Audiologists typically configure BTEs by choosing between an earmold or dome and adding a vent that opens or closes depending on each listener’s hearing loss.
Fittings are composed of more expensive materials and manufactured to more stringent tolerances, while JIC fittings (SAE 37deg flared fittings) use a universal class 2A/2B UN/UNF thread.
Seal Right Fittings
Hydraulic systems and industrial equipment rely on fittings with superior seal strength and corrosion resistance, helping prevent leaks while decreasing downtime and providing better performance for their machinery. One type of fitting that may help is the SAE J1453 ORFS (O-ring Retained Face Seal) fitting.
These fittings are specifically engineered to accommodate multiple tubing types, sizes, and materials. Due to their durability and adaptability, they’re often the go-to option in numerous applications – particularly vibration-prone environments or fluid systems with fluctuating pressure levels.
ORFS fittings feature an innovative design that ensures they create an optimal seal. Their flat face makes non-metal contact with mating components, eliminating twisting and torque that could cause premature wear or leaks. To ensure proper seal, O-rings must be correctly sized and placed into grooves on fitting bodies to create appropriate sealing; in addition, keeping these clean and lubricated can further minimize wear-and-tear issues.
ORFS fittings offer excellent solutions for many different applications; however, their use may present unique challenges when coupled with other fitting standards. Combining different appropriate standards may result in premature wear and loss of seal strength, leading to leaks if interfacing them is done without understanding their technical nuances first.
When installing and maintaining ORFS fittings, always follow the manufacturer’s recommendations for installation and maintenance. Doing so will allow you to avoid common blunders that damage or degrade O-rings while shortening the seal life span. Such mistakes include using an incorrect O-ring size, applying too much force when tightening, or failing to conduct regular inspections.
Other mistakes commonly made during installation include using inappropriate cone and threading tools, disregarding manufacturer recommendations, and failing to conduct an extensive pressure test. Any of these errors could reduce fluid flow or cause leaks. It is vitally important that any such issues are corrected immediately in order to prevent damage or leaks occurring later.
Anti Blowback Fittings
Fieldpiece anti-blowback fittings can be an invaluable aid in cutting downtime and increasing efficiency. These access fittings pair perfectly with regular service hoses and have thrust-bearing fittings with thrust bearings that eliminate friction for effortless hose connection even under pressure. Low-loss seals prevent leakage when disconnected, helping meet non-venting regulations and avoid finger burns. Their compact design fits easily in tight work spaces while their deep square knurling ensures a solid grip even with dry, wet, or oily fingers. These assemblies from Clip Light Manufacturing are UL-recognized assemblies (File SA9737) with an anti-deterioration gasket for CFC, HCFC, or HFC refrigerants that currently exist on the market. Model 20122 Reusable Dye Injection Hose with Anti-Blow Back Low Loss Fitting has a maximum working pressure of 800PSI.
Vacuum Hose Fittings
Vacuum hoses connect the vehicle’s vacuum pump to components like the brake booster, positive crankcase ventilation (PCV) valve, and HVAC control system. Maintaining leak- and crack-free vacuum hoses is essential to the proper functioning of its engine, braking system, and heating/cooling systems. Although you could replace damaged lines entirely with new ones, sometimes repairs may be more straightforward and require using tools and parts available from manufacturers to do this effectively. Determine what sealing method would work best given its size and location of damage before beginning repairs.
Some vacuum fittings are designed to allow easy disconnect and reconnect without losing vacuum pressure, such as quick connect hose fittings and vacuum bag connectors with locking mechanisms to ensure secure fitment. This can be especially useful when changing out infusion mesh for an autoclave quickly.
Other vacuum fittings, like this cam-lock style shown here, require sealants such as PTFE tape or liquid thread sealant in order to create a full vacuum-tight connection. If using PTFE, however, it is recommended to wrap the entire fitting with tape in order to protect itself against possible contamination.
Use quick-connect fittings like the QC-2 series quick-connects for seamless connections and disconnections without the use of tools, like Parker BH or Hansen HK/HDK series quick-connects; they feature double-end shutoff to prevent vacuum pressure loss as well as being made from corrosion-resistant stainless steel with VITON seals for improved reliability.
NLB provides a complete selection of vacuum hoses and fittings that allow our HydroPrep tools to connect to virtually any vacuum source. In our composites shop, small-diameter hoses with NW fittings are usually the go-to choice, as these provide ample flow. In cases when more significant amounts of air need pumping are necessary, however, large diameter clear wire reinforced PVC hoses with NW fittings may be more cost-effective as well as offering room temperature use (although you may require a hose clamp for security).
Check Gauges Fittings
Have you ever encountered a car with its Check Gauges light illuminated? This indicates that one or more gauges in your vehicle are malfunctioning; the issue could range from charger circuit irregularities to low oil pressure levels.
As mentioned above, there’s an easy way to identify which connection type a pressure gauge has without taking apart its instrument: look at its threads. Male NPT connections have tapered threads, while female G connectors feature straight threads with an additional nipple on one of their female ends that distinguishes it from an NPT connection. You can even use calipers to measure this angle: NPT thread angles measure 60deg while 55deg are typical G thread angles.
One quick and easy way to identify an NPT connection is by simply looking at its socket. NPT sockets feature red rings while G sockets boast blue inspection rings; some manufacturers even make fittings with blue inspection rings that snap off once tightening has reached optimal level – eliminating gap gauge needs while providing visual proof that fitting has been adequately tightened.
Gap gauges can be valuable tools, but they must be handled carefully, or they could become inaccurate. Too much tightening may cause leakage from the gage, while overtightening can damage threads on male NPT fittings. Gap gauges may help avoid these problems, but a more professional tool called a go/no-go gauge delivers more precise readings and gives users greater assurance that their fitment meets specifications.
Superlok i-Fittings provides another efficient solution to ensure tube fittings are tightened correctly by having an easily visible red ring when installed, but once pulled to specification, the red ring snaps off to reveal a blue visual inspection ring, which tells users they have tightened correctly, and ensure there are no leaks – providing users with an inexpensive yet effective method to avoid mistakes and ensure maximum results with their new tube fittings.
