Connect large-diameter hose in seconds—no threading, no tools, no wasted time. The Hy-Conn HP4NH5ST allows rapid transition from 4” NH hydrants or pump discharges to 5” Storz LDH lines. Designed for aggressive water movement operations, this adapter combines strength, speed, and simplicity.

Machined from high-grade 6061-T6 aluminum and finished with black hard anodizing and Chemfilm, it’s built to perform in the most demanding conditions.

Key Features

• Instant Connection – No threading required—just push, lock, and go
• Large-Diameter Flow – Adapts 4" NH outlet to 5" Storz LDH
• Heavy-Duty Build – 6061-T6 aluminum with corrosion-resistant finishes
• Fireground Rated – Withstands up to 250 PSI for high-volume operations
• Field-Proven Weight – 13 lbs 11 oz for stability under full-flow pressure

Specs