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Hydraulic

A primer on hose fittings materials

May 23, 2025 By Mary Gannon Leave a Comment

Forged steel fittings

By: Josh Cosford, Contributing Editor Editor’s Note: This is the first in a multi-part series on materials used in fluid power hose fittings. We will cover carbon steel, stainless steel, brass and plastic. Fittings and adapters used in fluid power are manufactured using various materials selected by designers to suit the specific needs of the […]

Filed Under: adapters, Featured, Fittings, Hydraulic, Pneumatic

How to ensure proper hydraulic fitting assembly

August 13, 2024 By Mary Gannon Leave a Comment

Proper-hydraulic-fittings-assembly-1_PipeFittings

Contributed by Gary Molton • BSc, Owner, Engineering Adventures Poor assembly or using the wrong type of fluid power fitting has been shown to increase risk of fluid leakage and industrial injury. Fitting designs have changed considerably over the last 30 years to reduce these risks but this has resulted in a myriad of assembly […]

Filed Under: Featured, Fittings, Hose Assembly Blog, Hydraulic Tagged With: engineeringadventures

When to use (or not use) BSPT fittings?

August 7, 2024 By Mary Gannon Leave a Comment

NPT versus BSPT fittings chart

By Josh Cosford, Contributing Editor If you’re not terribly familiar with hydraulic fittings, you may think BSPT is a typo. Is it supposed to be BSPP (British Standard Pipe Parallel) or perhaps NPT (National Pipe Thread)? No, it’s not a typo – we’re actually talking about British Standard Pipe Taper, which is the version of […]

Filed Under: Featured, Fittings, Hydraulic

Are field-attachable fittings truly reusable?

May 3, 2024 By Ken Korane Leave a Comment

Parker Hannifin's field attachable fittings include Push-Lok style fittings as well as two and three-piece series fittings designed to decrease downtime and exceed expectations.

Hydraulic hose fittings are essential components in countless stationary and mobile machines. The parts are critical links in fluid-power systems, designed to ensure safe and reliable operations and prevent equipment shutdowns, catastrophic failures and danger to nearby personnel. And in the hydraulics world, there are generally two types of hose fittings — permanent and reusable […]

Filed Under: Featured, Fittings, Hydraulic, Industry News

What is the proper torque for hose assemblies?

May 3, 2024 By Mary Gannon Leave a Comment

Figure 1. Compareing thread size to Flats From Wrench Resistance (FFWR) recommendations.

By Josh Cosford, Contributing Editor When installing hydraulic hose assemblies, if tight is good, then tighter is better, right? To be sure a hydraulic hose never accidentally loosens during operation, should we get the biggest pry bar we can find to help lock that hose fitting in for good? Not precisely — torquing your hose […]

Filed Under: Featured, Fittings, Hydraulic, Hydraulic hose

When should you use reusable hose fittings?

October 5, 2023 By Mary Gannon Leave a Comment

Reusable hose fittings require careful installation and proper torque to ensure a secure connection that prevents leaks. Proper installation is critical to ensure a secure and reliable connection.

By Josh Cosford, Contributing Editor Hose fittings, also known as hose ends, are critical components of hydraulic systems as they connect hoses to the system’s various fluid ports at the pumps, valves and actuators. There are two primary styles for hose end fittings: permanent crimped-on and field-serviceable screw-on, also known as reusable hose ends. This […]

Filed Under: Featured, Fittings, Hydraulic

A review of hydraulic fittings and flanges

August 2, 2023 By Mary Gannon Leave a Comment

JIC fittings Image courtesy Tompkins

By Josh Cosford, Contributing Editor Improper selection or improper use of hoses, tubing, fittings, and assemblies can result in machine failures, leaks, personal injury, or even property damage if the failure is catastrophic. Understanding your plumbing standard chosen for your hydraulic system, and following the generally accepted installation standards reduces the chance of failure and […]

Filed Under: Featured, Fittings, Hydraulic

How can metric fittings provide hydraulic system leak protection?

May 24, 2023 By Mary Gannon Leave a Comment

Stauff-Metric-Stud

By Josh Cosford, Contributing Editor We use metric fittings to connect and seal hydraulic valves, pumps or actuators to their respective plumbing in a metric-based circuit. They prevent leaks in hydraulic systems by providing a leak-free seal at the component’s fluid port. There are several types of metric fittings, including compression fittings, flare fittings, bite-type […]

Filed Under: Featured, Fittings, Hydraulic

What are the different standards for metric hydraulic fittings?

May 24, 2023 By Mary Gannon Leave a Comment

Figure 1. DIN 2353 (Figure 1) is a standard for compression fittings used in hydraulic systems.

By Josh Cosford, Contributing Editor Several standards for metric hydraulic fittings exist, including DIN 2353, ISO 8434-1, ISO 6149-1, and BS EN ISO 12151-2. Each of these standards has its unique features and specifications, which are essential to know. They ensure that the fittings used in hydraulic systems meet the required standards and are compatible […]

Filed Under: Fittings, Hydraulic

How do you install metric fittings?

May 22, 2023 By Mary Gannon Leave a Comment

Tee fitting join together three metric tubes at 90 degrees. Standard versions connect three tubes of equal diameter, Tee reducer fitting can accommodate up to three different diameters.

By Josh Cosford, Contributing Editor There are no secrets here, but installing metric hydraulic fittings depends on the type of fitting being used. You will need several tools to install them. Generally, you will need various wrenches, a hose cutter (if you’re making metric hose assemblies), a deburring tool, and, in some cases, thread sealant. […]

Filed Under: Fittings, Hydraulic

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Editorial Director Paul Heney

Paul Heney

Paul J. Heney, the Editorial Director for Design World, has a BS in Engineering Science & Mechanics and a minor in Technical Communications from Georgia Tech. Heney has more than 20+ years of experience in the fluid power industry, covering pneumatics, sensors, air preparation, pneumatic systems, valves and the whole spectrum of fluid power technology.

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