Eaton Hansen HK-series interchange hydraulic fitting socket with valve is a general purpose industrial interchange coupling. Offered in brass for excellent corrosion resistance in rugged applications where stainless steel is unacceptable. The HK-series features a ball latch mechanism with automatic self-sealing poppet valves. Brass construction with stainless steel springs for greater corrosion resistance and fluid compatibility. Meets dimensional requirements to ISO standard 7241-1 Series B. Self-sealing poppet valves provide excellent high and low pressure sealing. Applications and markets: agriculture, hydraulic tool, general industry, construction, fluid transfer, chemical, oil and gas, transportation, food and beverage, trucks, nuclear. Measures 1-9/64-inches diameter by 2-17/64-inches length.