ngth 32046 The material used to

2021/05/21

/Length 32046 The material used to make an air hose will drastically affect its flexibility, weight, performance and durability. The sealing mechanism of the G type fitting will be a sealing ring or O-ring placed over the thread of the fitting and butted up to the base of the wrench flats. will do the job whether the hose length is 25 or 150 feet. aeroquip monroeaerospace Most compressed air system fitting sizes follow the NPT (National Thread Tapered) standard, while others use Metric fitting standards, both denote the thread size but are different. The boss could be in an air tool, an air valve port, an air cylinder port, an air manifold, or any number of other compressed air components all of which it is necessary to thread one or a number of air fittings in order to plumb them for working with compressed air.Compressed Air Fittings. It is not always easy to tell them apart. I have seen some that claimed to be, but they did not provide adequate thread-depth penetration or sealing.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'about_air_compressors_com-leader-1','ezslot_10',123,'0','0'])};if(typeof __ez_fad_position!='undefined'){__ez_fad_position('div-gpt-ad-about_air_compressors_com-leader-1-0')}; Do yourself a huge favor and keep your metric air fittings stored away from your NPT air fittings. closest value). trailer PLEASE CONTACT US IF YOU WOULD LIKE TO REPRODUCE OR REPUBLISH PORTIONS OF THIS DOCUMENT. For a male thread, measure the outer diameter (OD) of the thread. 0000075120 00000 n Topring offers several types of flexible hoses. The threads on this style will likely be shorter in length than other types of metric fittings. This reduces the distance between the air supply source and the tool, but also reduces potential pressure loss while providing enough airflow for the tool to operate properly. One manufacturers fitting can be replaced with the same NPT size fitting of another manufacturer, and both assuming they are the same size will fit the same threaded hole in your air cylinder, actuator, air tool handle, valveor whatever the application is. After determining your measurement choose the closest ID or 0000034990 00000 n 0000255289 00000 n hole were you would like to install the fitting or the outside diameter (OD) of The actual diameter of the 1/4 NPT thread will be just over 1/2.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'about_air_compressors_com-box-4','ezslot_6',120,'0','0'])};if(typeof __ez_fad_position!='undefined'){__ez_fad_position('div-gpt-ad-about_air_compressors_com-box-4-0')}; The size of an NPT fitting, the 1/4, the 3/8, 1/2, and so on, are reference sizes. 1020 Boul. Compare that result to the fractional sizes on the chart to help guide you to the right male-threaded NPT fitting size to use. If that is not the case, protect them by installing a safety valve from Series 09. If you can help another visitor with a question they have posted, wed all appreciate it. 0000071045 00000 n Wed welcome it here!, https://www.about-air-compressors.com/comments/feed/, Designed by Elegant Themes | Powered by WordPress, Porter Cable Air Compressors Information, Manuals, Service Locations, United States Air Compressor Company Compressors, Oilless Air Compressors vs Oil Compressors, Air Compressor Motor Guide HP, Types & Where to Buy Compressor Motors, Air Compressor Pressure Switch Troubleshooting & Buying Guide, What Size Air Compressor Do I Need? For simplicitys sake, these have been separated into 4 steps. To determine the size of pipe fitting thread you need, first For our complete selection of flexible hoses, visit the S70-78 Flexible Hoses section on the website. When a pressurized flexible air hose ruptures, compressed air escapes uncontrollably. 0000002343 00000 n Electro-Pneumatic Regulator & Flow Controller Design. The reason for this is that the G-type fitting is designed to screw right down into a boss.

HVn0gx0Z})Hd{ma%r9a`5 $ Q[/:;ZD %o=RM/oZ(q9j'E(4=I! @ZzV ;ZQn@Z3SEC@qsuv&9KFt\OOsGSt;C5eLXjSu`;jGH]oX7;BbG)YG%g4.0(%0afI,n}T/ `7(0-IsNp p1(SLG%SrYyXZ,kR)3K7`^uvcPET0A>i"~sJVf}q\_2MRo+qeh2s]5{GJA-|^4\Jc3kl BJ V@jS4|T:SH}sLwD|Uq.J[cITE-\0Y-7>aE3' GSA' 9)YN}=G=zzj sPCpg{Rk< \sT@kaj/{bhuN7Md:C"> If your tape measure shows the top (yellow) measurement then you need to order the measurement in the bottom (purple) area . 0000004073 00000 n A swivel elbow is NOT a rotary device. xref It shows the comparison between NPT fitting sizes and their actual inch equivalents.

