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  • Forged Aluminum Large Diameter Layflat Hose Coupling -- 8 Inch, 10 Inch, 12 Inch and Larger

    The large-diameter fire hose couplings (typically referring to hoses with 8 inch to 16 inch) lies in solving the water supply challenges of "long-distance, high-flow, and continuous" operations in modern large-scale firefighting. Ordinary small-diameter hoses cannot deliver massive flows over long distances, whereas large-diameter hoses serve as the "main artery" of long-distance water supply systems, capable of delivering water at high flow rates from natural water sources or municipal networks several kilometers away to the front line of the fire.

    Qruck specializes in producing Large Diameter Hose Aluminum Coupling from 8'' to 16'' for Firefighting, Municipal Emergency, Long-distance Water Supply, and Drainage. And our couplings own high working pressure, durability, long service life, and provide safe and reliable connections for large diameter hose and pump, which meets the requirements of long-distance water transportation and high flow water transportation.

    Qruck mainly carries Aluminum large low pressure casting, Aluminum heavy duty forging, and CNC machining for production. Our production range includes VIC Grooved Hose Coupling, Storz Coupling, Flange Coupling, Multi-lug Coupling and others.

    Qruck factory heavy duty forging and casting equipment
    • Fire Layflat Hose V-Grooved Coupling, including Normal V-Grooved Coupling, Flange V-Grooved Coupling , Multi-lug V-Grooved Coupling
    • Fire Layflat Hose Storz Coupling , including Normal Storz Coupling, Flange Storz Coupling, Multi-Lug Storz Coupling, Four Lug Storz Coupling
      • Qruck Forged Aluminum Large Diameter Hose Couplings product details

      1. Long-Distance, High-Flow Water Supply for Major and Catastrophic Fires

      This is its core application. In fires involving petrochemical facilities, large urban complexes, and long-span industrial buildings, the fire scene requires enormous volumes of cooling water, and adequate water sources are often unavailable nearby. Large-diameter hoses (e.g., 400 mm) serve as long-distance water supply trunk lines, drawing water from open sources such as rivers and lakes. The maximum water delivery distance can reach 6 kilometers, with a peak flow rate of 1,440 cubic meters per hour, ensuring uninterrupted water supply for multiple mobile water monitors and elevated jet fire trucks simultaneously. This resolves the dilemma of "thirsting for water" at large fire scenes.

      Large diameter layflat hose application in field firefighting and water supply

      2. Urban Flood Drainage and Drought-Relief Water Conveyance

      Large-diameter hoses are also a primary force in emergency rescue drainage. For example, 300 mm hoses are specifically used with drainage fire trucks; during urban waterlogging, they serve as high-flow drainage lines to rapidly pump accumulated water to safe areas. Meanwhile, when distant water transfer is needed for drought relief or sudden emergencies, this long-distance water supply system can also be repurposed as a water conveyance tool, serving a dual function of water supply and drainage.

      3. High-Flow Trunk Line Replenishment in Specific Scenarios

      In fire scenes where long water supply trunk lines must be established, apart from the 65 mm attack hoses at the very front, 80 mm hoses are typically used for the rear trunk lines. In more extreme long-distance water supply systems, however, large-diameter hoses of 250 mm and above must be relied upon as the main water conveyance lines to ensure end-of-line pressure and flow with extremely low friction loss.

      Qruck CNC machining process and finished couplings

      FAQ

      What sizes of large diameter hose couplings does Qruck produce?

      Qruck specializes in producing Large Diameter Hose Aluminum Coupling from 8'' to 16'', covering 8 inch, 10 inch, 12 inch and larger sizes for firefighting, municipal emergency, and long-distance water supply.

      What is the maximum water delivery distance and flow rate?

      When used as long-distance water supply trunk lines, large-diameter hoses can reach a maximum water delivery distance of 6 kilometers with a peak flow rate of 1,440 cubic meters per hour, ensuring uninterrupted water supply.

      Are the couplings suitable for both water supply and drainage?

      Yes. Beyond firefighting trunk lines, large-diameter hoses support urban flood drainage and drought-relief water conveyance, serving a dual function of water supply and drainage.

      What safety clothing fabric should crews use during long-distance operations?

      For long-distance trunk line operations involving heat, water, and heavy equipment, personnel are advised to wear flame-retardant Safety Clothing fabric with high tear strength and water resistance to ensure protection during continuous supply operations.