Complete straight fittings
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COMPLETE STRAIGHT FITTINGS
What are complete straight connections? Complete straight connections are elements in hydraulic systems that allow for a permanent and leak-tight connection to a hydraulic pipe. Each set consists of a straight connection body, a cutting ring and a nut or a spherical end, which ensures full compatibility and ease of installation in high-pressure hydraulic systems. The system consisting of three elements allows for quick and trouble-free connection to the hydraulic system. Complete connections are widely used in power hydraulics, where a precise and durable connection of rigid pipes is crucial. They are used, among others, in: hydraulic systems of agricultural, construction and industrial machinery, hydraulic installations in trucks and specialized vehicles, industrial control and automation systems, energy and shipbuilding industries, where the highest quality of connections is required.
Supplier of complete hydraulic connections
Hydron is a proven supplier of hydraulic components, offering products that meet the highest quality standards. By choosing complete connections available in our store, you get: Products from renowned manufacturers that meet the requirements of the hydraulic industry. A wide range of dimensions and standards, adapted to various applications. A guarantee of tightness and durability, thanks to precise workmanship and quality of materials. Professional advice that will help in selecting the right components for your installation.
Complete hydraulic connections
HYDRON offers a wide selection of connections designed for power hydraulics, covering both individual elements and complete solutions ready for assembly. The assortment includes straight fittings and other types of hydraulic connectors, which are used in industrial installations, work machines and hydraulic systems with high technical requirements. The offer includes both the hydraulic connectors themselves and complete connections equipped with cutting rings and nuts, which significantly facilitates assembly and ensures the tightness of connections. Such solutions allow for quick and safe installation without the need to collect elements separately. Products available in the Hydron store meet the requirements of quality standards and are adapted to work in demanding conditions where durability, pressure resistance and reliability are important. Thanks to the wide availability of thread variants and sizes, it is possible to match the appropriate connections to practically any hydraulic system. Hydron also provides technical support in selecting the right components, which avoids assembly errors and increases the lifespan of the entire installation.
Complete straight fittings complete screw-in connectors with nut and ring
Complete straight fittings (complete straight screw-in connectors with a tightening nut and a cutting ring, marked as kpl / KO) are full sets of power hydraulic fittings designed for permanent, leak-free screwing into pump bodies, cylinders, directional control valves and valve blocks, as well as direct assembly on rigid precision pipes or flexible hoses. The complete set includes a fitting body with a screw-in thread (metric, inch BSP with ED soft seal, NPT or JIC/UNF), a cutting ring (double-edge according to DIN 2353 / ISO 8434-1 or Polish standard PN-126) and a tightening nut. Purchasing a straight fitting in the complete version eliminates the need to collect individual fasteners separately, ensuring a perfect match of the ring hardness and thread. Made of free-cutting steel with a galvanic zinc coating (or AISI 316 stainless acid-resistant steel), complete straight fittings guarantee 100% mechanical tightness and high resistance to working pressures ranging from 315 to 630 bar in construction, agricultural, forestry machinery and industrial equipment.
Application and technical characteristics of complete straight fittings
Complete straight fittings are commonly used during the construction of new pressure installations and in service work. A ready-to-use assembly set significantly shortens installation time and prevents errors in selecting cutting elements for steel pipes.
- Full assembly set (kpl / KO): Screw-in body + cutting ring + tightening nut in one factory set.
- Durable seal DIN 2353 / ISO 8434-1 and PN-126: The double-edge cutting ring bites into the wall of the precision pipe, creating a tight and pull-out resistant rigid connection.
- Innovative ED face seal: The screw-in thread equipped with an NBR or Viton (FKM) elastomer seal eliminates the need for Teflon tapes on body threads.
- Light series (L) and heavy series (S): Availability of sizes dedicated to pipes with external diameters from 6 mm to 42 mm for working pressures up to 630 bar.
- Excellent anti-corrosion protection: Zinc coating with white passivation protects the element against moisture, salt and hydraulic oils.
Why choose complete straight fittings in the HYDRON store?
Complete straight fittings supplied by the HYDRON brand are distinguished by the highest precision of thread machining and optimized hardness of the cutting rings. This ensures a secure and repeatable cut into the structure of steel wireless pipes without the risk of weakening the pipe cross-section. By choosing a complete set, you gain the certainty of perfect component matching and a guarantee of reliable system operation under pressure surges. For comprehensive equipment and service of the pressure station, we recommend choosing other products from our offer, such as flexible hydraulic hoses, matching steel hose ends, self-sealing test points and reliable hydraulic quick couplings.
Technical specification
Technical parameter | Value / Description |
|---|---|
Product category | Complete straight fittings (screw-in connectors kpl / KO with nut and ring) |
Set contents | Fitting body + cutting ring + tightening nut |
Screw-in thread types | Inch BSP / BSPP (with ED), Metric (with ED), NPT, JIC / UNF, PN-126 |
Connection for pipe / hose | 24° cone DIN 2353 (light series L: 6L–42L, heavy series S: 6S–38S) |
Materials and surface protection | Electro-galvanized free-cutting steel (white passivation) or AISI 316 stainless steel |
Maximum working pressure | from 315 bar up to 630 bar (depending on the L/S series and pipe diameter) |
Compliance with standards | DIN 2353, PN-EN ISO 8434-1, ISO 1179-2, PN-126 |
Working temperature range | from -20°C to +120°C (for galvanized steel and NBR seals) |
Frequently Asked Questions (FAQ)
What does the term "complete straight fitting" mean?
A complete straight fitting is a ready-to-use assembly set containing a screw-in body, a cutting ring (bite-type ring) and a tightening nut. It allows for direct installation of the connector on a seamless precision pipe without purchasing separate elements.
What are the advantages of buying fittings in the complete (kpl) version?
By buying the complete version, you get a guarantee of perfect fit between the hardness and geometry of the cutting ring and the nut to the body cone. This saves time during ordering and prevents assembly errors on site.
What does the ED face seal mean in complete fittings?
An ED seal is an integrated rubber elastomer ring seated in an undercut at the screw-in thread. It provides immediate tightness after screwing the body into the pump or directional control valve socket without the need for Teflon tape.
Can the complete fitting be mounted on steel pipes and flexible hoses?
Yes. The side with the 24° cone and nut, after the ring is bitten, creates a permanent connection on a rigid pipe. It is also possible to connect flexible hydraulic hoses with a crimped end with a 24° cone (DKOL / DKOS) to it.