Female Half

The female half is the receptacle component of a hydraulic quick coupler system, designed with internal threads or locking mechanisms to securely mate with the male half. It contains the sealing surfaces and valve mechanisms that open when connected, allowing hydraulic fluid to flow through the coupling while preventing leakage when disconnected. This component is critical for maintaining system pressure integrity and enabling rapid connection/disconnection in hydraulic circuits. The female half is available in carbon steel, stainless steel, or brass, with a nominal diameter range of 6.3–25 mm per ISO 7241-1. Operating pressure is 1.0–1.6 MPa, burst pressure 3.2–4.0 MPa, and flow rate 12–120 L/min at 0.1 MPa pressure drop, per ISO 7241-1. Leakage rate is ≤0.05 mL/min at rated pressure with the mating half. Temperature range is -20–80°C depending on seal material. The standard material is 45# steel (zinc-plated for corrosion resistance) per GB/T 699, and seal material is NBR for mineral oils, with FKM for high temperatures per DIN 53504. Thread types are parallel BSP G1/4–G1 per ISO 228-1. Connection torque ranges from 15–60 N·m, and weight from 0.08–0.35 kg. These values are directory references and must be verified with the manufacturer for the specific model and application. The female half is designed for use in hydraulic systems requiring quick, leak-free connections, such as in mobile machinery, industrial equipment, and hydraulic tools. It ensures system pressure integrity and minimizes fluid loss during connection and disconnection. Always confirm compatibility with the male half and system requirements before installation.

When the male half is inserted into the female half, the internal locking mechanism (such as a ball-lock or sleeve-lock system) engages to secure the connection. Simultaneously, internal valves open to allow hydraulic fluid flow. When disconnected, spring-loaded valves automatically close to prevent fluid leakage and contamination. The sealing surfaces ensure a leak-free connection under rated pressure. The locking mechanism and valve operation are designed for rapid and repeated connection/disconnection cycles without tools. Proper alignment and full insertion are required for the valves to open completely and the lock to engage securely. The connection torque must be within the specified range to ensure a proper seal without damaging threads or seals. The burst pressure provides a safety margin, but the system should never be operated above the rated pressure. The temperature range is limited by the seal material; exceeding it can cause seal failure and leakage. Regular inspection of seals and locking mechanisms is recommended to maintain performance and prevent failures.