The Grundfos STN-4.0 B is a high-performance brass shower pump featuring a universal head and twin impellers, engineered to the highest standards for powerful and dependable operation.
Designed to boost either hot or cold water supplies, this versatile pump is suitable for single showers, multiple outlets, or whole-house applications. It can be installed where outlets are positioned above or below the cold water tank, offering flexibility across a wide range of systems. Delivering pressures of up to 4 bar, it is ideal for domestic, commercial, and light industrial use.
As a continuously rated regenerative pump, the STN-4.0 B is highly effective at overcoming air pockets within the system. This makes it particularly well-suited to installations with complex pipework, including multiple bends and elbows, ensuring consistent and reliable performance.
Constructed from heavy-duty brass, including brass impellers and precision-machined components, the pump provides exceptional durability and long-term reliability. It is supplied with stainless steel, flexible braided connection hoses for enhanced corrosion resistance and strength.
For quieter operation, the pump is fitted with anti-vibration feet and long-life silicon carbide seals, helping to minimise noise during use. Integrated thermal protection automatically shuts off the motor in the event of overheating, offering added safety and peace of mind.
Fully WRAS approved, the STN-4.0 B has undergone extensive mechanical and water quality testing, ensuring compliance with industry standards and dependable performance.
Key Features :
- Premium brass construction with universal head and twin impellers
- Delivers water pressure up to 4 bar
- Suitable for domestic, commercial, and light industrial applications
- Ideal for single showers, multiple outlets, or whole-house boosting
- Can be installed above or below the cold water tank
- Continuously rated regenerative pump to overcome air pockets
- Brass impellers and machined components for enhanced durability
- Supplied with corrosion-resistant stainless steel braided hoses
- Anti-vibration feet for quieter operation
- Long-life silicon carbide seals
- Built-in thermal protection for motor safety
- WRAS approved for quality and compliance
