What types of hydraulic fittings are there?

This article will fit you like a glove. I will explain in 5 minutes what types of hydraulic fittings exist.

Link to HT-HYDRAULICS

Hey, a word of advice!

As you read the article, click on the different types of fittings. It will open a new tab to see each type in more detail. I know you love to know more.

So, let&#;s go!

What is a hydraulic fitting?

A quick definition of fitting:

Fittings are mechanical elements that allow two or more pipe or hose elements to be connected safely and efficiently. There are several types of fittings used in different applications and environments, each with its own characteristics and benefits.

Hydraulic fittings are a special type of fitting used in hydraulic systems to connect pipes and hoses that carry fluids normally under high pressure. These hydraulic systems are in a wide variety of applications, from heavy machinery, process industry, and construction vehicles to industrial production equipment and lifting and handling systems.

We design Hydraulic fittings to withstand high pressures and temperatures. They provide a tight, secure connection in demanding working environments.

They can be made from a variety of materials, such as stainless steel, brass, aluminum, or plastic. In addition, they can be available in a variety of shapes and sizes to suit the needs of each application (straight, elbow, tee, cross&#;).

Let&#;s get down to what is interesting, as I guess it is already clear to you what a fitting is.

Types of hydraulic fittings

They are divided into two main categories: high-pressure fittings and low-pressure fittings. High-pressure fittings are used in systems that convey fluids at high pressure, such as hydraulic systems of heavy machinery or drilling equipment.

Low-pressure fittings are used in systems that convey fluids at low pressure, such as lubrication systems. They are connected to pipes and hoses by different methods, such as threading, compression, or mechanical bonding.

They can also have different shapes, such as straight fittings, elbows, tees, or cross fittings. These allow pipes and hoses to be joined at different angles and configurations. It is important to select the right type of hydraulic fitting for each application to ensure a secure and durable connection.

In addition, hydraulic fittings must be installed and maintained correctly to prevent leaks and damage to the system. In summary, hydraulic fittings are a key component in hydraulic systems. They are essential to ensure the safe and reliable operation of the equipment and machinery that use them.

Let&#;s look at the different types in a little more detail.

Double ring fittings

A double-ring compression fitting, also known as a compression union fitting, double olive fitting or double ferrule, or &#;Swagelok&#; fitting, is a type of fitting used in piping and hose systems to create a secure, leak-tight connection. This type of fitting is commonly used in medium or high-pressure fluid handling applications.

Simply connect them to the pipe and tighten them with a wrench or open-end wrench to achieve a watertight connection.

One of the advantages of double-ring fittings is that they are relatively easy to install and do not require soldering glue, or special tools.

Another advantage of double-ring fittings is that they are very versatile and can be used with different sizes of pipes and hoses, such as copper, stainless steel, and plastic tubing. It is important to make sure that the double ring fitting is compatible with the type of tubing used and that it is seamless.

And, stay tuned, because I have all the sizes and fittings you need. Elbows, reducers, crosses, tees, valves, sleeves, and many more. In addition, I manufacture them in 316/L stainless steel. They can also be manufactured in 904, Alloy 20, Duplex, Superduplex, Incoloy, Hastelloy, Inconel, Monel, or other materials upon request.

And if you want the technical data sheet of the double ring fitting, don&#;t be shy and click on download:

ASME hydraulic fittings

ASME B16.11 , and PSI fittings are a type of high-pressure fitting used in industrial applications where a secure, high-pressure resistant connection is required. These fittings are designed and manufactured to American Society of Mechanical Engineers (ASME) B16.11 specifications. They are available in different sizes and shapes to suit the needs of each application.

The number used to describe these fittings (, , and PSI) indicates the ASME pressure rating they can withstand. ASME B16.11 PSI fittings are suitable for high-pressure applications requiring a maximum strength of up to pounds per square inch. ASME B16.11 PSI fittings are suitable for even more demanding applications requiring a maximum strength of up to pounds per square inch. Finally, ASME B16.11 PSI fittings are the strongest. They are used in applications requiring a maximum strength of up to pounds per square inch.

This standard covers NPT and Socket Weld connections, although we also have them in BSPP.