0000069678 00000 n hoses hose end fittings pressure length air bend It refers to an industry designation Like the PTFE tape, this sealing compound allows the NPT threads to seat further into the boss thread, allowing greater thread-to-thread contact inside and filling micro-voids and unevenness in the threads to improve the seal. However, these are not tapered the same way as the NPT threads are, they are metric. Compressed Air Dryers Guide Which Type of Air Dryer Do I Need?

For more information or help in selecting a flexible air hose, please contact a technical adviser by calling 1-800-263-8677 or sending an email to [emailprotected]. Any part of the system that prevents airflow will be problematic for the entire system. Its not even close. 0000036268 00000 n the outside diameters of the pipe fitting. Quick Exhaust Valves, Check Valves, Flow Controls. Consider how much length is needed so that the tool is easy to use. To find the correct fitting size of your compressed air fittings,it is generally advised to measure the outer diameter of the threads. For example, nailers and staplers operate with less than 0.10 SCFM/cycle, so a -inch I.D. Measure the outer diameter of the thread, then look up the table below for the next nearest nominal pipe size. Pipe fitting size refers to the pipe size that the fitting fits to. All of the cylinders, fittings, and parts we carry indicate

If the material is not suitable for the working environment where it is used, it will deteriorate rapidly or perform poorly. IS WARNED TO CONSIDER THE FAILURE MODES OF ALL COMPONENTS USED IN THE DESIGN AND ENGINEERING OF ALL SYSTEMS AND TO PROVIDE ADEQUATE Your email address will not be published. Want to brag about your gorgeous compressor rebuild? . 70 0 obj <>stream 0000048074 00000 n Can you please provide a bit more info about specifically what you are trying to plumb? Hey! The common classification for METRIC fitting sizes are G type, and R type threaded fittings. /BitsPerComponent 8 0000070619 00000 n %PDF-1.4 % hb``g``;H01G>30H2120naavl=,(`{ao#qUV0000p3a4 tG MW The R-type metric threaded fitting has a taper, similar in concept to the National Pipe Taper thread (NPT). Listed below are some quick reference charts that we hope 0000255566 00000 n When you disconnect an air hose, the coupler closes to prevent air from escaping. Yes indeed, it can be quite a dance to get from 1 to 1/4 in fittings. JavaScript seems to be disabled in your browser. The maximum working pressure of the hose must be greater than that of the pneumatic tool or equipment. When you remove the airline, you should hold it tightly as the coupler will abruptly expel the tool as compressed air begins to escape. White Paper-How to Design Efficient Pneumatic Systems. << Scs assumed (based on copyright claims)., Public domain, via Wikimedia Commons.

0000048556 00000 n 0000036107 00000 n /Filter[/FlateDecode] The fitting they will show you will most likely be a 1/4 NPT. 0000255654 00000 n 0000035509 00000 n delivers 3 times more flow than a I.D., while a I.D. Couplers and plugs go hand in hand. delivers twice the flow of a 3/8. OD dimension listed in the chart below and select your pipe thread size. The red tape found on compressed air brass fittings is likely to be PTFE (polytetrafluoroethylene) thread sealant tape. 0000048099 00000 n Flexible air hoseshave different capacities. Industriel Granby, Qubec J2J 1A4, How to choose a compressed air hose in 4 steps, Air Tank and Compressor Safety Check Valves, Reference Table for Flexible Hoses per Pneumatic Tool Type and Air Consumption (PDF), Average consumption (actual consumption may vary), Data for new flexible air hoses exempt of contaminants (water, rust, dust), Information based on a maximum 5 PSIG pressure drop, Cracking and breakage that causes air leakage, Also available with S79 Polyreel hose reel, Also available with S79 SteelPro, TopReel or TopReel HD hose reels, Lock-on fittings for easy maintenance and servicing, Also available with S79 ToopReel HD hose reel. /Height 82 Airline / Tube sizes correspond to actual measurements. R-type metric fittings come in a variety of thread sizes, the commonest of which are: As with other styles of compressed air fittings, larger fitting sizes in the R-type are available. Without a careful assessment of the system, clamps and couplings can be subjected to pressures beyond their rating which can cause problems. A reel also makes it easier for users to access the compressed air hose and increase worker efficiencyno more time wasted unraveling kinks!

