90ISCS4025F – 2-1/2″ Single Clapper Siamese Connection Bottom Outlet

Dixon Valve 90ISCS4025F – 2-1/2″ Single Clapper Siamese Connection Bottom Outlet

The Dixon 90ISCS4025F Single Clapper Siamese Connection is a durable fire department connection designed to supplement water supply to sprinkler and standpipe systems. Featuring a 90-degree bottom outlet configuration, this fitting allows efficient connection in tight or below-grade installations while maintaining a clean, unobstructed waterway. The single swing clapper design prevents backflow and ensures reliable performance during emergency use. Constructed from rugged cast brass, this connection is built to withstand demanding fire protection environments and provide long-term corrosion resistance.

Features

• Manufacturer: Dixon Valve
• Part Number: 90ISCS4025F
• Material: Cast brass
• Connection Type: Siamese fire department connection (FDC)
• Inlet Size: (2) 2-1/2″ female NST (NH) swivel inlets
• Outlet Size: 4″ female NPT bottom outlet
• Design: Single clapper with 90-degree bottom outlet
• Maximum Pressure: 250 PSI
• Flow Capacity: Supports 500 GPM total (250 GPM per inlet)
• Function: Prevents backflow while allowing dual hose line input
• Application: Used as an auxiliary water supply connection for fire protection systems
• Additional Features: Corrosion-resistant construction, unobstructed waterway design

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