What does DIN mean in hydraulic fittings?

Dec. 23, 2024

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News - What Are DIN Fittings? A Comprehensive Guide

DIN (Deutsches Institut fur Normung) fittings are an integral component of hydraulic systems, providing secure and leak-free connections between hoses, tubes, and pipes. In this comprehensive guide on DIN fittings we will examine what they are, their purpose, how they function, and why they&#;re crucial. Whether you are new to hydraulics or looking to broaden your knowledge base &#; this guide has everything you need!

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What Are DIN Fittings?

DIN, or German Industrial Standard fittings, are hydraulic fittings designed to connect hoses, tubes and pipes in hydraulic systems securely without leakage &#; essential in high-pressure applications. DIN fittings consist of three components &#; fitting body with tapered thread, nut with straight thread that matches up perfectly with the sleeve thread pattern, and sleeve with tapered thread pattern that matches up perfectly with its body thread.

How Do DIN Fittings Work?

DIN fittings work by compressing a soft metal sleeve around a hose or tube, creating a seal resistant to high pressure and vibration. The nut secured onto the fitting body then tightens down tightly ensuring a leak-free connection that&#;s ideal for high pressure applications. They&#;re easy to install or uninstall as well, making DIN fittings popular choices within hydraulic industry applications.

Types of DIN Fittings:

There are various kinds of DIN fittings, such as:

&#; DIN fittings use a cutting ring to compress onto the tube during assembly. With a 24° cone seat, they offer a secure connection against high pressures and vibration. These fittings are commonly used with metric-sized steel tubing.

&#; DIN fittings have a 24° cone seat like DIN fittings, but with an added O-ring seal. This combination ensures a leak-free connection in hydraulic systems. The O-ring provides a tight seal, resisting leakage under high pressure and keeping out external contaminants.

&#; DIN is a standard for metric tube fittings in hydraulic systems. They connect metric-sized tubes to pumps, valves, and cylinders. These fittings have a 24° cone and are used in high-pressure applications.

Advantages of DIN Fittings:

&#; High-pressure resistance

&#; Secure and leak-free connection

&#; Easy to install and remove

&#; Durable and long-lasting

&#; Can be used in various applications

Disadvantages of DIN Fittings:

&#; More expensive than other types of fittings

&#; Require special tools for installation

How to Install DIN Fittings?

Installing DIN fittings requires some specialized tools, but it&#;s a relatively straightforward process. Here&#;s how to install DIN fittings:

&#; Cut the hose or tube to the desired length.

&#; Slide the nut and sleeve onto the hose or tube.

&#; Insert the hose or tube into the fitting body.

&#; Tighten the nut onto the fitting body using a wrench or specialized tool.

&#; Check for leaks and adjust the fitting as needed.

Applications and Industries

For more information, please visit DIN One Piece Hose Fittings OEM.

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DIN fittings are widely utilized across numerous industries due to their adaptability and reliability. Here, we explore their applications within various fields.

&#; Automotive Industry: Widely utilized within applications related to brake and fuel systems. Their secure yet leak-free connection makes DIN fittings ideal for this use case.

&#; Aerospace Industry: This type of fittings have long been utilized in hydraulic and fuel systems, providing flexibility during high pressure or vibration environments while being resistant to corrosion.

&#; Marine Industry: Widely utilized for hydraulic and fuel systems. Their corrosion-resistant qualities make them an excellent choice in this environment, while being easily installed or removed.

&#; Construction Industry: Widely used for heavy machinery due to their high pressure tolerance and ease of installation/removal.

&#; Food Industry: Used extensively in food processing and packaging equipment due to suitability for direct food contact and easy cleanup.

Conclusion

DIN fittings are a key part of hydraulic systems, providing secure and leak-free connections that make high-pressure applications possible. DIN fittings are simple to install or remove from their connections, making them popular choices in the hydraulic industry. Working with hydraulic systems requires understanding what DIN fittings are, their purpose and importance &#; this comprehensive guide should give you more of an understanding about DIN fittings and their role within your hydraulic system.