Remember that the I.D. The purpose of the typical elbow fitting is NOT to allow a continuous movement of the swivel as the equipment moves. _C#vk}ON.oHH@? 0000048760 00000 n 0000034730 00000 n 0000047731 00000 n Due to the fact that there are now so many different compressed air fittings, manufacturers have come to recognize how difficult it may be to find the one you need. WTWH Media LLC and its licensors. 0000010519 00000 n 0000255711 00000 n

0000097418 00000 n series s2 refrigerant window close inclusion low air fd obtained elsewhere and you don't know what the proper thread and airline sizes

the proper thread and airline (tube) sizes to use. How can i reduce my air fittings from 1 inch to 1/4 inch having a hard time with this they dont sell the reducer for this so i tried to reduce the 1 inch to 3/4 then to 1/2 then to 1/4 but seem to be struggling please help thanks. to help determine proper fit: Finding the thread size with a tape measure. 0000001636 00000 n AND SAFE INSTALLATION, OPERATION, AND MAINTENANCE OF THESE PURCHASED PRODUCT(S). Whichever style coupler you choose, you will need to choose the same style plug to be able to connect them. 0000036176 00000 n Check and be sure before buying into this concept. For the best experience on our site, be sure to turn on Javascript in your browser. The larger the inside diameter, the greater the airflow (SCFM). The sizes listed above are the commonest fittings in industrial compressed air applications.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'about_air_compressors_com-large-leaderboard-2','ezslot_9',122,'0','0'])};if(typeof __ez_fad_position!='undefined'){__ez_fad_position('div-gpt-ad-about_air_compressors_com-large-leaderboard-2-0')}; When you thread the fitting into the hole in the valve, cylinder, or air tool, the NPT type thread seals by threading into penetrating the threaded boss (the threaded hole) until it is tight. Air fittings often come with pressure ratings to help minimize issues with leaks and potential pressure drops. 0000255800 00000 n Some manufacturers use different color release rings for their metric fittings. THE USER ACKNOWLEDGES AND WARRANTS THAT IT BEARS FULL AND COMPLETE RESPONSIBILITY AND LIABILITY FOR THE FINAL DESIGN OF /Width 163 Air compressor fittings are essential to keeping your unit running efficiently and delivering the air power you require for your operations. 4 0 obj <> endobj Thats the distance across the middle of the opening. For a male thread, measurethe outer diameter (OD) of the thread. Since there is enough slop in a couple of the metric-sized fitting threads, they can actually be screwed into an NPT threaded boss. Important : Keep in mind the location where you will be installing the flexible air hose and the application for which it will be used. Always choose a hose length that balances maximum manoeuvrability for the pneumatic tool and as little pressure loss as possible. 0000001897 00000 n Each has distinct advantages. THE SYSTEM DESIGNER However, a 1-inch impact tool that needs 87.5 SCFM to operate properly will require a -inch or 1-inch I.D., depending on whether the hose length is 25 or 150 feet. Some compressed air professionals prefer not to use this tape. 1 0 obj 0000005799 00000 n That typically means that sufficient threads on the fitting are interlaced with sufficient threads in the boss to generate a seal between the threads. /Type/XObject

