Straight fittings are a universal solution used in many industries, offering durability, tightness, and simplicity of assembly in various operating conditions. Straight fittings find application in a wide spectrum of installations and systems, both in hydraulics and pneumatics. Thanks to their universal construction, they are used wherever a durable and tight connection of elements is necessary. Straight connectors are used in: Hydraulic systems: Essential in construction, agricultural, and industrial machinery, where they enable the connection of hydraulic hoses in systems operating under high pressure. Pneumatic installations: Used in compressed air systems, especially in workshops and industrial plants, where they ensure tightness and ease of assembly. Oil lines: Used to connect pipes and hoses in systems transporting various types of liquids, such as fuel or oil. Water and heating installations: Used in water transmission systems and central heating systems where reliable connections are required. 

Straight threaded nipple 

What is a nipple? A nipple is a fastening element used in hydraulic, pneumatic, and water installations, enabling the connection of two hoses, pipes, or other system components. Its basic function is to provide a tight and durable connection, which is particularly important in high-pressure systems where liquid or gas flows. In power hydraulics, nipples play a significant role in creating and modifying systems, allowing for their expansion or adaptation to specific installation requirements.

Double-threaded nipple

A nipple threaded on both sides is a special type of nipple that has threads on both ends, allowing for easy and safe connection of two elements of a hydraulic system. Depending on the application, the threads can be of various types – metric nipples, inch BSP, NPT, or others, adapted to the standards used in a given installation. Thanks to two identical or different threads, double-threaded nipples allow for connecting hoses, pipes, or other system elements without the need for additional adapters. These nipples are used in high-pressure systems where resistance to heavy loads, tightness of connections, and the possibility of easy assembly and disassembly without the risk of damaging installation elements are important.

Steel threaded nipples – construction and properties

Steel threaded nipples are elements made of high-quality galvanized steel with an anti-corrosion coating, which protects them from moisture and indirectly from various other aggressive chemical substances. The steel used for their production is characterized by high mechanical strength and resistance to high pressures and temperatures, which makes them indispensable in professional hydraulic systems. Construction of a threaded nipple. Straight steel threaded nipples have a specific construction that can be summarized in several parts: √ Threaded part – both ends of the nipple are covered with a precisely made thread that enables a durable and tight connection of installation elements - we distinguish between nipples with the same threads and reducing nipples with two different sized threads. The middle part of the nipple, which ensures the rigidity and strength of the entire connection, most often has a hexagonal cross-section to facilitate tightening with a wrench (designated as a hexagon). √ Protective coating – steel nipples are often galvanized or coated with other substances protecting against corrosion and mechanical damage. High precision of the thread manufacturing and the quality of the material used are very important for the tightness of connections in hydraulic systems, where even the smallest leaks can lead to pressure losses and installation failure. 

Application of steel threaded nipples

Threaded nipples find wide application in various industries: ✔ Power hydraulics – used for connecting high-pressure hoses and other elements of the hydraulic system. ✔ Pneumatic installations – enable the assembly and extension of compressed air hoses. ✔ Heating and water supply systems – used in connections of pipes and valves in water installations. ✔ Chemical industry – used in systems for transporting liquids and gases with high chemical aggressiveness. 

Straight threaded fitting

What is a threaded fitting? A threaded fitting is one of the basic elements used in hydraulic, pneumatic, and central lubrication systems. Its main task is to ensure a tight and durable connection of hydraulic hoses, tubes, actuators, and other installation components. Thanks to the use of appropriate external and internal threads, threaded fittings allow for quick assembly and disassembly of connections, which facilitates servicing and maintenance of the system.

appearance of a metric straight fitting 

example of connecting hydraulic hoses using a straight fitting