high pressure hose fittings types

2022.07.31
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high pressure hose fittings types

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What Are Hydraulic Hose Fittings Made Of? Air wrenches should not be used because they are difficult to control and can easily over-tighten a bolt. Using the wrong fitting could lead to malfunctions, damages, or even endanger lives. Teflon tapes should not be used on hydraulic fittings since a seal is already created through an O-ring,metal face seal or threads. O-ring seals are the best type of seals in regards to leakage. When the bolts are fully tightened, the flanges sometimes bend downward until they bottom on the port face, and the bolts bend outward. For instance, a hydraulic fitting can either allow or prevent the flow of fluid. However, the clamp halves do not actually contact the mating surface. In addition, worker strength and fatigue could be factors affecting proper assembly. They are widespread in the fluid power industry due to their ease of use. Because pipe threads are tapered, repeated assembly and disassembly only aggravates the leakage problem by distorting threads, especially if a forged fitting is used in a cast-iron port. Flange connections generally are used with tubing that has an outside diameter (OD) greater than 7/8-in. Moreover, pipe threads are prone to loosening when exposed to vibration and wide temperature variationscertainly no strangers to hydraulic systems. The criteria for choosing the right end fittings for hydraulic hoses are size, material, temperature, pressure, application, and assembly. Adjustable fittings, such as elbows and tees, need to be oriented in a specific direction. Although these are the most popular choices, several other types are used in different and specialised applications. They are used in manufacturing hydraulics and assembly lines, water and sewage systems, oil refineries, and construction site hydraulics, to name a few. However, it is inevitable that connections must be broken to allow servicing or replacing components, so removable fittings are a necessity for all but the most specialized hydraulic systems. Hydraulic hose adapters link hydraulic hoses to pipe and equipment that have different thread types or sizes. 4). Given the extent of their usage, its important to choose the right kind of hydraulic fitting to suit your application, hose size and assembly. beyond the clamp face to ensure adequate contact and seal squeeze with the mating face (Fig. The 37-deg. Crimped fittings are much more secure than a field attachable fitting but do need the equipment to make the seal. surface finishes are acceptable, most flange manufacturers prefer and recommend 32-in. They are easy to identify and assemble with the use of a hydraulic crimper and have a reputation for being the most reliable type of fitting. Once an O-ring has been used in a fitting, it is not reusable, even though it may appear free of distortions.

O-ring boss fittings fall into two general groups: adjustable and non-adjustable. Tightening the assembly's nut draws the fitting into the flared end of the tubing, resulting in a positive seal between the flared tube face and the fitting body. Where perpendicular relationships are critical, all parts must meet appropriate tolerances. hose hydraulic construction assembly illustration fittings hoses crimp primer parker inner figure cutaway Should your hydraulic connections show any form of leak or damage, try to suspend the flow of any liquid or material through the hose for inspection and immediately arrange hydraulics inspection and repairs. Thread sealant compound, a potential contaminant, is recommended for pipe fittings, which is still another reason why most designers consider them to be obsolete for use in hydraulic systems. In addition, O-rings are not interchangeable among all couplings.

This action pinches the O-ring, and the joint can then be expected to leak. Hydraulic fittings are parts used to connect hydraulic hoses to other components. JIS fittings with tapers, as well as with parallel threads. Hydraulic hose fittings and couplings are parts that connect hydraulic hoses in a pipe system. The FFOR fitting forms a seal between a flat, finished surface on the female half and an O-ring held in a recessed circular groove in the male half (Fig. The basic design difference between the two types is that plugs and connectors have no locknuts and require no back-up washer to effectively seal a joint. or for applications involving extremely high pressures. Single Acting vs Double Acting Hydraulic Cylinders: What is the Difference? These fittings and couplings are commonly used to create hydraulic hose assemblies for transferring fluids in high-pressure petroleum- and water-based hydraulic systems found on industrial, mining, and manufacturing equipment. Although leaks can be caused by normal wear and tear due to operations and changes in temperatures and pressure, leaks are usually a sign of incorrect use or connection of hydraulic fittings. Do You Use Teflon Tape On Hydraulic Fittings? 7). If so, follow the step by step guide below. The primary hydraulic fluid types are petroleum-based, water-based or synthetic-based fluids. Their application is limited only to hydraulic fluid and non-critical applications due to the metal-to-metal design. Pipe threads are prone to leakage because they are torque-sensitiveover-tightening distorts the threads too much and creates a path for leakage around the threads. While 64-in. DIN 2353 tube fittings are most commonly used in industrial, oil & gas and construction equipment in hydraulic and pneumatic applications. The most critical operation during assembly of a split-flange fitting to its mating surface is to make certain that the four fastening bolts are tightened gradually and evenly in a cross pattern. It handles average fluid working pressures to 3,000 psi and is more tolerant of vibration than other types of all-metal fittings. JIC 37 Flares: The Joint Industrial Conference (JIC) fitting is the most common hydraulic connection style. Each of the factors mentioned above are detailed below: Aside from this criteria, the hydraulic fluids used in the industry should also determine what type of coupling is best. Using a crimper, adjust to the fittings diameter refer to the relevant. Hydraulic hose fittings are used in custom hose assemblies to join hydraulic hoses to pipe, equipment, and other hoses. However, there are several more types of hydraulic hose fittings available.American standard types of hydraulic fittings: JIC hydraulic fittings: Surprising as it may seem, leakage in hydraulic systems could have been eliminated more than a couple generations ago. finishes on mating surfaces to ensure leak-free connections. Advantages of JIC Hydraulic Fittings include: However, JIC fittings also come with their fair share of disadvantages: To properly identify the hydraulic hose fitting for the application, determine the type of fitting, match the port connection with that of the hose, and determine the type of seal and fitting design and size of the thread. The three most common fitting ends and connector types for hydraulic fittings are the O-ring, the mated angle, and the tapered thread connectors. Fittings with O-ring seals offer a number of advantages over metal-to-metal fittings. Wrench extensions (cheater bars) might be needed for some workers to exert an applicable amount of torque. Identify the correct hydraulic hose fitting by considering the size, temperature, pressure, style, material, and orientation. Chris Redondo, the Director and Founder of RYCO 247 INGLEBURN started his journey as a first year apprentice in 2000 at the age of 16 at a large engineering company called BROENS Engineering that was located in Ingleburn South West Sydney. JIS hydraulic fittings