Alternatively, you can purchase liquid thread sealant to add to the threads of your fittings before you thread them into a boss. 0000256240 00000 n HV;@+R#]g2/ Since compressed air flows very rapidly, sometimes pieces of the Teflon tape can break off in the air turbulence inside the fitting and create problems downstream by lodging in other air components. ANYTHING THAT INCORPORATES THE PURCHASED PRODUCTS, INCLUDING FULL AND COMPLETE RESPONSIBILITY AND LIABILITY FOR THE PROPER 0000070230 00000 n Before choosing your flexible hose, make sure you know the work environment and material compatibility requirements. COPYRIGHT FRIGHTPROPS, LLC. l1C5LP1wHwP#6i{7_qBN66* 6` The following reference table indicates the air flow rate (SCFM) based on the length/diameter correlation of the compressed air hose. ), The way the hose or tube is to be connected to the fitting. If you do use it, just be careful to keep the tape wound well back from the end of the fitting thread, and do not let the Teflon tape overlap air passages when the fitting is threaded into the hole. 0000255858 00000 n For instance, when you plan on using a hose mostly outside or in a cold room, choose a material designed to stay flexible. 0000008722 00000 n It aids in helping brass fittings connect together along with forming a tighter seal. You can avoid this eventuality by ensuring that the coupling chosen for the application has a higher rating than the anticipated maximum pressure. 0000002605 00000 n If the quick-release couplings are exposed to spikes, they will eventually break down the locking elements of the component. A compressed air hose is ill-suited to its environment or application if you see: Additionally, the fluids (air, water, acids, oils, steam, etc.) This page will provide all the relevant information on compressed air fittings, including both NPT fittings and metric fittings.

Most flexible hoses are designed to withstand a pressure of at least 200 PSI. Choose the inside diameter sizing based on the length of the compressed air hose (see Step 1) and on the air consumption of the pneumatic tool or equipment. Couplers come in a wide array of styles and sizes, including those designed for automotive, industrial, ARO, and V-style. If you find a true universal fitting, do let me know and Ill note it here. Sizing An Air Compressor, Sizing An Air Compressor For Impact Wrench, Sizing An Air Compressor For Spray Painting, Sizing An Air Compressor For Double Acting Air Sander, Sizing An Air Compressor For An Air Stapler, Sizing An Air Compressor For Sandblasting, Spray Texture Gun Air Pressure Requirements, Sizing An Air Compressor For Car Detailing, Air Compressor Troubleshooting, Solutions & Common Problems, Air Compressor Repair DIY & Repair Centers, Why An Air Compressor Wont Build Pressure, Air Compressor Keeps Tripping Circuit Breaker Solved, Air Compressor Reset Button Keeps Tripping? I recommend you select a quality-built Rotary Union, one with ball bearings in its construction to allow easy, continuous rotation, one that has the proper seals necessary to ensure reliable, often high speed, continuous rotation without fitting failure or air leaks. For example, you would choose a long hose to paint a vehicle in a large body shop, but a short compressed air hose for a fixed workstation requiring fewer movements. When air consumption exceeds a preset value, an internal piston instantly cuts off the airflow and the air line. alone. To make the orientation of the airline easier, modern elbows are swivel type. To determine the right inside diameter, make sure you know how much air is needed (SCFM) to optimally power your pneumatic tool or equipment. > Learn more about HOSEGUARD safety valve. The safest approach is to select a compressed air hose based on the fact that the flexible air hose will receive its air supply at the pressure of the compressed air system. Use these thread images when ordering fittings with threads If the elbow fitting is to be swiveling continuously, by a reciprocating part or some such on a machine, install a purpose-designed rotary union, NOT a swivel elbow fitting. 0000089042 00000 n To find the correct fitting size, measure the outer diameter of the threads. 0000069703 00000 n Air tanks require a safety valve set at 150 PSI. Most of our flexible hoses are available with a reel. 0000004981 00000 n For this reason, companies have now begun to color-coordinate their couplers and plugs, with the most common being: Visit our Air Hose Fittings Types Guide To Air Compressor Coupler Types for more information on these. If you have any questions regarding compressed air fittings, please leave a comment below, with a photo if applicable, so that someone can help you! 0000009529 00000 n Air Compressor Gauges Explained Why 2 Gauges? For example, rotary unions are commonly used on index tables, where there is the continuous rotary movement of the air supply line to the table. For the best experience on our site, be sure to turn on Javascript in your browser. The sizes shown above are the most common for industrial compressed air valves and cylinders. 4 67

