VOSS hose connector Germany VOSS model VOSS price

VOSS hose connectors consist of a nut, metal ring, sealing ring, and the body. They offer waterproofing, dirt resistance, explosion-proof protection, and corrosion resistance, becoming an essential part of industrial piping. Overall, each pipeline has different requirements for metal hoses; plastic-coated metal hose tee fittings and corresponding bimetallic composite pipes are used for different materials and construction environments.

VOSS hose connector installation

Cut the pipe to the required length using a saw or special pipe cutting machine. Flame cutting (such as flame cutting) or grinding wheel cutting is strictly prohibited; remove burrs from the inner and outer circles of the pipe end, metal chips, and dirt; remove anti-rust agents and dirt from the pipe joint; ensure the roundness of the pipe; slide the nut and ferrule onto the pipe in sequence; the cutting edge at the front end of the ferrule (small diameter end) must be at least 3mm away from the pipe mouth; then insert the pipe into the tapered hole of the connector body until it bottoms out; slowly tighten the nut while rotating the pipe until it stops moving, then tighten the nut another 2/3 to 4/3 turns; disassemble to check if the ferrule has cut into the pipe and if the position is correct. The ferrule must not move axially but may rotate slightly; after passing inspection, retighten the nut.

VOSS hose connector selection

Unidirectional flow type: Install rotary joints at both ends of the drum; fluid enters from one end and exits from the other, without using an inner tube. Unidirectional flow type: Install a rotary joint at one end of the drum, where fluid is both introduced and discharged at this end; the inner tube remains stationary relative to the rotation of the drum. Bidirectional flow type (inner tube 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 tube rotating): This type is used when the inner tube is fixed relative to the drum and rotates synchronously with it; fluid is introduced through the inner tube and discharged through the outer tube. Bidirectional flow type (inner tube rotating): A siphon device rotating synchronously with the drum is installed inside the drum to discharge condensate; this type is mostly used for steam applications.

VOSS hose connector classification

Welded pipe fittings use a adapter welded to the pipe. End-face sealing between the fitting body and the adapter is achieved using an O-ring seal. Simple structure, easy to manufacture, good sealing performance, low requirements for pipe dimensional accuracy. High welding quality is required, and assembly/disassembly is inconvenient. Operating pressure can reach 31.5MPa, operating temperature -25 to 80°C, suitable for oil-medium pipeline systems. Ferrule-type pipe fittings use ferrule deformation to grip and seal the pipe; advanced structure, good performance, light weight, small size, convenient use, widely used in hydraulic systems. Operating pressure can reach 31.5MPa, high pipe dimensional accuracy is required, cold-drawn steel pipes must be used. High ferrule precision. Suitable for oil, gas, and general corrosive medium pipeline systems. Flared pipe fittings use flaring at the pipe end for sealing, requiring no other sealing elements. Simple structure, suitable for thin-walled pipe connections, suitable for low-pressure pipeline systems with oil or gas as the medium. Insert-welded pipe fittings involve inserting the pipe of required length into the fitting until the pipe end contacts the inner end of the fitting, welding the pipe and fitting into one unit, eliminating the need for an adapter, but strict pipe dimensions are required; suitable for oil and gas medium pipeline systems. Tapered seal welded pipe fittings have an external taper surface on one end of the adapter plus an O-ring seal matching the internal taper surface of the fitting body, tightened with threads. Operating pressure can reach 16 to 31.5MPa, operating temperature -25 to 80°C, suitable for oil-medium pipeline systems. Crimped hose fittings are easy to install but add a tightening process. The fitting outer sleeve cannot be reused after hose damage; they form assemblies with wire-braided hoses. Can be connected with welded pipe fittings sealed with O-rings. Suitable for oil, water, and gas medium pipeline systems. Medium temperature: Oil: -30 to 80°C; Air: -30 to 50°C; Water: below 80°C. Three-piece hose fittings do not require stripping the outer rubber layer of the hose during assembly. For hoses with slightly different outer diameters, compensation is achieved by the pre-compression of the fitting outer sleeve on the hose. Hose pre-compression in the range of 31% to 50% ensures no leakage under working pressure, no pulling out, and no cracking of the outer rubber layer. Can be connected with welded pipe fittings, quick-change couplings, and ferrule-type pipe fittings; suitable for oil, water, and gas medium pipeline systems; working pressure and medium temperature are limited by the connected hose. Quick-change couplings (two-end shut-off type): After disconnecting the pipe, self-sealing occurs, preventing liquid loss in the pipeline, thus suitable for frequent disassembly occasions. Complex structure, higher local resistance loss. Suitable for oil and gas medium pipeline systems, working pressure below 31.5MPa, medium temperature -20 to 80°C. Quick-change couplings (two-end open type): Suitable for oil and gas medium pipeline systems; working pressure and medium temperature are limited by the connected hose.

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