need help with some fittings...

[midnight08]

need help on what to do... I have a compressor pump that has 1"-16UN male output fitting on it with a 1"-16UN compression nut on it.

I am needing to adapt down from this 1"-16UN male to 1/2" compression which is what the compressor tank (check valve) accepts.

Any other solutions are welcome as well.

I can not seem to find what I need locally (lowes, home depot, fastenal, Have not tried any plumbing shops or hydraulic shops yet) . So I am assuming I need to order it online.

 

[92GreenYJ]

I'm thinking you should check your plumbing and hydro shops. Maybe even a speed or performance shop. I've learned over the years that lowes and HD leave much to be desired in their brass fittings department

 

[kingofrestriction]

Do you have a Grainger near you?

 

[midnight08]

It looks like there is a Grainger in Ocala which is about an hour away. Are you saying that Grainger carries UN to NPT or Compression fittings?

 

[kingofrestriction]

Grainger might, honestly I haven't looked. If you check their online catalog. or maybe call the store they might be able to tell you. Grainger tends to have a lot of industrial supply stuff. Not everything is in stock in their local warehouses though and that is definitely hit or miss.

Just mentioned them as an option to try since it seems like it won't be stocked at a normal hardware store.

 

[Steevo]

Why not get a 3/4" pipe F/F coupling, and put a 1"-16UN fitting in one side and a 1/2' compression fitting in the other side, and put it halfway between the pump and the check valve?

Or, just go to a hydraulic hose place and have a steel, braided hose made up, with the right fitting on each end, and the right length to go from pump output port to check valve input port?

Also check the pump output volume to be sure that your check valve can flow that rate of CFM. A 1/2" check valve may be restrictive if the pump output is 1".
That must be a huge pump.

These guys will have everything you need:

http://www.mph.us/

 

[kingofrestriction]

need help on what to do... I have a compressor pump that has 1"-16UN male output fitting on it with a 1"-16UN compression nut on it.

I am needing to adapt down from this 1"-16UN male to 1/2" compression which is what the compressor tank (check valve) accepts.

Please forgive me, as I am still learning about these things myself, but I am a little confused by the thread pitches you are giving. I am familiar with 1" fittings with a pitch of 8, 12, or 20. But not 16. Is this a special application thread?

I agree that having a custom hose made or using an NPT coupling might be your best option.

 

[midnight08]

steevo and king...

That is precisely the problem I am having is finding this mysterious 1"-16UN that the manual is calling for... If I could find that fitting with different adapters, I would be golden. I could make up a series of connections like Steevo is recommending and get myself down to the needed 1/2in compression.

Steevo, I stopped into one hydraulic place and they said they couldnt do it. I will try out some other hydraulic places on monday.

I did stop into EVERY plumbing store in gainesville today and no one had or knows where I can get what I need... might do some internet searching to see if I can come up with something there...

 

[Steevo]

What is this mysterious fitting on the head of your compressor, and how could you replace it with a more standard fitting?
Is it threaded into the head? If so, couldn't you replace it with any standard 37º or 45º fitting?

What brand of pump is this, anyway?

 

[Torque1st]

Don't use a hose. A metal line is required to resist the high temperatures involved..

Most hydraulic distributors have measuring equipment and charts to identify fittings and threads. If they don't have the fittings in stock they can order them from a number of suppliers.

 

[kingofrestriction]

Don't use a hose. A metal line is required to resist the high temperatures involved..

Most hydraulic distributors have measuring equipment and charts to identify fittings and threads. If they don't have the fittings in stock they can order them from a number of suppliers.

What kind of temperatures are you expecting on a compressor that you can't use hose?

 

[Torque1st]

What kind of temperatures are you expecting on a compressor that you can't use hose?

Right off the compressor and before the check valve and receiver the temperature can reach several hundred degrees. Compressors get HOT! Rubber hose starts deteriorating about 175-200 degrees.
All the compressor manufacturers use metal tube in this application. The receiver cools the air with it's large surface area if properly designed.

 

[kingofrestriction]

Right off the compressor and before the check valve and receiver the temperature can reach several hundred degrees. Compressors get HOT! Rubber hose starts deteriorating about 175-200 degrees.
All the compressor manufacturers use metal tube in this application. The receiver cools the air with it's large surface area if properly designed.

Gotcha.

But what about using that steel braided hose? We use them on our compressors and they come straight from Quincy/CompAir/LeRoi. I see temperatures up and around 400 deg F regularly on our hose fittings here and they are still going strong. Our ambient is about 130 daily. Even our hydraulic hoses can get scalding hot.

*edit: I have ZERO experience with home setups or non-industrial type compressors, so I am not trying to be argumentative, trying to learn as much as I can*

I would just be surprised to see the kind of use in a home setup that would prevent someone from using hoses completely. Industrial/commercial I can understand though, and I certainly agree that in general piping is more durable.

