The Hydra X 4540 runs up to 6 guns on 4.0 gpm at up to 4500 psi. Titan's maximum tip falls as guns are added: 0.067 in. with one gun, 0.043 in. with two, 0.035 in. with three, 0.031 in. with four and 0.029 in. with five. These are maximums, not recommendations. Match the tip to the coating and check the manual for six guns.
A multi-gun crew has a planning problem a single-gun painter never meets: every gun draws from the same pump. Titan's answer is a tip table that caps the orifice size as the gun count goes up. If you are quoting a roof with four guns, that table tells you more about the job than the horsepower of the engine. Here is the table, what it does and does not say, and what the setup and the parts list look like.
The Hydra X 4540 at a glance
The 4540 is the lower-pressure, higher-flow member of the Hydra X pair. Titan rates it at up to 4500 psi (31.0 MPa) and 4.0 gpm (15.1 L/min), with up to six guns. A Honda GX390 engine with electric start and a low-oil alert drives the hydraulic pump, the hydraulic reservoir holds 6 gal, and the unit rolls on 12 in. pneumatic tires. The fluid section uses a 5 in. slow-stroking piston.
Titan's launch release names asphalt emulsion and acrylic roof coatings for the 4540. The wider Hydra X series is listed for roofing, waterproofing, protective coatings, epoxies and mastics.
Maximum tip size by gun count
Hydra X 4540 maximum tip size by number of guns
| Guns | Largest tip Titan lists |
|---|---|
| 1 | 0.067 in. |
| 2 | 0.043 in. |
| 3 | 0.035 in. |
| 4 | 0.031 in. |
| 5 | 0.029 in. |
| 6 | Not in the figures we have; see the Hydra X manual |
Figures are Titan's maximums for the 4540. The table is a ceiling, not a recommended setup.
The sizes fall quickly at first: going from one gun to two cuts the largest tip from 0.067 in. to 0.043 in., while the later steps are smaller. The reason is that the pump's flow is shared between the guns. A tip passes material according to its orifice size, so adding a gun while keeping a large tip asks the pump for more than 4.0 gpm in total.
Read the table as an upper limit. Thick coatings, a long hose run or a worn pump all argue for a smaller tip than the table allows, and the coating maker's data sheet sets the tip and pressure that the coating itself needs. The data sheet and your manual, not this table, decide the tip for a given coating.
Setting up a multi-gun job
Titan's Hydra X manual covers the points that matter on a multi-gun set-up. These are the ones worth checking against your own copy before the first day on a roof:
Set the tip for the gun count
Look up the gun count in the table and choose a tip at or below that size. Then check the coating's data sheet.
Connect a manifold kit to the single gun outlet
Titan's manual has you connect a manifold kit to the sprayer's single gun outlet. We do not list a manifold kit by number for the Hydra X, so ask us if you need one.
Plug every unused outlet
Titan's manual says to plug any manifold outlet you are not using.
Check the hose and gun ratings
Every accessory must meet or exceed the 4500 psi maximum. The manual also requires at least 50 ft of nylon airless spray hose to be attached.
Ground the sprayer and strain the paint
The manual says to ground the sprayer and strain the coating through nylon strainers before it goes into the pump.
Tips, guns and tip care
With several guns on one machine, a tip that wears early shows up as one gun that looks different from the others. A worn tip has a wider orifice, so pressure falls, the pattern turns coarse or streaky and more material is used. Replace tips when the pattern degrades rather than turning up the pressure to cover for them. Titan's manual says to keep the tip 10 to 12 in. (25 to 30 cm) from the surface and never to spray without a tip guard.
The Hydra X accessories page lists the small consumables a gun crew goes through:
- 661-020 tip seat and seal kit (5 pack).
- 661-027 tip guard.
- 0538070 RX-APEX non-filtered airless gun and 550-270 S-7 airless gun.
- 0089957 gun filter, coarse, 2-pack.
The hose entries on that page name their pressure ratings. 2389428 and 290685 are named 4500 psi, which meets the 4540's maximum. Replace any hose with a notch, bulge or damage rather than repairing it, and note that Titan recommends replacing high-pressure hose after six years.
The six 4540 model numbers
Titan sells the 4540 in six configurations. The base number is 2412275. A trailing X is the California version and K is the Kohler engine, per Titan's configuration list. The 2424560 numbers are the same three with 250 ft of GHT hose.
Hydra X 4540 model numbers
| Model number | Version | Hose | On the site |
|---|---|---|---|
| 2412275 | 49 States | Bare unit | Listed as 02412275 |
| 2412275X | California | Bare unit | Listed |
| 2412275K | Kohler engine | Bare unit | Not listed under this number |
| 2424560 | 49 States | 250 ft GHT hose | Listed |
| 2424560X | California | 250 ft GHT hose | Listed |
| 2424560K | Kohler engine | 250 ft GHT hose | Not listed under this number |
Confirm the suffix, engine and region on (713) 931-0006 before you order a complete unit.
Keeping parts on hand
The 4540 fluid section diagram is the page to know. It lists the V-packing (0533651, with a leather version at 0533652), spring packing 0533674, male and female glands, 0533683 inlet ball seat and the balls. The 4540 numbers differ from the 7230's, so order from this page and not the 7230 one. Titan's manual lists fluid section faults by symptom, so replace the part the symptom points to rather than stocking everything.
Fluid section service kits for the 4540 are 02414183 (minor), 02414180 (major) and 02420804 (minor, PTFE). We do not list what is in each kit, so confirm the contents by phone.
Two items go through a multi-gun crew's hands every day. Coolflo is the only hydraulic fluid Titan's manual allows (430-361 by the gallon), and the packing oil reservoir takes Piston Lube (314-480), filled half full and not more. The Main Assembly II page lists the pressure gauge 2427990, the siphon tube assembly 2402315A and the 945-600A bleed valve.
4540 units and the tips and gun parts discussed above:
−29%
−23%
The Short Version
The 4540 takes up to six guns, but the table is a ceiling that drops from 0.067 in. with one gun to 0.029 in. with five. Pick the tip from your coating and stay under the ceiling, use hose and guns rated at 4500 psi or more, plug unused outlets, and keep tip seat kits and gun filters on the truck.
Setting up a multi-gun job?
Call (713) 931-0006 with your model, serial number and gun count and our parts team will help match tips, gun parts and fluid section parts.
(713) 931-0006Order by Parts Diagram