WATTS hose fittings Germany WATTS model WATTS price

WATTS hose fittings connect different hydraulic components (pumps, delivery lines, directional control valves, shut-off valves, hydraulic motors, hydraulic cylinders, and some auxiliary components such as level gauges, thermometers, pressure gauges, etc.) to form a closed-loop hydraulic system; hydraulic pipe fittings serve as connecting accessories in this system. Hydraulic pipe fittings are detachable connectors between oil pipes and oil pipes, or between oil pipes and hydraulic components. They should meet requirements such as easy assembly and disassembly, reliable connection, reliable sealing, small external dimensions, high flow capacity, low pressure loss, and good manufacturability. Hydraulic pipe fittings are widely used in various aspects of our lives. They are mainly used in hydraulic piping systems across industries such as energy, petrochemical, electric power, shipbuilding, automotive, rail transit, mining, metallurgy, steel mills, offshore engineering, and construction machinery. Construction machinery is where hydraulic pipe fittings are most extensively used.

Selection of WATTS hose fittings

Unidirectional flow type: Rotary joints are installed at both ends of the drum; fluid enters from one end and exits from the other, without using an inner pipe. Unidirectional flow type: A rotary joint is installed at one end of the drum, where fluid is both introduced and discharged; the inner pipe remains stationary relative to the rotation of the drum. Bidirectional flow type (inner pipe fixed): Different from the above, this type uses siphon tubes of various designs inside the drum to discharge condensate; this type is mostly used for steam applications. Bidirectional flow type (inner pipe rotating): This type is used in structures where the inner pipe is fixed relative to the drum and rotates synchronously with it; in this case, fluid is introduced through the inner pipe and discharged through the outer pipe. Bidirectional flow type (inner pipe rotating): A siphon device that rotates synchronously with the drum is installed inside the drum to discharge condensate; this type is mostly used for steam applications.

Key points for manufacturing WATTS hose fittings

Stainless steel elbows, 1. When using welding rods, keep them dry. Calcium-titanium type rods should be dried at 150℃ for 1 hour, and low-hydrogen type rods should be dried at 200-250℃ for 1 hour (do not repeat drying multiple times, otherwise the coating may crack and peel). Prevent the rod coating from adhering to oil and other contaminants to avoid increasing carbon content in the weld and affecting weld quality. During elbow welding, repeated heating causes carbide precipitation, reducing corrosion resistance and mechanical properties. Post-weld hardening is significant, making cracks likely. If welding with similar types of rods, preheating above 300℃ and post-weld slow cooling around 700℃ are required. If post-weld heat treatment cannot be performed on the weldment, chromium-nickel stainless steel welding rods should be selected. 2. To improve the corrosion resistance and weldability of stainless steel elbows, appropriate amounts of stabilizing elements such as Ti, Nb, and Mo are added, resulting in better weldability. When using similar types of chromium stainless steel welding rods, preheating above 200℃ and post-weld tempering around 800℃ are required. If the weldment cannot undergo heat treatment, chromium-nickel stainless steel welding rods should be selected.

WATTS hose fitting functions

Exchange function: Accessories for pneumatic and hydraulic tools, cylinders, hydraulic cylinders, and metal mold-related machinery. Maintenance function: Cooling devices for computers, maintenance of die-casting machine cylinders. Test function: Testing for vacuum, pressure resistance, leakage, operation, etc. Transport function: Transport and handling of solids such as bolts and nuts, as well as conductive functions. Filling function: Inert gases, nitrogen, PG, carbonic acid. Connection function: Fixtures for fishing rods and portable laser discs, connections for mobile operations, and applications other than fluid transport. Time and labor saving: Disconnecting and connecting oil lines with quick couplings is simple, saving time and manpower. Oil saving: When disconnecting oil lines, the check valve on the quick coupling can seal the oil line, preventing oil outflow and avoiding oil and pressure loss. Environmental protection: Oil does not leak when disconnecting and connecting quick couplings, protecting the environment. Equipment modularization for convenient transport: Large equipment or hydraulic tools that need to be portable can be disassembled using quick couplings for transport and reassembled at the destination. Economic value: The above advantages create economic value for customers.

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