Product Description

Grundfos Amazon Universal 2 Bar Twin Negative Head Shower Pump

Model: 96787505 / STN-2.0 B

The Grundfos Amazon STN-2.0 B Universal 2 Bar Twin Negative Head Shower Pump is a premium automatic twin impeller shower booster pump designed specifically for negative head plumbing systems where the cold water storage tank is positioned below the shower outlet. In these installations, a specialist negative head pump is required to detect water demand automatically and deliver reliable water pressure, even when natural gravity flow is unavailable.

Part of the renowned Grundfos Amazon range, the STN-2.0 B is recognised for its exceptional build quality and dependable performance. Manufactured using heavy-duty brass impellers and precision-machined brass components, it delivers outstanding durability, smooth operation and reliable long-term performance.

Designed to boost both the hot and cold water supplies simultaneously, the STN-2.0 B provides a powerful 2.0 bar pressure increase, making it ideal for improving shower performance in gravity-fed negative head systems. Complete with intelligent automatic controls, anti-vibration feet and flexible hoses, it offers quiet operation and straightforward installation.

Grundfos Amazon STN-2.0 B Features

• Universal Twin Negative Head Shower Pump
• Model: STN-2.0 B
• Part Number: 96787505
• 2.0 Bar Pressure Rating
• Suitable for Negative Head Systems
• Twin Impeller Design
• Boosts Both Hot & Cold Water Supplies
• Heavy Duty Brass Impellers
• Precision Machined Brass Internal Components
• 230 Volt Power Supply
• 22mm Connections
• Centrifugal Pump Design
• Built-in Automatic Flow Switch
• Built-in Automatic Pressure Switch
• Anti-Vibration Feet
• Supplied with Flexible Hoses
• WRAS Approved
• CE Compliant
• 2 Year Manufacturer Warranty
• Grundfos Amazon Installation Guide
• Grundfos Amazon Pump Brochure

Key Features & Benefits

• Automatic Negative Head Operation – Designed specifically for installations where the cold water storage tank is below the shower outlet.
• Powerful 2 Bar Performance – Delivers strong, balanced water pressure for showers and domestic water systems.
• Twin Impeller Design – Simultaneously boosts both hot and cold water supplies for consistent water flow.
• Heavy Duty Brass Construction – Premium brass impellers and machined brass components ensure exceptional durability.
• Automatic Flow Detection – Integrated flow switch automatically starts the pump when water demand is detected.
• Automatic Pressure Control – Pressure switch maintains system pressure and automatically stops the pump after use.
• Quiet Smooth Operation – Anti-vibration feet minimise vibration and operating noise.
• WRAS Approved – Suitable for potable water systems and manufactured to high industry standards.

Technical Specification

• Model: STN-2.0 B
• Part Number: 96787505
• Brand: Grundfos
• Product Type: Universal Twin Shower Pump
• System Type: Negative Head
• Pressure Rating: 2.0 Bar
• Power Supply: 230 Volt
• Connections: 22mm
• Pump Type: Centrifugal
• Approvals: WRAS Approved & CE Compliant
• Warranty: 2 Years

What’s Included?

• 1 × Grundfos Amazon STN-2.0 B Universal Twin Shower Pump
• 4 × Manufacturer Supplied Flexible Hoses
• Built-in Anti-Vibration Feet
• Installation Instructions

Ideal For

• Negative head plumbing systems
• Gravity-fed shower systems
• Boosting both hot and cold water supplies
• Domestic shower installations
• Homes with low water pressure
• Replacement shower pumps
• Professional plumbing installations
• Homes where the cold water tank is below the shower outlet

Why Choose the Grundfos Amazon STN-2.0 B?

The Grundfos Amazon STN-2.0 B has been specifically developed for negative head plumbing systems where conventional shower pumps cannot operate effectively. Its intelligent automatic controls detect water demand without relying on gravity flow, ensuring reliable water pressure whenever it is needed.

With premium brass construction, twin impeller technology and the trusted engineering quality associated with Grundfos, the STN-2.0 B provides dependable performance, quiet operation and long-lasting reliability for demanding domestic shower installations.

Why Buy from SNH Tradecentre?

• Competitive prices on Grundfos shower pumps
• Large stock availability
• Nationwide delivery available
• Expert plumbing and heating advice
• Trade and public customers welcome
• Trusted UK plumbing supplier
• Collection available from our Kent trade counter