Male Hydraulic Adapter

Materials Used to Male Hydraulic Adapters

The materials used to manufacture a male hydraulic adapter is vital for a hydraulic hose to properly and safely move the hydraulic fluid. It is the high-pressure ratings in hydraulic systems that generally require metal male hydraulic adapters over plastic ones.
The corrosive or rusting effect a hydraulic fluid has towards a metal is an important reaction to consider when selecting a hydraulic male hydraulic adapter. Hydraulic hoses and male hydraulic adapters should be accurately matched to work with an application's hydraulic fluid.
Carbon steel male hydraulic adapters are durable, strong, and has a high resistance to heat, with a temperature range of –65° to 500°F (–54° to 260°C). Carbon steel is combined with other metals to achieve higher levels of strength. Male hydraulic adapters made from a carbon steel combination are normally coated with transitional metals to fortify against environmental, corrosive surroundings. Industrial, construction, and agricultural equipment have the most applications that require carbon steel male hydraulic adapters to withstand high pressure, deliver high strength, and offer low cost.
Stainless steel male hydraulic adapters are strong and have excellent chemical and corrosion resistance with a temperature range of –425° to 1200°F (–254° to 649°C). These male hydraulic adapters work well with corrosive hydraulic fluids and resist environmental corrosion. Stainless steel male hydraulic adapters are the preferred choice over carbon steel male hydraulic adapters at low temperature. Even though the stainless steel male hydraulic adapters are higher priced, the corrosion resistance is imperative to a multitude of applications: oil, gas, and offshore equipment, chemical processing, food manufacturing, medical and instrumentation, agricultural fertilizer, and marine applications.
Brass male hydraulic adapters have moderate strength and toughness, and good corrosion resistance with good ductility at high temperatures with a temperature range of –325° to 400°F (–198° to 204° C)." brass is a softer metal, and it easy to alter. Because of the lower strength against high temperatures of this metal, applications rated for lower pressures can use brass male hydraulic adapters.
Aluminum male hydraulic adapters offer lightweight and corrosion benefits while withstanding temperatures –325° to 400°F (–198° to 204°C)." combining with transitional metals, a male hydraulic adapter's strength is increased. Applications with moderate pressure ratings can benefit from aluminum male hydraulic adapters with it media compatibility. The lightweight factor of these male hydraulic adapters is vital for aerospace, military, and automotive applications.

6 Common Problems Impacting Male Hydraulic Adapters

Steps to Identify Male Hydraulic Adapters

Machines and equipment are designed and manufactured in every corner of the world. The hydraulic systems alone use countless different types of fittings and adapters with different sealing methods and thread forms. While the sealing method can often be distinguished by appearance, thread forms all seem to look the same, making it difficult and time consuming to identify them when equipment modifications or repairs are needed.
Knowing the correct thread is critical for selecting the right replacement parts for maintenance and repair. Selecting the wrong part can result in damage to the thread during installation, which compromises the pressure holding capacity and seal reliability of the fitting or adapter. Quickly and properly identifying threads can help maintain safe, productive, and profitable operations.
There are six types of threads commonly used on hydraulic tube fittings: UN/UNF, NPT/NPTF, BSPP (BSP, Parallel), BSPT (BSP, Tapered), Metric Parallel, and Metric Tapered. Four simple steps will help you identify them.

 

Step 1

Determine if the thread is tapered or parallel. NPT/NPTF and BSPT are tapered threads while UN/UNF and BSPP are parallel. Metric tapered and metric parallel speak for themselves. In some cases, step 1 can be accomplished by visual inspection alone. Tapered threads get smaller in diameter toward the end of the fitting while parallel threads maintain the same diameter from start to finish. If this is not obvious by looking at the fitting, use the parallel jaws of a caliper to make a comparison. Furthermore, the presence of an O-ring or the removal of a tube nut is usually an indication that the male thread is parallel. Completion of step 1 will eliminate three of the six possible thread forms.

 

Step 2

Determine the pitch. This can be deciphered using a pitch gage for comparison or by accurately measuring and calculating the number of threads within a given distance. It is much easier to compare threads against a lighted background with a pitch gage. Because some thread pitches are relatively similar, it is advisable to try a number of gages before deciding which one fits best. The result from step 2 will narrow down the possible thread forms even more because most have a distinct pitch.

 

Step 3

Determine the size. Combining the results of steps 1 and 2 will determine – or help predict, in some cases – the correct procedure for step 3. There are two methods for
determining the thread size; which to use depends on whether the thread is a pipe thread (NPT/NPTF, BSPT, BSPP) or is not a pipe thread (UN/UNF, metric parallel, metric tapered). Keep in mind that tapered (as determined in step 1) does not necessarily mean that it is a pipe thread (e.g., metric tapered). Likewise, pipe thread can be parallel (e.g., BSPP).
For pipe thread, determine the size by comparing it with a nominal size profile, as shown in figure 1 (a useful tip – pipe sizes up to 2-inch nominal size can be determined by measuring the actual outside diameter, subtracting a quarter inch, then rounding off). For nonpipe thread, the actual size can be determined by measuring the outside diameter (major diameter) with a caliper.

 

Step 4

Designate the thread. Technically, this final step does not pertain to identifying the thread. Rather, it is a method of designating the thread type in an industry standard format for others to understand. Examples of the various formats are shown in the step 4 column. These typically have an indication of the thread size (whether nominal or actual), the type and, in some cases, the pitch.