And if you want the ASME Fittings datasheet download it in a second here:

Single-ring hydraulic fittings

As you can see, I am giving you little gifts with the technical data sheets. In the end, it is all very well to know what each one is, but it is necessary to know more in detail.

Let&#;s go to the single-ring fitting.

Redfluid&#;s single-ring fittings are designed for joining pipes and tubing in hydraulic systems and comply with the Deutsches Institut fϋr Normung DIN / ISO -1 standard. These fittings are available in different sizes, from 4 to 42 mm OD, to suit different tubing or pipe diameters. Depending on the series and pipe diameter, these fittings can withstand up to 800 bar.

The range of single-ring fittings includes a wide variety of shapes, such as straight, cross, tees, elbows, mixed male or female x-ring thread, wall bushings, and weld fittings, among others. These fittings are available in two standard materials: 316 stainless steel and carbon steel.

In summary, Redfluid&#;s single-ring fittings are a reliable solution for connecting pipes and tubing in hydraulic systems and are available in different sizes and shapes to suit the needs of each application. In addition, their ability to withstand high pressures makes them ideal for applications that require additional strength.

If you are interested in seeing the difference between a single ring fitting and a double ring fitting in much more detail, you can click HERE.

And as in any case, here is the technical data sheet of the single ring:

Hydraulic quick and automatic fittings

There are two types of automatic and quick fittings available: Push-in fittings and push-on fittings.

• Push-On Fittings: They consist of an outer metal nut and a small inner nipple. The tube is inserted into the nipple and tightened with the outer nut.

• Push-In Fittings: The tube is inserted into the push-in fitting and an outer ring, which is usually red or blue plastic, holds the tube without the need to tighten any nuts. They are also called &#;Festo&#; type.

Both types of fittings are available in brass or stainless steel and can be found in a wide variety of shapes and forms, and in different threads, including BSP, BSPT, NPT, and metric. They are also available in different dimensions, from 4 mm to 16 mm outside diameter (OD).

If you are a fan of this type of fittings, I recommend downloading the quick and automatic fittings datasheet:

High-pressure hydraulic fittings

There is a wide range of products that are suitable for working pressures above 400 bar, up to bar. For high pressures, special connections known as &#;cone & thread&#; MP (Medium Pressure) or &#;cone & thread&#; HP (High Pressure) are used. MP products normally work up to bar, while HP products can work up to bar.

Needle valves, ball valves, and check valves are included, as well as fittings in different shapes, such as elbows, tees, sleeves, and plugs. In addition, the fittings are available in Male x Male, Male x Female, or Female x Female versions. It is one of the typical fittings for hydrogenerators or high-pressure hydrogen pipelines. The connection is watertight and high pressure. These fittings can only be connected to pipes with specially coned ends compatible with the rest of the fittings. We provide a complete solution for the coning of any installation and we supply already coned according to your lengths.

Additional resources:
Ultimate Guide of Water Filter Cartridges from Selection to ...
Silane-Modified Silicas as Functional Matting Agents

For more information, please visit HT Hydraulic Hose Fittings.

They are usually manufactured in 316 stainless steel. If you do not find the adapter you are looking for, we can manufacture it for you.

You can also download the technical data sheet of the high-pressure fittings and valves. And this is the last of this article:

Certificates for hydraulic fittings

This part is very useful, either way aim well.

In the industrial world, the safety and reliability of equipment and systems are of vital importance to ensure process quality and efficiency. In this regard, fittings and other pipe fittings must comply with a number of norms and standards to ensure their quality and performance.

• Certificates for double ring fittings: EN 2.2 or 3.1
• Certificates for ASME fittings: EN 3.1, EAC (GOST TRCU), SHELL, PEMEX, BP, REPSOL, TOTAL, ENI, PED 97/23CE and PED /68/EU approvals.
• Certificates for single ring fittings: EN 2.2 or 3.1
• Certificates for push-in and push-in fittings: /, /65/EC, NSF/ANSI169, PED /68/EU, SILCON FREE, MOCA / CE, ISO :
• Certificates for high-pressure fittings: EN 2.2 or 3.1

Well, I don&#;t want to go on any longer, otherwise I&#;ll be labeled as tedious.

