The McDonnell & Miller 25-A Make-Up Water Feeder (Part Number: 126800) is a float-operated device engineered for boiler receiver tanks. It features proportional feed action, ensuring precise water level maintenance within the boiler system. The soft seat design provides a positive seal, preventing leaks and maintaining system integrity. This feeder is designed to operate with a maximum water supply pressure of 100 psi (7 kg/cm²) and a maximum vessel pressure of 35 psi. It accommodates a maximum inlet water temperature of 120°F (49°C). The unit is equipped with 1″ NPT threaded connections for both supply and equalizing lines, facilitating straightforward installation. Its float-operated mechanism functions independently of electrical power, enhancing reliability in maintaining appropriate water levels within the boiler.
Associated Parts:
- Compatible with McDonnell & Miller low-water cut-offs like Series 47 and 67.
- Replacement gaskets, valves, and float kits.
Applications:
Ideal for use in residential, commercial, and industrial boiler systems to prevent low-water conditions and reduce manual water addition.
End Users:
HVAC professionals, boiler technicians, and facility managers use this feeder to ensure safe, efficient boiler operation in environments like hospitals, factories, and multi-unit residential buildings.
We ship this product worldwide! Delivery is normally stock.
Request a Quote now or call us at 1-800-755-2883 for expert assistance.
| Manufacturer | McDonnell & Miller |
| Model | 25-A |
| Part Number | 126800 |
| Application | Boiler Receiver Tanks |
| Function | Float-Operated Make-Up Water Feeder |
| Feed Action | Proportional |
| Maximum Water Supply Pressure | 100 psi (7 kg/cm²) |
| Maximum Vessel Pressure | 35 psi (2.5 kg/cm²) |
| Maximum Inlet Water Temperature | 120°F (49°C) |
| Connection Size | 1″ NPT (Supply and Equalizing) |
| Seal Type | Soft Seat |
| Operation | Mechanical, Float-Operated |
| Dimensions (Width) | 12-1/4″ |
| Weight | Approximately 37.5 lbs |