020 tip seal and the 661-027 tip guard are listed on the seals and tip guards pages, and the RX-Pro 0538022 gun is on the guns, hoses and tip kits page. Guns and tips are also grouped on spray guns, tips and accessories.
Where each part sits on the diagram
The system map
| Part | Job | Wear sign | Where to look |
|---|---|---|---|
| Inlet screen and siphon tube | Strains paint going into the pump | Blocked screen: pump will not prime or hold pressure | Titan Filters |
| Piston rod, packings, valves | Moves and seals the paint | Leaks at the wet cup, pulsing, pressure loss | Piston Rods, Repacking Kits |
| Manifold and gun filters | Catch debris before the gun and tip | Pressure loss, pulsing, spitting | Titan Filters |
| Hose and return hose | Carries paint under pressure | Leaks, kinks, wear: replace, never repair | Titan Hoses |
| Gun, guard, tip, seal | Controls the trigger, the fan and the flow | Coarse pattern, wider orifice, leaks at the tip | Tip Guards, Seals |
For your own sprayer, start from the model's diagram on the Order by Parts Diagram page, find the numbered callout and add that part.
If you are not sure which part belongs to your model, call (713) 931-0006 with the model and serial number. Manuals are on our manuals page.
Parts named in this tour:
The Short Version
Paint passes the inlet screen, pump, filters, hose, gun, guard and tip in that order, and the sign of trouble tells you where to look. Check the cheap, easy parts first, the screen, the filters and the tip, before you suspect the pump.
Need to match a part to your sprayer?
Call (713) 931-0006 with the model and serial number and our parts team will help confirm the part.
(713) 931-0006Order by Parts Diagram