The Aeroquip HK Series 1-3/4" Carbon Steel Quick Disconnect Coupling features a quick disconnect mechanism that allows for fast and easy connection and disconnection of fluid lines. Its self-sealing poppet valve design provides excellent high and low-pressure sealing, allowing for high flow rates. Constructed from carbon steel, this coupling is highly durable, strong and resistant to corrosion and wear. It is ideal for a variety of applications. FleetPride is your First Click in Heavy Duty®.