While many crimping machines are larger units that stay in the workshop, there are also many portable and handheld hydraulic crimpers to bridge the gap between crimp couplings and field attachable fittings. With the growing popularity of portable hydraulic crimpers suitable for mobile technicians and on-site use, reusable hydraulic fittings are gradually falling out of favour. NPT connections rely on thread deformation- a metal to metal sealing design where the threads of the connectors themselves form together. All rights reserved. While under- or over-tightening any fitting can allow leakage, all-metal fittings are more susceptible to leakage because they must be tightened to within a higher, yet narrower torque range. In either case, the result likely will be a leaking joint. This will prevent any contamination. Hydraulic fittings can be made from many materials, the most common ones being plastic, stainless steel, or brass. Want to start the conversation? The post-war era ushered in systems designed to operate at pressures to 1,500 psi and higher on applications where rapid cycling and high shock pressures were present. Fittings for tubing larger than 1-in.

In either case, tightening threads between mating halves of the fitting (or fitting and component port) forces two mating surfaces together to form a high-pressure seal. Seepage around threads should be expected when pipe fittings are used in high-pressure hydraulic systems. Chris loved the business side of hydraulics and decided to move away from the company he started and establish a rival franchised business in south west Sydney to see if he could implement his own ideas and strategies and to see if they would work. An elastomeric O-ring rests in a groove on a flange and mates with a flat surface on a portan arrangement similar to the FFOR fitting. You could be connecting hydraulic hoses due to damage on the previous one, or you could just be connecting hoses of a new hydraulic system.

From garage start up to business of the year. There are different types of hydraulic fittings; each one serves a different purpose. Assembly is always predictable, because technicians need only make sure that the backup washer is firmly seated on the port's spot face surface when the assembly is completed and that it is tightened properly. Whether you are a professional in the industry or just learning the ropes, you need to be able to identify the right hydraulic fitting for the job. Sign In to access your account information. Determine the fittings depth of insertion, and place a mark on the hydraulic hose. A leak-tight seal is formed against a machined seat on the female port. Additionally, wear tends to accelerate on O-rings which are assembled against rough surfaces. Tightening the fittings nut onto the body draws a ferrule into the body. No comments have been added yet. Joints are more likely to leak if either of the mating surfaces are scratched, scored, or gouged.

The flareless fitting (Fig. Were here to make it easy for our readers with a complete guide to types of hydraulic hose fittings, their applications and how to use them. On the other hand, O-ring fittings are more expensive than their all-metal counterparts, and care must be exercised during installation to ensure that the O-ring doesnt fall out or get damaged when the assemblies are connected.

But the most important quality of a hydraulic fitting is how effective it is in creating a tight seal.The two main types of hydraulic fittings are crimped fittings and field attachable fittings. Connections of this type are considered mechanical. The choice between O-ring boss and FFOR fittings usually depends on such factors as fitting location, wrench clearance, or individual preference. Are highly durable. 3), gradually is gaining wider acceptance in the U.S. because it requires minimal tube preparation. Each type has its own use case scenario that would not be suitable for others. Tianzhuangzi Village, Zhifangtou Town, Cang County, Cangzhou City, Hebei Province, China 061000, Copyright QC Hydraulics | All Rights Reserved, NPT Female Swivel (NPSM) Hydraulic Adapters, O-ring Face Seal (ORFS) Hydraulic Adapters. This website uses cookies and third party services. Hydraulic fittings are sealed either through O-rings, thread sealants, or self-sealing like SAE flanged fittings. Because of this, flareless fittings must be used with medium- or thick-walled tubing. Flare-type fittings (Fig. Chris Redondo, the Director and Founder of RYCO 247 INGLEBURN started his journey as a first year apprentice in 2000 at the age of 16 at a large engineering company called BROENS Engineering that was located in Ingleburn South West Sydney. Fittings seal fluid within the hydraulic system by one of two techniques: all-metal fittings rely on metal-to-metal contact, while O-ring type fittings contain pressurized fluid by compressing an elastomeric seal. Not all fittings are compatible with all hydraulic fluids. Threads on pipe fittings are tapered and rely on the stress generated by forcing the tapered threads of the male half of the fitting into the female half or component port (Fig.