4" x 2-1/2" x 2-1/2" Straight Siamese Fire Department Connection (Brass, NST)

Product Overview

This 4" x 2-1/2" x 2-1/2" Straight Siamese Fire Department Connection (FDC) is a high-performance fitting designed to allow fire personnel to supply water from two hose lines into a single standpipe or sprinkler riser. The straight configuration makes it ideal for wall-mount or exposed applications where space efficiency is critical.

Key Features:

• Configuration: (2) 2-1/2" Female NST Inlets x 4" Male NPT Outlet
• Material: Heavy-duty cast brass body
• Inlets: Swivel adapters with pin lugs and internal clappers
• Outlet: 4" Male NPT or FIP
• Finish: Rough brass (chrome-plated optional)
• Pressure Rating: Up to 300 PSI working pressure
• Includes: Optional plugs and chains for inlet protection
• Certifications: UL Listed, FM Approved (varies by manufacturer)

Applications:

• Fire department pumper truck hose connections
• Standpipe and sprinkler riser systems
• Commercial buildings, high-rises, parking structures

Specifications:

• Body Material: Brass
• Inlets: (2) 2-1/2" Female NST (National Standard Thread)
• Outlet: 4" Male NPT
• Mounting: Straight (horizontal inline) configuration
• Accessories: Available with caps, chains, and check valves

This straight Siamese FDC provides a rugged and dependable solution for quickly boosting system pressure during firefighting operations. Trusted by professionals for reliability in critical applications.