I hope this article has been useful for you to better understand the different types of fittings and their characteristics.

Hydraulic fittings are found across nearly every industry, with a wide variety of uses and applications. Different types of fittings are designed for different applications and specifications. It is important to be familiar with the different types of hydraulic fittings to determine the best one to suit your required application, hose size, and assembly. 

This article will explore what hydraulic hose fittings are, their applications, and the most common types, shapes, and materials they are made from. Understanding these key fitting types will allow you to make informed decisions when selecting the right fittings for your hydraulic system.

What Are Hydraulic Hose Fittings?

Quality industrial hydraulic hose fittings are a crucial component of any hydraulic system. Fittings allow hydraulic hoses to connect to various components and machines, and facilitate the transfer of hydraulic fluid and power. 

Hydraulic fittings come in various sizes, materials, types of seals, and temperature and pressure tolerances. Some can allow or prevent the flow of fluids, and some can do both. 

What Are Industrial Hydraulic Hose Fittings Used For?

Because industrial hydraulic hose fittings serve a number of purposes, they can be used for applications in a variety of industries. Some of these industries include:

• Construction and Heavy Machinery: Hydraulic hose fittings ensure reliable fluid transfer and power transmission in hydraulic systems for excavators, loaders, and cranes, enabling precise control and efficient operation.
• Manufacturing and Industrial Equipment: Machine tools, presses, and material handling equipment all need hydraulic hose fittings to ensure smooth operation and minimize downtime.
• Agriculture: Hydraulic hose fittings enable the efficient transfer of power and fluid in tractors, harvesters, and irrigation systems, thereby facilitating lifting, steering, and controlling attachments.
• Transportation and Automotive: From cars to heavy-duty trucks, hydraulic hose fittings are used in applications such as braking systems, power steering, suspension systems, and hydraulic lifts.
• Oil and Gas: This industry relies on hydraulic hose fittings for drilling, extraction, and transportation, providing fluid transfer and control in demanding environments.

3 Common Types of Industrial Hydraulic Hose Fittings

There are three main types of hydraulic hose fittings: the O-ring, the mated angle, and the tapered thread connectors. Other types are used in different and specialized applications, but those are the three most common.

A brief note on fitting gender descriptors: Conventionally, each half of a pair of mating connectors, or fittings in this case, is assigned the designation male or female. The female is generally the receptacle that receives and holds the male piece.

1. O-Ring Face Seal (ORFS)

An ORFS seal fitting has an O-ring at the flat face of the fitting. The seal is achieved by connecting the O-ring with the flat face of the female connection.

ORFS are ideal for high-pressure applications and provide a leakage-free connection. They are secure, reliable, and can eliminate leaks in hydraulic systems that operate at up to 6,000 PSI pressure. ORFS are often preferred because they are less likely to be over or under-tightened.

2. Mated Angle

These fittings have thread, followed by an angled plane (or taper) going around the whole fitting, referred to as the &#;flare&#;. The threads can be either straight or parallel.

The threads themselves do not form the seal; instead, they push the flares together. When the male and female are threaded together, the flares meet up and are &#;seated&#; or sealed together.

3. Tapered Threads

In a tapered thread fitting, the male has threads on the outside, and the female fitting has threads on the inside. The tapered thread deforms when they are threaded together. The consequent pressure on the couplings creates the seal. 

Under high pressure, fluid may work through the threading over time, spiraling through the threads until it finds its way out. Plumber tape may be used to prevent this; however, the tape is prone to shredding and contaminating sensitive areas. Tapered threads are also prone to being over-torqued. These disadvantages often cause tapered threads to be prohibited for use in hydraulic and pneumatic systems.

Other Hydraulic Host Fitting Features to Consider

Other important features of hydraulic hose fittings include how they attach to the hose, their shape, and the material they are made from.

Permanently Crimped vs. Field Reusable

Hydraulic fittings can be attached to hydraulic hoses in two main ways: crimped fittings and field attachable fittings. 

Field attachable or reusable fittings have a socket and nipple, and can be installed anywhere without using crimping equipment.

