Description

DRYRISER INLET BREECHING (2-WAY / 4-WAY)

Product Overview

The DRYRISER INLET BREECHING is a critical fire safety component designed to provide a secure and reliable connection point for the fire brigade to charge a building's dry riser system with water. Located at ground level, typically on the exterior of a building or within a dedicated dry riser cabinet, it enables rapid and efficient delivery of water to all floors, allowing firefighters to combat fires effectively from within the structure.

Our Dry Riser Inlet Breeching units are engineered for uncompromising performance, durability, and compliance with the most stringent fire safety standards.

Key Features

• Robust Construction: Manufactured from high-grade materials such as gunmetal (LG2) or brass (CZ122), offering exceptional resistance to corrosion, wear, and impact, ensuring a long service life in diverse environmental conditions.
• Standardised Connections: Equipped with either two or four 2.5" (63.5mm) instantaneous male non-return inlets conforming to BS 336:2010. These provide quick and secure coupling for fire brigade hoses.
• Non-Return Valves: Each inlet incorporates a high-performance, spring-loaded non-return valve to prevent backflow of water, ensuring unidirectional flow into the dry riser system and maintaining system integrity.
• Drain Valve: Includes a 1" (25mm) BSP drain valve to facilitate system testing, maintenance, and to prevent frost damage by allowing complete draining of the breeching unit.
• System Outlet: Features a single 4" (100mm) PN16 flanged outlet or threaded connection for secure and direct attachment to the building's main dry riser pipework.
• Pressure Rating: Designed to withstand high operating pressures, typically with a working pressure of 17 Bar and a test pressure of 20 Bar, ensuring reliability during critical fire-fighting operations.
• Blank Caps & Chains: Supplied with matching BS 336 blank caps and chains for each inlet, protecting the connections from debris, tampering, and ensuring readiness for use.
• Configurability: Available in common configurations:
  • 2-Way Inlet Breeching: Ideal for standard installations.
  • 4-Way Inlet Breeching: Provides increased water input capacity for larger or taller buildings.
• Compliance: Fully compliant with BS 5041: Part 1:2020 (Fire hydrant systems and equipment – Part 1: Inlet breeching for dry riser systems – Specification) and other relevant British and European standards.
• Installation Versatility: Suitable for both surface-mounted installations (often within a recessed or surface-mounted dry riser cabinet) and bespoke architectural integrations.

Benefits

• Enhanced Fire Safety: Provides a critical lifeline for firefighters, enabling swift and effective water delivery to multiple levels of a building.
• Rapid Deployment: Standardised connections and robust design allow for quick and hassle-free connection by fire brigade personnel, saving precious time in an emergency.
• Reliability & Durability: Constructed from premium materials to ensure long-term, maintenance-free operation and resilience against harsh weather and environmental factors.
• Regulatory Compliance: Meets all necessary British Standards, providing peace of mind for building owners, facility managers, and specifiers regarding legal and safety requirements.
• System Integrity: Non-return valves prevent water hammer and backflow, protecting the wider system and ensuring efficient operation.
• Ease of Maintenance: Integrated drain valve simplifies periodic testing and winterization procedures.

Technical Specifications

• Material: Gunmetal (LG2 to BS EN 1982) or Brass (CZ122 to BS EN 1982)
• Inlets:
  • Quantity: 2-way or 4-way
  • Size: 2.5" (63.5mm)
  • Type: BS 336 Instantaneous Male Coupling
  • Valves: Spring-loaded Non-Return (integral to each inlet)
• Outlet:
  • Size: 4" (100mm)
  • Type: PN16 Flanged (drilled to BS EN 1092-2) or Female BSP Threaded
• Drain Valve: 1" (25mm) BSP plug or ball valve
• Working Pressure: 17 Bar (250 psi)
• Test Pressure: 20 Bar (300 psi)
• Finish: Natural gunmetal/brass, polished, or powder-coated (e.g., Red RAL 3000 for cabinet applications)
• Accessories Included: BS 336 Blank Caps with Chains
• Standards: BS 5041: Part 1:2020, BS 336:2010

Applications

• High-rise commercial and residential buildings
• Multi-story car parks
• Large industrial complexes and warehouses
• Shopping centres and retail parks
• Educational institutions and hospitals
• Any building requiring a dry riser fire suppression system by regulation

Installation & Maintenance

Installation must be carried out by qualified and competent personnel in accordance with local regulations and British Standards (BS 5306 Part 1). Regular inspection, testing, and maintenance are crucial to ensure the dry riser system remains fully operational and compliant, as per BS 9990:2015.

Ordering Information

For detailed specifications, custom configurations, or to request a quote, please contact our sales team. We offer expert advice and support to ensure you select the correct Dry Riser Inlet Breeching for your specific project requirements.