 

[Torque1st]

Steel braided hose comes in many configurations and capabilities. The commonly available steel braid hose sold will still have a rubber liner that will deteriorate. Look in the Parker and Aeroquip catalogs and design manuals.

Metal tubing is used for the connection from the compressor to the receiver where the air is cooled. After the receiver, a rubber hose or steel braided hose is used as a vibration isolator.

Some people use rubber hose for the air distribution system in their shop. It is not recommended though.

Hydraulic systems are another animal altogether. The system temperature limits depend on the fluid and components used, usually dictated by the application. Your local hydraulic products distributor can sometimes arrange classes for industrial hydraulic maintenance personnel. Some universities have fluid power engineering courses.

 

[kingofrestriction]

Steel braided hose comes in many configurations and capabilities. The commonly available steel braid hose sold will still have a rubber liner that will deteriorate. Look in the Parker and Aeroquip catalogs and design manuals.

Metal tubing is used for the connection from the compressor to the receiver where the air is cooled. After the receiver, a rubber hose or steel braided hose is used as a vibration isolator.

Some people use rubber hose for the air distribution system in their shop. It is not recommended though.

Hydraulic systems are another animal altogether. The system temperature limits depend on the fluid and components used, usually dictated by the application. Your local hydraulic products distributor can sometimes arrange classes for industrial hydraulic maintenance personnel. Some universities have fluid power engineering courses.

Thanks!

 

[akdiesel]

16's are a size indication. In other words an 8 would be 1/2" and so on. Swagelock, Parker, and Aeroquip have the compression fittings in these size categories. I have not heard of a UN classification except for AN indicator.

 

[midnight08]

in typical fashion... this mystery fitting is on a Harbor Freight compressor head.

here is the manual for it. the fitting is listed as "outlet" in the manual. I measured the fitting size and thread pitch and it is correct at 1"-16

 

[midnight08]

I guess if I could find some fitting that could go from 3/4 compression to 1/2 compression then I can make that work as well.

 

[Torque1st]

Take the fitting to a fluid power distributor.

 

[midnight08]

fluid power distributor? AKA hydraulic shop?

 

[Torque1st]

fluid power distributor? AKA hydraulic shop?

Sometimes. Some hydraulic shops just make hoses or do repairs etc. A fluid power distributor will usually have a repair and fab shop as well as sell hose assys, hose, fittings, valves, pumps, motors, filters, cylinders, power units, etc. Try Motion Industries, Berendsen Fluid Power, etc.

 

[Torque1st]

Torque1st......you forgot to tell "kingofrestrictions" it is not your place to educate him and to look up this info on Google!

I don't mind educating people but nobody -must- do it.

 

[midnight08]

looks like I am just SOL... everyone that I have talked to , (including the companies torque1st recommended) are telling me that these fittings are practically none existent and if I do find them they will be ungodly expensive...

time to look for a new pump to get rid of this headache

 

[Torque1st]

Have a friend with a lathe make what you need.

 

[midnight08]

I have a lathe... I just don't know which way I want to go with solving the problem

 

[Torque1st]

That is half the fun!

Making adapters and fittings are what that lathe is for.

Start with a standard bushing with ID threads you can use for a tube fitting and turn the OD threads you need. -Good luck.

 

[kingofrestriction]

*edit: Deleted. Misunderstanding.

 

[kent_323is]

Take a look at this site.
They have lots of fittings.
Www.discounthydraulichose.com
Your 1" 16 fitting is a NPTF, national pipe thread fine.
They do make an adapter fitting to go from your 1"16 to many sizes.
http://www.discounthydraulichose.com/product_p/5406.htm
I've ordered from them and had great success.
Good luck!

 

[midnight08]

I ended up finding a company that may have a new check valve that will solve all my problems... hopefully that pans out. I needed a new check valve any way so this will be an easy solution if it works out.

 

[JMarsett]

This fitting is a 3/4 inch outside diameter copper compression fitting. You will need a 3/4" OD copper pipe and compression ferrrule. Your best bet is a refrigeration supply house. 3/4" OD is not used in plumbing, it's a refrigeration size. Remove the nut from the compressor, slide it over the pipe, slide the ferrule over the pipe. Slip the pipe into the fitting as far as possible, screw the nut onto the fitting and tighten.

 

[rburke65]

Ok.....someone educate me please. What is a UN fitting? Thx

 

[kbs2244]

Drill out the hole and re-tap it.

 

[RPH]

Find the local Parker store. They should have what you need.

 

[RonRock]

Zombie Thread. But an interesting issue the OP was trying to resolve.

I ran into a vaguely similar issue this summer trying to find a Tee fitting for my vacuum pump. Seemed to me like it should have been easily available. Searched everywhere, no luck. Seems that some fittings just aren't made.

In his situation I wonder if he could have found the correct fittings for both sides and silver soldered or brazed them together?