

Part number 704-251 is a transducer assembly that monitors pressure within compatible sprayer systems and sends signals to the control board for accurate pressure regulation. This component ensures consistent spray performance and helps prevent pressure fluctuations. It is compatible with 440 i Airless Sprayer; 440i Airless Sprayer1; 640 i Airless Sprayer; Performer 640 i Airless Sprayer; and RentSpray Plus models. Replacing a faulty transducer restores precise pressure control and reliable operation.
| Part Number | 704-251 |
|---|---|
| Part Description | Transducer Assembly |
| Fits | 440 i Airless Sprayer; 440i Airless Sprayer1; 640 i Airless Sprayer; Performer 640 i Airless Sprayer; RentSpray Plus |
| Condition | New |
The 704-251 transducer assembly is an electronic component that continuously monitors fluid pressure within compatible airless sprayer systems. It converts pressure readings into electrical signals sent to the control board, allowing for precise pressure adjustment and regulation. This transducer is designed for use with 440 i Airless Sprayer; 440i Airless Sprayer1; 640 i Airless Sprayer; Performer 640 i Airless Sprayer; and RentSpray Plus models. Accurate pressure feedback is essential for maintaining consistent spray patterns, preventing surging, and protecting system components from overpressure. The transducer is typically located in the fluid path and is exposed to high-pressure coatings. Over time, transducers can fail due to diaphragm fatigue, electronic component failure, or contamination from debris. Symptoms of a faulty transducer include erratic pressure readings on the display, inability to maintain set pressure, surging during operation, or error codes on the control panel. A failed transducer can lead to poor finish quality and inefficient operation. Replacing a defective transducer with this genuine part restores accurate pressure monitoring and control. This ensures the sprayer operates smoothly and delivers consistent results. Installation requires careful handling to avoid damage to the sensing element and proper sealing to prevent leaks.
| Pressure monitoring | Continuously measures fluid pressure |
|---|---|
| Signal transmission | Sends pressure data to control board |
| Regulation feedback | Enables precise pressure adjustment |
| Erratic pressure display | Readings fluctuate or are incorrect |
|---|---|
| Pressure surging | Inconsistent output during spraying |
| Error codes | Control panel indicates transducer fault |
| Failure to maintain set pressure | Sprayer cannot hold desired pressure |
Part number 704-251 is compatible with the following sprayer models. Always verify using your equipment's serial number and parts manual.
| Brand / Series | Specific Models |
|---|---|
| i Series Airless | 440 i, 440i (1), 640 i |
| Performer | 640 i Airless Sprayer |
| RentSpray | Plus |
When replacing the transducer assembly, inspecting these associated components can help ensure a complete repair.
Receives transducer signals; check for related error codes.
Adjusts set pressure; verify proper operation.
Connects transducer; check for damaged pins or loose connections.