Keller hose fittings Germany Keller model Keller price

Keller hose fittings are straight-through connectors used for linear connections such as instruments. Connection methods include socket welding or threaded connection. They are mainly used for small-diameter, low-pressure pipelines, for parts that require frequent assembly and disassembly, or for final adjustment of pipelines using threaded fittings. Relevant products are all listed by Kuaiyiyou. The structural form should preferably adopt a metal-to-metal contact sealing structure. Gasket sealing structures are generally used in general pipelines transporting water, oil, air, etc., and are made of malleable cast iron. In addition, application requirements and quotation are also factors to consider when selecting. There is a wide variety of straight-through hose fittings. Commonly used straight-through hose fittings can generally be divided into two types: hard hose straight-through fittings and soft hose straight-through fittings. If classified according to the connection method between the straight-through hose fitting and the pipeline, hard hose straight-through fittings come in three types: flared, ferrule-type, and welded. Soft hose straight-through fittings are mainly crimped rubber hose straight-through fittings. The connection methods between pipelines and straight-through hose fittings in hydraulic systems also differ; the pipe insertion end uses connecting threads. Tapered threads rely on their conical body to tighten and use materials such as polytetrafluoroethylene for sealing operations, and are mainly used in medium and low-pressure hydraulic systems.

Keller hose fitting applications

Quick-connect fittings are also commonly referred to as self-locking fittings or quick-insert sealing fittings. They allow locking of pipe fittings and connectors through simple operation, without the need to tighten nuts or use clamps. They can withstand higher pressures, up to 70Bar or even higher. For cooling water channels, flanged ports or straight round pipes usually require clamps to secure standard fittings, which involves more steps and does not offer good pressure resistance. With technological progress, in addition to self-locking quick-connect fittings, pneumatic quick-connect fittings (automation quick-connect fittings) are better suited for industrial automated production, driven by air pressure. The purpose of using quick-connect fittings is to achieve faster operations. Modern mechanized production emphasizes efficiency and aims to reduce the workload of operators. Their speed is reflected in: easy handling, fewer operating steps, simple operation, automatic locking, and sealing and disconnecting requiring only one plug-in and one pull-out, which is much more convenient compared to standard fittings.

Keller hose fitting functions

Insert the steel pipe into the ferrule and tighten it using the ferrule nut. This presses against the ferrule, cutting into the pipe to create a seal. It does not require welding when connecting to steel pipes, which is beneficial for fire prevention, explosion protection, and high-altitude work, and eliminates the drawbacks of improper welding. The mechanical advantages and geometric shape of the fitting make this mechanical device a sealing component capable of preventing leaks. The mechanical thrust pushes the rear ferrule against the conical back of the front ferrule, while simultaneously pushing the front ferrule into the tapered reducing mouth of the fitting body. The ferrule is squeezed onto the conduit by an inward radial force. At this point, pulling out the front ferrule forms a full-face seal on the tapered reducing surface of the fitting body. When hand-tightening feels secure, rotate the ferrule nut further from this manually tightened position to ensure uniform thrust on the seal. This ensures effective sealing performance even in high-pressure and ultra-high vacuum environments. Therefore, it is a relatively advanced connector in pipeline systems for automatic control devices in industries such as oil refining, chemical, petroleum, natural gas, food, pharmaceutical, and instrumentation.

Keller hose fitting classification

Flexible elbow Ferrule elbow Flanged elbow Quick-install elbow Base-mounted elbow Flange elbow 180° elbow Double-socket elbow Single-socket elbow Socket elbow Reducing elbow Seamless elbow Butt-weld elbow 90° elbow 45° elbow Combination tee Internal thread elbow Stamped elbow Push-formed elbow High-pressure elbow Wear-resistant elbow Mechanical elbow Flange-type elbow Grooved elbow Spatial elbow External thread elbow Threaded elbow Special-purpose elbow Waterproof elbow

Weidou Intelligent Technology specializes in selling German Keller oil pipe fittings, Keller hose fittings, Keller pipe fittings, Keller pipe component fittings, Keller rotary joints, Keller metal fittings, Keller brass fittings, Keller stainless steel fittings, Keller plastic fittings, Keller hydraulic pipe fittings, Keller adapter fittings, Keller threaded pipe fittings, Keller straight-through fittings, Keller articulated fittings, Keller ferrule fittings, Keller original imports from Germany. We welcome inquiries and orders from customers.