Wilo PB-400EA Solar Booster Pump (Pumpmat), 1.8 Bar, 4 m³/h, 0.4 kW

Hot Water Booster Pump

This is an automatic hot water booster pump installed on the hot water line to pressurize the hot water—typically used because solar energy systems deliver hot water without pressure, preventing hot and cold water from being mixed at the desired ratio. It boosts the pressure of the hot water.

It operates reliably even in the hottest regions of Türkiye.

Brings your hot water to the same pressure as your cold mains water. Provides comfortable use.

You receive your hot water at a consistently steady pressure, without interrupted flow or noticeable pump cycling.

Simply connect it to the hot water line and plug it in — no adjustment or maintenance required.

Product Applications

Where mains pressure is insufficient for:

• Gas water heater
• Electric water heater
• Electric heater
• Shower
• Pressurizing the inlet circuits of appliances such as washing machines and dishwashers

Product Dimensions

• Width: 280 mm
• Height: 250 mm
• Length: 280 mm
• Weight: 12.5 kg
• Max. Fluid Temperature: 80 °C

What Is the Wilo PB-400EA Solar Booster Pump (Pumpmat)?

Inline single-stage booster pump. Automatic operation thanks to an integrated flow control system and pressure chamber. SEA model with integrated pressure switch. Capable of pumping fluids at high delivery temperatures. CE compliant. Pre-fitted capacitor and motor protection switch. Connection cable and plug are not included in the scope of delivery. Suitable for domestic applications with roof tanks, for both suction and inlet operation.

Wilo PB-400EA Solar Booster Pump (Pumpmat) Applications

Used in heating systems, hot water systems, commercial building hot water systems, and cooling and air-conditioning systems.

Pressure controllers are used not only for hot water but also for pressurizing water supply where the flow arrives without pressure.

Permitted Fluids	Motor	Materials
Max. Fluid Temperature T: 80 °C	Phase: 1~	Pump Casing: Cast Iron
Min. Ambient Temperature T: 5 °C		Impeller: Noryl – Mechanical Seal: Carbon Ceramic
Max. Ambient Temperature T: 40 °C		Protection Class: IP 44

Model	Motor Power P2(kW)	Connection Diameter	Product Code
PB-400EA	0.4	1" - 1 1/4"	4400379