Crimped fittings are permanently sealed with a crimping machine. Permanent hydraulic fittings are much more widespread than reusable fittings. They have a reputation for being the most secure and reliable fitting, and are widely used in the fluid power industry. 

Permanent fittings require the use of a crimping machine. Crimping machines range from large workshop variants to more portable handheld devices. Portable crimpers have become very popular and are suitable for on-site use.

Shape

Hydraulic hose fitting shapes allow hoses and components to connect, change direction, and split or combine fluid. Here is a list of common industrial hydraulic hose fitting shapes:

• Straight Fittings: These are the simplest hose fittings. They have a straight design and are used to connect two hoses or a hose to a component in a straight line.
• Elbow Fittings: These fittings have a bent or angled design. They are used when a change in direction is required in the hydraulic system. Elbow fittings come in various angles, such as 45 and 90 degrees, allowing flexibility in system design and installation.
• Tee Fittings: Tee fittings are T-shaped, and are used to split or combine hydraulic fluid flow. They enable the connection of three hoses or components, allowing for the branching or merging of hydraulic lines.
• Cross Fittings: Cross fittings, similar to tee fittings, have a cross-shaped design. They enable the connection of four hoses or components, allowing for more complex hydraulic system configurations.
• Flange Fittings: These fittings are used to connect hoses or components to a flanged surface. They provide a secure, leak-free connection, making them suitable for high-pressure applications.

Material

There are many different materials for hydraulic hose fittings. The most common fittings are made with stainless steel or brass, though the material typically depends on the industry and application. 

Let&#;s look at the most common materials in hydraulic fittings:

Steel Hydraulic Fittings

Steel is the most common hydraulic hose fitting material. It offers excellent strength and durability. Steel can withstand temperatures ranging from -65 degrees Fahrenheit to 500 degrees Fahrenheit.

Stainless Steel Hydraulic Fittings

Steel comes in various grades, mixing iron, carbon, and other metals (such as Chromium) to create tougher, more durable, or more corrosive-resistant metals. These fittings are used when the temperature rating requires ranges from -425 degrees to 1,200 degrees Fahrenheit.

Stainless steel is used for highly corrosive environments and can be rated up to 10,000 PSI, or even up to 20,000 PSI with special designs. Stainless steel hydraulic fittings are much more expensive than other materials but are the most reliable.

Plastic Hydraulic Fittings

Fittings made of plastic are very corrosion-resistant but weaker and less durable than other materials. They are affordable but do not hold up to high-pressure ratings or high temperatures. Because of their low durability, metal fittings are preferred.

Brass Hydraulic Fittings

Brass fittings are less durable than stainless steel. However, they can meet the required SAE, ISO, DIN, DOT, and JIS standards.

Brass fittings can handle temperature ranges from -65 degrees to 400 degrees Fahrenheit. Brass offers excellent corrosion resistance and can handle up to 3,000 PSI, but lower pressure ranges are usually recommended.

Aluminum Hydraulic Fittings

Aluminum fittings are lightweight and very resistant to corrosion. Aluminum fittings are less prevalent and durable than steel, but the automotive industry has embraced them due to offering an excellent strength-to-weight ratio.

How to Choose the Right Hydraulic Hose Fitting for Your Application

Industrial hydraulic hose fittings are essential for various hydraulic systems. Understanding the different types of fittings, the materials they are made from, and their typical applications is crucial for selecting the right fittings for your specific needs. Choosing the appropriate fittings ensures your hydraulic system&#;s safe and efficient operation, minimizing downtime and maximizing productivity.

The most important factors to consider when choosing the right hydraulic hose fitting include size, material, temperature range, and pressure requirements. You should also consider your application itself and what you need the fitting to do. Finally, if the fitting needs to be frequently connected and disconnected, you&#;ll need to find one with easily assembles and disassembles.

IBT&#;s Industrial Hose Products and Services

IBT&#;s Hose Division offers an unbeatable combination of quality hydraulic hose products and outstanding service. We maintain over a million dollars in inventory of industrial hoses, fittings, and accessories so that we have everything you need on hand. 

Contact us to discuss your requirements of 45°Metric Female One Piece Hose Fittings. Our experienced sales team can help you identify the options that best suit your needs.