Choosing the right one involves first assessing the application and the working environment where the hose will be used. A threaded boss is a threaded hole in the device or air tool into which you insert or thread a fitting. 0000089637 00000 n % 0000256093 00000 n Since the R-type threaded fitting has a taper, it too seals by penetrating into the threads of the boss until sufficient threads are in contact with each other (the fitting is tight) to prevent the escape of compressed air. As a result, metric thread sizes are incompatible with their NPT same-sized counterparts. All rights reserved. stream If a specific air fitting is manufactured to the NPT standard, it will have dimensional compatibility with other NPT threaded fittings of all other manufacturers. At this time, there does not appear to be a true universal thread that will fit metric and NPT ports and provide an acceptable level of thread sealing to prevent compressed air leakage. 0000083960 00000 n 0000255489 00000 n 0000068911 00000 n 0000256386 00000 n z3;a&Zuwv]wn:H3OMBgW:/;5YB+kzXs_]Hc(Sa'^ws[mM=1-6uuqm+qeJMHIhnouBT+xW:"ksed[ 4y6U\xu"KI} 6eXkvv/e[GzZOIf7f$}GVTT=j_B4 _|VP[nWEIS{ h {Ujeo9NUEG[2s~z@~"N_>`m!nvcucQ$/KmW~'W2Q7wMv;@>4i'vhpWsT4OeB'v0.&g z}$}mJF!dxf(obM-SoE1vn7wo`5cOe~/P Dtt This is a nice feature of modern air fittings and is both readily available and well accepted. The use of a standard moveable elbow fitting as a rotary union will result in fitting failure fairly quickly. Ingersoll Rand 185 IR diesel compressor pumping oil with the air. Its pretty much down to personal preference on the style you choose, though automotive and industrial designs are far more common and easy to find in most hardware stores.

A flexible hoses resistance to pressure is a matter of safety. about-air-compressors.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. use a tape measure or scale to measure the inside diameter (ID) of the threaded For a female thread, measure the top diameter of the opening (OD). The actual size of each is much larger than the fraction size they are supposed to be. 0000075582 00000 n carried by or in contact with the flexible hose must be compatible with the hose material. Metric fittings have differences in the tip-to-tip distance of the thread. I.D. startxref Air Compressor Wont Reach Cut-Out Pressure Troubleshooting, https://www.shopcross.com/product/parker-1-x-14-ptr-s-pipe-bushing-1-inch-male-x-14-female-nptf-steel, Air Compressor Overheating: 9 Most Common Reasons & How to Prevent It, UST Power System Plus Air Compressor Wont Reach Cut-Out Pressure, Emglo Air Compressor Wont Reach Cut-Out Pressure, Makita Air Compressor Wont Reach Cut-Out Pressure, Sanborn Air Compressors Information, Manuals, Service Locations, Top Air Compressor Manufacturers & Air Compressor Brands List, Plumbing an Air Compressor Setup Running Air Compressor Lines In A Garage, How To Calculate CFM of Air Compressors PSI to CFM Conversion, Identifying An Older Air Compressor Serial Numbers, Photos & Antique Air Compressor Identification, Air Compressor Troubleshooting, Solutions, Common Problems & Causes, How To Choose An Air Compressor Buying Air Compressors 2021, Compressed Air Treatment Guide Compressed Air Preperation And Treatment, What is Compressed Air? To help you get a grip on the actual sizes of NPT fittings, see the chart below. Double-check the manufacturers data before choosing a specific flexible hose. SAFEGUARDS TO PREVENT PERSONAL INJURY OR DAMAGE TO EQUIPMENT IN THE EVENT OF SUCH FAILURES. The HOSEGUARD safety valve provides protection in case a compressed air hose breaks free or ruptures.

