WIKA hose fittings Germany WIKA model WIKA price

WIKA hose fittings are connection devices used to connect metal hoses and pipes. Their models are typically determined by factors such as material, connection method, size, and applicable working pressure. Different models have different characteristics and scopes of application, such as compression-type metal hose fittings, flange-type metal hose fittings, and swivel-type metal hose fittings. Selecting the appropriate metal hose fitting model requires consideration of multiple factors, such as the temperature, pressure, fluid medium, service life, and connection method of the working environment. For applications under special conditions such as high temperature, high pressure, and strong corrosion, it is necessary to select high-quality metal hose fitting models that meet the requirements.

WIKA hose fitting applications

Pipe fittings are connection tools between pipes and are demountable connection points between components and pipes. They play an indispensable role in pipe fittings and are one of the two main components of hydraulic piping. Pipe fittings are used for straight connections in instruments and other equipment, with connection forms including socket welding or threaded connections. They are mainly used for small-diameter low-pressure pipelines, for parts that require frequent assembly and disassembly, or as final adjustments for pipelines using threaded pipe fittings. The structural form should preferably adopt a metal-to-metal contact sealing structure. Gasket sealing structures are typically used in general pipelines transporting water, oil, air, etc., and are manufactured from malleable cast iron. In addition, usage requirements and price are also factors considered during selection. Pipe fittings come in many varieties; commonly used pipe fittings can generally be divided into hard pipe fittings and hose fittings. If classified by the connection method between the pipe fitting and the pipe, hard pipe fittings include flare-type, compression-type, and welded types, while hose fittings are mainly crimped rubber hose fittings. The connection methods between pipes and pipe fittings in hydraulic systems also vary; the pipe end inserted uses connecting threads. Tapered threads rely on their conical body tightening and use materials such as PTFE for sealing operations, mainly applied in medium and low-pressure hydraulic systems. Fine-thread sealing performance is very good and is often used in high-pressure systems, but it requires the use of combination washers or O rings for end-face sealing. Sometimes copper washers are also used, which are more suitable for pipes with thicker walls. Its main components include the fitting body, tailpiece, and nut. During use, the fitting body is embedded into the target, and the aforementioned washers are used to seal the end face. The fitting body and tailpiece are sealed with rubber, and sometimes spherical sealing is used. Since pipe fittings are demountable connection elements, in addition to meeting requirements for normal connection stability, strong sealing, reasonable dimensions, low pressure loss, and good manufacturability, they must also meet the requirement for convenient assembly and disassembly. Therefore, do not underestimate these small pipe fittings, as only their existence supports the entire hydraulic system.

WIKA hose fitting structure

Connects unthreaded steel pipes or unthreaded equipment cable outlets to hoses, eliminating the need for threading; metal fittings are die-cast from zinc alloy, with surfaces galvanized, matte-finished, or chrome-plated; compact structure, high strength. Reliable connection between steel pipes and metal hoses, aesthetically pleasing appearance; This metal fitting is self-locking, used to connect metal hoses to unthreaded steel pipes or unthreaded equipment cable outlets; compatible metal hoses: compatible steel pipes: thin-wall electrical conduits, black and white iron pipes; when selecting self-locking metal hose fittings, please note the specifications and dimensions of the connected steel pipes and hoses. 90 degree fitting 90 degree elbow fitting: Thread specification: Imperial thread Product material: A, C, F parts are all made of high-quality steel. D is made of die-cast sheet metal. Color types: Metallic (silver-white) Operating temperature: -40 degrees to 100 degrees, instant heat resistance up to 120 degrees. Product features: After connection, it forms a 90 degree angle with the enclosure, thickened zinc alloy, aesthetically pleasing appearance, compact structure, high strength.

WIKA hose fitting function

It connects the mesh sleeve with the entire bellows. At the same time, the fitting is also a component that connects metal hoses to other pipe accessories and equipment. It ensures the normal operation of the medium in the pipeline system. The material of the fitting is usually the same as that of the bellows and mesh sleeve, and most are stainless steel. When transporting non-corrosive media, some larger-diameter metal hoses can be made of carbon steel. Metal hose fittings for corrosive media (if designed) take appropriate measures to avoid contact with the medium and can also be made of carbon steel. The structure of the fitting is roughly divided into three categories: screw type, flange type, and quick-connect type. Under high working pressure conditions, fittings for metal hoses (explosion-proof hoses) with a thread diameter less than 50 mm are mostly threaded. After tightening the threads, the inner and outer conical surfaces of the two fittings fit tightly to achieve sealing. The cone angle is usually 60 degrees, while 74 degrees is also useful. This structure has good sealing performance, but concentricity of the two mating parts must be ensured during installation. To solve the problems of repeated disassembly, assembly, and concentricity that often occur in actual projects, the fitting can also be designed to match conical surfaces and ball heads.

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