Product Description

Grundfos Amazon 1.5 Bar Twin Shower Pump Positive

Model: 96787446 / STP-1.5 B

The Grundfos Amazon STP-1.5 B 1.5 Bar Twin Shower Pump is a premium positive head twin impeller booster pump designed to deliver smooth, reliable water pressure and exceptional durability. Often described as the “Rolls Royce” of Grundfos shower pumps, the Amazon range is manufactured using heavy-duty brass impellers and precision-machined brass components to provide outstanding performance for domestic plumbing systems.

Designed to simultaneously boost both hot and cold water supplies, the STP-1.5 B provides a consistent 1.5 bar pressure increase, making it ideal for improving shower performance and water flow in gravity-fed positive head systems. Intelligent automatic controls ensure the pump operates only when required, maintaining efficient and reliable performance.

Supplied with stainless steel flexible hoses, anti-vibration feet and backed by a comprehensive 5-year manufacturer warranty, the Grundfos Amazon STP-1.5 B delivers premium quality and long-term peace of mind.

Grundfos Amazon STP-1.5 B Features

• Twin Impeller Positive Head Shower Pump
• Model: STP-1.5 B
• Part Number: 96787446
• 1.5 Bar Pressure Rating
• 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 Stainless Steel Flexible Hoses
• WRAS Approved
• CE Compliant
• 5 Year Manufacturer Warranty
• Grundfos Amazon Installation Guide
• Grundfos Amazon Pump Brochure

Key Features & Benefits

• Balanced 1.5 Bar Performance – Delivers a noticeable improvement in shower pressure while maintaining smooth, controlled water flow.
• Twin Impeller Design – Simultaneously boosts both hot and cold water supplies for balanced system performance.
• Heavy Duty Brass Construction – Premium brass impellers and machined brass components ensure exceptional durability.
• Automatic Flow Activation – Built-in flow switch starts the pump automatically when water demand is detected.
• Automatic Pressure Control – Pressure switch automatically stops the pump and maintains system pressure after use.
• Quiet Smooth Operation – Anti-vibration feet reduce vibration and installation noise.
• Stainless Steel Flexible Hoses Included – Supplied ready for straightforward installation.
• 5 Year Manufacturer Warranty – Comprehensive warranty for added peace of mind.

Technical Specification

• Model: STP-1.5 B
• Part Number: 96787446
• Brand: Grundfos
• Product Type: Twin Shower Pump
• System Type: Positive Head
• Pressure Rating: 1.5 Bar
• Power Supply: 230 Volt
• Connections: 22mm
• Pump Type: Centrifugal
• Approvals: WRAS Approved & CE Compliant
• Warranty: 5 Years

What’s Included?

• 1 × Grundfos Amazon STP-1.5 B Twin Shower Pump
• 4 × Manufacturer Supplied Stainless Steel Flexible Hoses
• Built-in Anti-Vibration Feet
• Installation Instructions

Ideal For

• Positive head plumbing systems
• Gravity-fed hot and cold water systems
• Boosting shower performance
• Twin outlet water boosting
• Domestic bathrooms
• Open vented plumbing systems
• Improving low water pressure
• Professional plumbing installations

Why Choose the Grundfos Amazon STP-1.5 B?

The Grundfos Amazon STP-1.5 B is engineered for homeowners who want dependable water pressure, premium build quality and exceptionally quiet operation. Its heavy-duty brass construction, twin impeller design and intelligent automatic controls provide consistent water pressure while ensuring years of reliable service.

Backed by a comprehensive 5-year warranty and supplied with stainless steel flexible hoses, the STP-1.5 B offers outstanding value for homeowners looking to transform a compatible gravity-fed shower system into a powerful and enjoyable showering experience.

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