0000256297 00000 n Some good options are the following: Dixon Valve TTB75 PTFE Industrial sealant tape, Vanguard PTFE thread sealant, Supply Giant PTFE air compressor fitting sealant, or Skylety thread Teflon seal tape. % 0000256151 00000 n The reason may be that pipe thread size does not refer to the inside or WARNING: HYDRAULIC AND PNEUMATIC POWER SYSTEMS CAN FAIL THROUGH MISUSE, AGE OR MALFUNCTION. Elbow fittings are those that allow the supplying line to connect to the air fitting tangentially, out to one side, rather than straight in the end.No machine-readable author was provided. Each fitting has a different role, but they are all important for managing your units health and effective operation.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[468,60],'about_air_compressors_com-box-3','ezslot_2',117,'0','0'])};if(typeof __ez_fad_position!='undefined'){__ez_fad_position('div-gpt-ad-about_air_compressors_com-box-3-0')}; Couplers facilitate the connection of an air tank or air compressor to the airlines. It is too easy for pieces of the tape to overlap the end of the fitting if not carefully applied. The greater the distance between the pneumatic tool and the air compressor, the greater the loss of air pressure. However, regulator settings can easily be changed. You might find this Metric Fitting Hole Size chart useful, too. An air tool can never create or receive an air pressure greater than that of the compressed air system. 0 They coat the male thread with the tape, allowing those male threads to turn deeper into the female boss than would be possible without the thread, and improving thread-to-thread penetration distance and the resulting tighter sealing. G-style fittings come in a variety of thread sizes, the commonest of which are: Larger sizes in the G-style metric fitting are certainly available, yet the sizes shown seem to be the highest volume in industrial compressed air applications. affects the overall weight of the flexible hose and that each additional foot will add to it. <]/Prev 260364>> and had difficulty determining the thread size you need? endstream endobj 12 0 obj <>stream To guide you through the selection process, weve listed the most important aspects to consider when choosing a compressed air hose. The best thread seal tape for compressed air fittings is PTFE (polytetrafluoroethylene) sealant tape. /Subtype/Image The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media. endstream endobj 13 0 obj <>stream 0000255448 00000 n

/ColorSpace/DeviceCMYK 0000010312 00000 n Using the liquid on smaller fittings is problematic if care is not taken to keep the sealant from overlapping and blocking the actual air passage. 0000048625 00000 n 0000084451 00000 n You will look at the diameter of the thread, and say to yourself, this aint no 1/4 fitting but it will be. Amazon and the Amazon logo are trademarks of Amazon.com, Inc or its affiliates. Nominal pipe size refers to the inner diameter of a pipe. Flexible air hoses are measured by their inside diameter (or I.D.). A regulator can reduce hose pressure to an air pressure thats lower than the systems air pressure. Have you ever tried to order a fitting that has pipe thread Though the threads on metric fittings look the same as those on NPT fittings, and a 1/4 NPT fitting will have a similar diameter to a 1/4 Metric fitting, they are not interchangeable. 0000070205 00000 n

will help you to determine which size pipe fitting you need. For a female thread, measure the top diameter of the opening (OD). You will commonly see the following in NPT thread sizes; There are certainly much larger NPT sizes. Do not make the assumption as I used to that a 1/4 NPT fitting thread is anywhere near 1/4 inch in diameter! For example a 1/2 pipe, the inner diameter of the pipe would be 1/2.

When buying an air compressor plug, quality and fit are the most important factors to consider, so its advised to opt for a brand with known quality to prevent compressed air leaks. This is a practical solution that prevents flexible air hoses from being dragged on the ground, keeping accidents at bay and reducing premature wear. In other words, you will screw this fitting thread right down until the sealing ring or O-ring squishes between the body of the fitting wrench flats and the boss into which you are threading it, sealing in the compressed air. 0000047456 00000 n 0000079734 00000 n (Dimensions shown are approximate values and you may need to round up to the For example, the pressure of an industrial compressed air system is usually between 90 and 150 PSI. 0000010381 00000 n Unless someone clues you into the color guide though, how will you know which are which? The threads of different fittings with the same NPT size will connect, but that does not mean that all of the fittings will necessarily look the same.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'about_air_compressors_com-banner-1','ezslot_8',121,'0','0'])};if(typeof __ez_fad_position!='undefined'){__ez_fad_position('div-gpt-ad-about_air_compressors_com-banner-1-0')}; What do you need to know when you are trying to determine what fitting to use and where to use it? This means you should choose a flexible hose based on the highest pressure it could receive, i.e., the maximum air pressure of the piping system itself. %%EOF By that I mean is it a 1 female threaded pipe to 1/4 male or female threaded what? Trying to use an R-type tapered metric thread in an NPT port can create problems such as badly leaking joints to stripped bosses. 0000069177 00000 n 0000000016 00000 n For example, pieces of tape can lodge in smaller air orifices and block them, or prevent another sealing surface from closing properly, actually generating a leak.

On this chart, I have listed the NPT thread size first, then what that thread size is in actual (decimal) inches, and then the closest common size fraction to that NPT size.Guide to NPT fitting size.