P&H hose fittings, German P&H models, P&H prices

P&H hose fittings connect various hydraulic components (pumps, delivery lines, directional valves, shut-off valves, hydraulic motors, hydraulic cylinders, and auxiliary components such as level gauges, thermometers, and pressure gauges) 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 other oil pipes or between oil pipes and hydraulic components. They must meet requirements such as ease of assembly and disassembly, reliable connection, reliable sealing, compact external dimensions, high flow capacity, low pressure loss, and good manufacturability. Hydraulic pipe fittings are widely used in all aspects of our lives. They are mainly used in hydraulic piping systems across various industries, including energy, petrochemicals, 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.

P&H hose fitting installation

Cut the pipe to the required length using a sawing machine or a dedicated pipe-cutting machine. Do not use thermal cutting (such as flame cutting) or grinding wheel cutting. Remove burrs from the inner and outer circles of the pipe end, metal chips, and dirt. Remove rust preventive agents and dirt from the pipe fittings. Ensure the roundness of the pipe. Slide the nut and ferrule onto the pipe in sequence. The cutting edge (small diameter end) at the front of the ferrule must be at least 3mm away from the pipe mouth. Then insert the pipe into the tapered hole of the fitting body until it bottoms out. Slowly tighten the nut while rotating the pipe until it no longer moves. Then tighten the nut by 2/3 to 4/3 turns. Disassemble and check whether the ferrule has cut into the pipe and if its position is correct. The ferrule must not have axial movement but may rotate slightly. After passing inspection, retighten the nut.

P&H hose fitting selection

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 (fixed inner pipe): Unlike the previous type, this type uses different forms of siphon tubes inside the drum to discharge condensate. This type is mostly used for steam applications. Bidirectional flow type (rotating inner pipe): 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 (rotating inner pipe): 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.

P&H hose fitting model selection

Metal hose assemblies consist of a metal hose body, a stainless steel wire mesh braid, and fittings. They can compensate for certain relative displacements and provide vibration damping and noise reduction effects. However, improper selection will not only fail to achieve vibration isolation and noise reduction but may also cause pipeline leaks or even equipment failures due to damage to the metal hose. The selection of metal hoses mainly involves the correct choice of parameters such as nominal diameter, connection type, working pressure, temperature correction, minimum bending radius, and hose length. Nominal diameter, connection type, and working pressure are directly determined by the pipeline system requirements and generally do not pose problems. It is worth noting that when selecting the design pressure of the hose (which should be greater than the system working pressure), it should not be excessively high, because as the pressure-bearing capacity of the hose increases, its bending capability decreases significantly. Temperature correction and minimum bending radius are fixed for the product and provided by the manufacturer. Problems often arise in the selection of the metal hose length. Excessive hose length can cause instability, increase flow resistance, and lead to additional mechanical damage and vibration issues. Insufficient hose length may fail to achieve compensation, vibration damping, and noise elimination, and may also cause excessive bending stress, affecting service life.

Weidou Intelligent Technology specializes in selling German P&H oil pipe fittings, P&H hose fittings, P&H pipe fittings, P&H pipe component fittings, P&H rotary joints, P&H metal fittings, P&H brass fittings, P&H stainless steel fittings, P&H plastic fittings, P&H hydraulic pipe fittings, P&H adapter fittings, P&H threaded pipe fittings, P&H straight-through fittings, P&H articulated fittings, P&H ferrule-type fittings, all original imports from Germany. Customers are welcome to inquire and place orders.