What Kind of KTI Pump Do I Have? Identify by Remote Type
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KTI DC26-S 12V Single-Acting Pump
Power Up / Gravity Down β 2-button remote system
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KTI 394-21 4-Button Remote
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Quick Answer
Count the buttons on your wired remote and look at the labels. A 2-button remote means a 2-function system but doesn't tell you single vs. double-acting β you need to check the pump ports to tell those apart. A 3-button remote means Power Up / Power Down / Gravity Down. A 4-button remote means you have two separate hydraulic circuits.
The Remote-to-Pump Decision Tree
| Your Remote | Circuit Type | Key Detail |
|---|---|---|
| 2 buttons β Up & Down only | Single-Acting (Gravity Down) or Single Double-Acting (Power Down) | Remote looks identical for both β check pump ports to tell them apart |
| 3 buttons β Up, Power Down, Gravity Down | Power Up / Power Down / Gravity Down (3-function) | Pressing Gravity Down lowers without running the motor, saving battery |
| 4 buttons β Up, Down, Out, In | Dual Double-Acting (4-function) | Two independent circuits β typically bed + dovetail or two tilt functions |
| 4 buttons β Up, Down, Out, Grav Down | Double Acting Single Acting (4-function) | One powered circuit + one single-acting gravity-return circuit |
How to Tell Single-Acting from Double-Acting (2-Button Remotes)
If you have a 2-button remote, inspect the pump manifold directly. Look at the hydraulic port(s) on the manifold block:
| What You See on the Manifold | Your Pump Type |
|---|---|
| One hydraulic port labeled P | Single-Acting β Power Up / Gravity Down. Bed lifts under pressure and lowers via gravity. No motor power on the way down. |
| Two hydraulic ports labeled A and B | Single Double-Acting β Power Up / Power Down. Motor runs in both directions. Both raise and lower are powered. |
Confirm with the Model Number Tag
| Model Number | Type | Typical Remote |
|---|---|---|
| DC26, DC26-S, DC36 | Single-Acting β Power Up / Gravity Down | 2-button |
| DC-45598 series | Single-Acting β Power Up / Gravity Down | 2-button or 4-button |
| DC-45597 series | Single Double-Acting β Power Up / Power Down | 2-button |
| DC 4000 series | Dual Double-Acting | 4-button |
Why This Matters
Solenoid valves, load-holding valves, and wireless controllers are not interchangeable between single-acting and double-acting systems. Ordering the wrong part is the most common mistake. If your model tag is missing, call us at (517) 225-1991 β we can identify the unit from photos.
Frequently Asked Questions
My remote has 2 buttons but one is labeled "Stop" β what do I have?
Some newer KTI remotes add a Stop function as a safety feature but the hydraulic circuit is still 2-function. Check the pump ports to determine single vs. double-acting.
I bought a used trailer with no tag on the pump. How do I identify it?
Count the hydraulic hose connections at the manifold. One hose going to the cylinder = single-acting. Two hoses (one to the base, one to the rod end) = double-acting. You can also send us a photo at (517) 225-1991.
Does it matter which type I have when buying a wireless controller?
Yes β significantly. Each KWR model is matched to a specific circuit type. See our guide: Which KWR Wireless Controller Do I Need?
