94-0631 Original Excavator S-Elbow for Hitachi ZX200

Number 94-0631 is the manufacturer's internal part number or production batch number for the L-shaped metal bend pipe (S-bend pipe), usually found in the part itself, and is an important identifier for tracing its production source. This component is a key connecting piece for hydraulic or pneumatic systems, mainly used for ZX200 series excavators, and may also be commonly used on ZX200-3, ZX200-5G, ZX210 and other models with similar hydraulic pipeline layouts. Its unique L-shaped design is used to connect pipelines, change fluid direction, and compensate for installation stress in compact spaces such as engine compartments and hydraulic valve groups. It is strictly prohibited to use bent pipes with thread specifications or angles that do not match, in order to avoid leakage, interference, or stress concentration in the pipeline.

This product is a precision forged/machined L-shaped metal bend, with a 90 degree standard bend as a whole, made of high-strength carbon steel or alloy steel. One end is an internal threaded interface, used for screwing in external hard pipes or fittings; The other end is an external threaded interface with a sealed groove, used for installing hose fittings or directly connecting valve blocks. The surface is treated with zinc or cadmium plating, presenting a silver gray color with rainbow luster, and has excellent rust and corrosion resistance. The square gear logo imprinted on the bent pipe body is the manufacturer's trademark of Xiaoyuan or similar well-known brands, representing its reliable industrial quality. Its thread specifications, center distance, and bending radius have been precisely designed to withstand the working pressure of hydraulic systems, making it a fundamental structural component that ensures reliable and leak free pipeline connections.

Installation and inspection: 1 Cleaning and inspection: Before installation, it is necessary to thoroughly clean the internal and external threads with cleaning agents and lint free cloth, and check whether the threads are damaged and whether the sealing grooves are intact. 2. Sealing treatment: Wrap an appropriate amount of sealing tape or apply thread sealant (depending on the system medium and pressure) on the thread, taking care to avoid the sealing material from entering the interior of the pipeline. 3. Alignment and screwing in: Align the bent pipe (94-0631) with the port and screw in the first thread by hand, ensuring that the thread is aligned and preventing "biting". 4. Torque tightening: It is necessary to use an open-end wrench or a ring wrench of the corresponding size to clamp the hexagonal part of the bent pipe, and tighten it according to the system's required torque (usually 20-40 N · m, please refer to the maintenance manual for details). Do not tighten the bent pipe body by directly clamping it to avoid deformation. 5. Leak detection inspection: After connecting the pipeline, start the system and maintain pressure, and check for any leaks at the connection.