Part 451-112 is a replacement spring used in various PowrTex and PowrTwin sprayer models. This spring provides critical tension and return force for mechanical components such as triggers, valves, or pump assemblies. When worn, stretched, or broken, it can cause improper function, loss of pressure, or component misalignment. Replacing it with this genuine spring restores proper mechanical operation and ensures reliable performance.
| Part Number | 451-112 |
|---|---|
| Part Description | Replacement Spring |
| Brand | PowrTex / PowrTwin |
| Fits | Multiple PowrTex & PowrTwin models (see compatibility) |
| Condition | New |
The 451-112 spring is a genuine replacement component used across multiple PowrTex and PowrTwin sprayer models. Springs play a critical role in the mechanical operation of sprayers—providing tension for trigger return, valve actuation, pump components, and other moving parts. Proper spring tension ensures consistent performance, reliable engagement, and smooth operation.
Over time, springs can weaken, stretch, or break due to metal fatigue, corrosion, or repeated stress cycles. A worn or broken spring may cause components to fail to return to their proper position, resulting in poor spray performance, leaks, or operational issues. Replacing it with this OEM spring restores original tension and mechanical function.
| Tension & return force | Provides the force needed to return components to their starting position |
|---|---|
| Component engagement | Ensures proper contact and pressure between moving parts |
| Shock absorption | Helps dampen vibration and sudden movements in mechanical systems |
| Position holding | Maintains components in the correct position during operation |
| Broken spring | Visible fracture or separation of the spring coil |
|---|---|
| Stretched / weakened | Spring appears longer than original or lacks tension |
| Corrosion | Rust or pitting that compromises spring integrity |
| Component misalignment | Parts don't return to proper position or feel loose |
| Unusual operation | Trigger, valve, or mechanism doesn't function smoothly |
Spring 451-112 is compatible with the following PowrTex and PowrTwin sprayer models. Always verify the specific application and location of the spring in your unit using the correct parts diagram.
| Brand | Model |
|---|---|
| PowrTex | 6900SF |
| PowrTex | 12000SV (0528919D) |
| PowrTex | 6900SF |
| PowrTex | 12000SV |
| PowrTex | 6900 |
| PowrTwin | 12000 GHD |
| PowrTwin | 12000 XLT DI |
| PowrTwin | 12000 Plus DI |
| PowrTwin | 12000 Plus DI (service) |
| PowrTwin | 6900 XLT DI |
When replacing a spring, it's good practice to inspect the components it interacts with for wear or damage.
Worn pivots or contact points can affect spring performance and should be inspected.
Springs often work with valves; check valve seats and seals for wear.
These secure the spring in place and can wear or fall out over time.
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