HITACHI WM-P250XX2 Constant Pressure Automatic Water Pump, 1-Inch, 250W

Constant Pressure Automatic Water Pump HITACHI WM-P250XX2 Size 1 Inch (150 Watts)
A high-quality Constant Pressure Automatic Water Pump from HITACHI, designed to enhance water usage in residences and office buildings. The unit operates automatically according to the opening and closing of water taps, helping control water to flow continuously and efficiently. Driven by a 250W motor that delivers quiet and powerful performance, it can support simultaneous use of up to 5-6 taps, making it ideal for homes or buildings where water is used at multiple points at the same time. At its heart is the Life-Extending Pressure-Stabilized Unit, which controls the water flow rate in conjunction with a sealed nitrogen pressure tank that never requires gas refilling throughout its service life, truly delivering strong, smooth, and consistent water pressure to every floor and faucet. For safety, this water pump comes equipped with a Thermal Relay safety system—a motor temperature sensor that immediately shuts off operation when abnormally high heat is detected, decisively preventing internal component deformation and motor burnout. The inlet and outlet piping structure uses a diameter of 25 mm (1 inch) and is made from premium, corrosion-resistant materials. The unit is exceptionally energy-efficient with the highest 5-star Level 5 Energy Saving rating and is certified under the Thai Industrial Standards (TIS 1548-2551). Ensure long-term reliability with a 10-year motor warranty and an 18-month warranty on other spare parts.

Features
- Operates with a constant pressure automatic water pump system, driven by a 250-watt motor, providing consistent water pressure throughout the entire house
- Operates automatically based on tap opening and closing sensors, helping water flow strongly and continuously with efficiency
- Innovative Life-Extending Pressure-Stabilized Unit helps regulate water flow rate and generate continuous discharge pressure
- Factory-installed nitrogen pressure tank helps maintain stable water pressure without needing gas refills throughout its service life
- Maximum safety with a Thermal Relay automatic cutoff system, preventing the motor from overheating and protecting internal parts from thermal deformation
- Delivers high and long-distance water delivery performance, with a maximum Suction Lift of 8 meters and a maximum Discharge Head of up to 18 meters
- Provides excellent water delivery volume at a rated 51 liters per minute, reaching a Capacity MAX of up to 61 liters per minute
- High-precision mechanical pressure switch, factory-calibrated to turn ON at 2.0 kg/cm² and turn OFF at 2.4 kg/cm².
- Standard universal pipe size for both suction pipe and discharge pipe rated at 25 mm or 1 inch (1″)
- Capacity to support simultaneous tap usage (average per point) of up to 5-6 points without pressure drop
- Certified for product safety according to Thai Industrial Standards TIS 1548-2551 from the Ministry of Industry
- Guaranteed quality backed by a 10-year motor structure warranty and an 18-month warranty on other spare parts
- Certified for maximum energy savings with the highest-level Energy Saving Label No. 5 (5 stars), helping to reduce household expenses

Applications
- Residential plumbing systems: suitable for installation in detached houses, townhomes, commercial buildings, or medium-sized office buildings with simultaneous multi-point water usage
- Clean water supply for domestic use: suitable for pumping and delivering clean water from above-ground storage tanks to sanitary systems, washing machines, showers, and general household taps

Specifications
- Brand: HITACHI
- Product Model: WM-P250XX2
- Product Type: Constant Pressure Automatic Water Pump
- Motor Power: 250 Watts (Watt)
- Maximum Suction Lift: 8 m
- Maximum Discharge Head: 18 m
- Maximum Capacity: 51 - MAX 61 liters per minute (L/min)
- Pressure Switch Rating: ON 2.0 / OFF 2.4 (kg/cm²)
- Suction / Discharge Pipe Size: 25 mm (1 inch / 1″)
- Tap Support Capacity: 5-6 points simultaneously (average per point)
- Motor Protection System: Thermal Relay (overheat cutout switch)
- Pressure Tank: Nitrogen gas-filled (maintenance-free, no need to refill throughout its lifespan)
- Energy Efficiency Rating: 5 Stars
- Certification Standard: TIS 1548-2551