Straining for Relief

As I put fingers to keyboard to write this blog, I’ve recently thrown away my second lightning charging cable since purchasing a new smart device late last year. To say that writing a blog about strain relief was kismet before pitching the cable in the waste can, has to be the understatement of 2017. All of which is a near-perfect segue into the importance of strain relief solutions for plastic tubing assemblies.

If it helps, think of strain relief as a boot or jacket one slips over a delicate plastic tube, increasing its life and mitigating leaks.

In the world of in vitro diagnostics, strain relief solutions relieve tubing of stresses and tensions that may cause the tubing to bend, kink or twist — thereby limiting its inner diameter and impeding fluid flow — which could lead to leaking.

Factors to consider when incorporating strain relief solutions into a design include the size and material of the tubing, the mobility requirement for the tubing, the interaction of the strain relief material with the tubing, and the space available inside the instrument. Standard strain relief options might include springs, spiral wrap, heat shrink or formed plastic sleeves. Another option is to thermoform the entire assembly to avoid unwanted compression.

In addition to limiting leaks, the benefits of strain relief solutions include:

  • Enhancing flex-life performance by limiting over-flexing
  • Preventing kinking
  • Mitigating abrasion
  • Promoting positive fluid flow

For design engineers working on next generation diagnostic instruments, incorporating strain relief solutions early into a design may help one to achieve the accuracy, performance and cost parameters of a project.

Diba delivers exceptional fluidic outcomes across an entire system fluid path. Our proven expertise designing and manufacturing precision fluidic handling systems ensures optimized performance, reliability, and superb field serviceability of instruments in laboratories around the world.

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Diba is Fluid Intelligence!

No Tools. No Guesswork. No Worries. No Kidding.

Diba’s patented Click-N-Seal® fittings are the only multi-use, finger-tight fittings that cannot be over or under-tightened, eliminating the need for guesswork, even within low pressure connections.

The user is able to hand tighten the fittings without tools or guesswork and be confident that the fitting is properly seated, creating a secure seal without damaging the port through over tightening.

Best of all, the fitting can be unscrewed and reused dozens of times and works great in small spaces.

In fact, our versatile range of fittings and terminations allow you to make various types of connections quickly, easily and reliably.

Adopt Click-N-Seal into your tubing assemblies and rest assured you will have secure, leak-free connections every time.

Diba is Fluid Intelligence!

IVD Market Diagnosis

Diba Industries, Inc. was prominently featured in a recent Medical Product Outsourcing magazine article titled IVD Market Diagnosis. This article succinctly sums up the IVD market and the impact of technology upon it.

Additionally, as the article correctly points out, the IVD market is “… a very dynamic market that is quickly evolving and reacting to market trends, OEM needs, and emerging markets.

 

 

The Devil Is In The Details

An Example Of What To Watch Out For When Designing A Positive Bottom Seal Connection

Design Engineers concentrate on the materials they need to use for the connector and port, ensuring chemical compatibility. They also focus on the size of the connector, making sure that what protrudes out of the port will not interfere with other components.  Oftentimes not enough attention is given to the port and thread depths. Here “the devil is in the details,” and a positive bottom seal connection is dependent upon those details.

First Things First
To begin, ask yourself two crucial things: How deep is the overall depth of the port? And, how deep is the thread on the port?  When tapping (threading) a port, it’s not feasible to have a full thread – as the threading die will not allow it.  However, the thread can’t simply stop at an unspecified depth:  if it’s too shallow the sealing face of the connection (i.e., flare or ferrule) may not reach bottom and result in a leak.

devil-is-in-the-detailsNext, match the depth of the port with the length of the connector on the mating assembly. Take into consideration not only the length of the thread of the connector, but also the boss (unthreaded portion of the fitting) as well as any added component lengths (i.e., washer, o-ring, ferrules, etc.).

A fluidics system’s design must take into account even what may be perceived as an ordinary feature. Many times, fluid line connections mistakenly fall into that category.  And without a properly designed fluidic connection, the system will not operate to its full capacity or worse:  it could leak.

For your design to be successful, pay close attention to the fluid connection details and you might just save you and your design from you know who.

We’d truly enjoy hearing from you! If you have anything to share on Go With The Flow, feel free to drop us a line!

Like what you read here?  Follow us on our LinkedIn Company Page and The Fluidic Group, Facebook and Twitter, and repost this blog.

Diba … Fluid Intelligence!

 

 

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