4 in. Storz x 4 in. NST Hydra Storz Adapter is a capless fire hydrant storz connection designed to make connecting to hydrants quick and easy. This Storz hydrant converter's built-in butterfly vanes act as a check valve, allowing the one-way flow of water from the hydrant while protecting against unwanted use, vandalism, and damage.
Each 4 in. Storz x 4 in. NST Hydra Storz Adapter connects to a 4 in. NST pumper nozzle on a fire hydrant and discharges to 4 in. Storz fire hoses. The body of this Storz hydrant converter features interior and exterior rings made from forged and heat-treated (T-6) aircraft-grade 6061 aluminum, favored by manufacturers and firefighters for its superior strength and ease of extrusion.
The hydraulically-activated and spring-closed vanes on this 4 in. Storz x 4 in. NST Hydra Storz Adapter open when the hydrant begins flowing water. While this fire hydrant storz connection requires no cap for protection, a cap is needed to keep the adapter closed when using other hydrant ports.
The anodized coating on the exterior ring of this storz hydrant converter meets the Department of Defense's MIL-A-8625 specification, indicating that the aluminum provides added resistance to corrosion and abrasion.