Post time: May-26-

What Does DIN Stand for? - Brennan Blog

DIN fittings are the most common metric&#;hydraulic fitting&#;style in Europe, typically specified by DIN , DIN EN and ISO -1 standards. DIN stands for "Deutsches Institut für Normung", which is the German Institute for Standardization.&#;They are commonly used in oil & gas, construction and industrial hydraulic and pneumatic applications. Sizes range from 4mm to 42mm and are typically made of carbon steel or stainless steel. However, brass and some exotic materials can be used for specific applications, and they are often made by following different manufacturing standards.

Some versions of the German DIN Metric 24° Bite Type incorporate a captured elastomeric seal and metric DIN series hose fittings, DIN 60° cone, 45° cone and DIN and are the leading European threads styles for many applications.&#;

The DIN standards are used in connections such as:

Alternating valves which allow the flow to pass from either inlet 1 or 2 to the outlet port while shutting off the inlet port that&#;s not in
use
Check Valves
Compression and hydraulic hose fittings
Swivel and Banjo fittings

Material

DIN metric stainless steel 1. (316Ti) is the primary material for excellent corrosion resistance.&#;Stainless steel 316Ti and sometimes other exotic materials are used in conditions with high acidity and elevated salt levels, ch as offshore oil rigs. These materials provide a long service life, reducing the total cost of ownership and leading to lower maintenance costs.

Stainless steel 1. (316Ti) DIN fittings are ideal for harsh environments, along with Monel and Inconel, and used in extreme conditions such as the presence of:

Salt spray or saltwater submersion
Acidic atmosphere
Extreme heat or cold
Physical shock
Vibration

Carbon steel is also applicable in many common applications and provides very good corrosion resistance. For these applications, a specific zinc-nickel plating is applied that exceeds U.S. and international corrosion resistance standards-- such as VDMA class K5. When tested to hours of exposure to salt spray zinc-nickel plated carbon steel, they should not show any traces of red or white rust, allowing them to present:

Good
paintability
High levels of abrasion protection
Very good temperature stability
Low corrosion when in contact with stainless steels or aluminum

Applications and Industries

As with other hydraulic fitting thread styles, DIN metric bite-type fittings are widely used in industries and fluid power applications, such as:

Agricultural equipment
Construction equipment
Industrial machines
Oil & gas
Drilling platforms
Hydropower plants
Railway technology
Recycling equipment
Shipbuilding
Machine tools
Wind turbines
Material handling
Mining equipment and hydraulic supports holding up the mine roof

DIN Pressure Series

DIN fittings are available in three different pressure series classifications:

LL for very light pressure applications
L for light pressure
S series used in high pressure systems

Each is identified by measuring the pitch, thread size and tube OD and referring to a pressure guide to confirm classification.

Conclusion

DIN are the worldwide standardized metric thread, and is the most widely used fitting in Europe, surpassing any imperial (inch) thread style.

Many OEMs are increasingly choosing DIN metric (along with O-ring face seal) due to their ability to withstand higher pressure ratings many of today&#;s applications require. Even the popular JIC fitting is not rated for many of these pressures, particularly applications that experience high vibration.

In fact, with their increased global popularity, many U.S. OEMs are incorporating DIN fittings, particularly in equipment being marketed in Europe. This, along with the rise in equipment being imported from Europe into the Americas, is causing DIN metric fittings to become more common in U.S. MRO applications, thus increasing their presence in &#;maintenance bins&#;.

This blog is an excerpt from our newest Bluprint "Standards, Applications & Styles of DIN Metric Bite-Type Fittings & Valves". Click here or below to get your Bluprint!

If you're interested in our line of DIN Fittings, click here to download our catalog.

You can also view our product collection on our website by clicking here, or check out our DIN Cap & Plug Kits by clicking here.

Sources Include:

If you are looking for more details, kindly visit One Piece Fitting.

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