4" Aluminium Hose Unit - 4" NPT Connection, VITON Seals, Standard Handles

The S517B1101 Dry Disconnect Coupling provides a quick and safe connection for hose assemblies and loading arms to mobile and stationary tanks. Its standardized interface to STANAG 3756 with a bayonet coupling principle minimizes liquid loss during operation. Equipped with flat poppet valves, this coupling ensures secure sealing and efficient flow control. Ideal for applications including road and rail tankers, aviation refueling, ISO containers, offshore supply vessels, ship-to-shore, ship-to-ship, and ship-to-rig transfers.

• Self-locking quick connect/disconnect coupling with bayonet mechanism.
• Minimizes liquid loss during loading and unloading processes.
• Flat poppet valves for secure sealing and easy operation.
• Suitable for use in hazardous environments (ATEX zone 1).
• Versatile applications: road and rail tankers, offshore supply vessels, and ship-to-shore transfers.
• Durable aluminium construction with resistant Viton® O-rings.
• Certified for use with dangerous goods and approved by multiple regulatory bodies.

• Nominal Diameter: 4" (Ø 164 mm)
• Body Material: Aluminium
• Maximum Working Pressure: 10 bar
• Test Pressure: 15 bar
• Minimum Burst Pressure: 50 bar
• Connection: F 4" NPT female to ANSI B1.20.1
• O-Rings: Viton® (FPM/FKM), suitable for temperatures -20°C to +200°C
• Seal Material: None (flat seal omitted)
• Compliance: Meets European Pressure Equipment Directive category 2, ATEX zone 1, ADR, RID, and IMDG standards.