air compressor question
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Junior User
Joined: Sep 2004
Posts: 59
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From: Bristol Tn.
air compressor question
I have a IR 80 gallon 7.5hp 24cfm 175psi air compressor.
I have 1/2" pipe coming from the tank going to a regulator with 1/4" fittings
and 100' of 3/8"hose with 1/4" fittings going outside where I do most of my work.
When I use my impact wrench it don't have the power it should have.
I use it were I work and it works fine.
I can also use shorter hose and still no power.
Thanks for your help
I have 1/2" pipe coming from the tank going to a regulator with 1/4" fittings
and 100' of 3/8"hose with 1/4" fittings going outside where I do most of my work.
When I use my impact wrench it don't have the power it should have.
I use it were I work and it works fine.
I can also use shorter hose and still no power.
Thanks for your help
Postmaster
Joined: Aug 2004
Posts: 4,004
Likes: 1
From: North of Boston MA
Are you sure your pressure gauge is right? Maybe you aren't giving it the pressure you think you are.
I can't imagine the 1/4" fittings are robbing you that badly in just 100'. Try turning up the regulator.
I can't imagine the 1/4" fittings are robbing you that badly in just 100'. Try turning up the regulator.
Thread Starter
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Junior User
Joined: Sep 2004
Posts: 59
Likes: 0
From: Bristol Tn.
Thanks for the reply my regulator only shows 100 psi max setting
and that is what i have it set on.
my compressor says it should put out 175 psi
I thought the size or diameter of hose might be the problem
and that is what i have it set on.
my compressor says it should put out 175 psi
I thought the size or diameter of hose might be the problem
Posting Guru
Joined: Sep 2004
Posts: 1,616
Likes: 3
From: Sapulpa OK
If you can, put a pressure gauge right at your tool. Read the pressure as you use the tool. I'll bet your pressure at the tool drops down to 75 PSIG. Ford6 has probably hit the nail on the head with his suggestion to remove the regulator. Another notorious restriction is cheap Chinese quick connectors. they do not have a large enough orfice to pass enough air to keep up with your tool. Also, hoses can develop an internal flap that will close the hose off during high flow conditions.
Good luck with it
Good luck with it
Senior User
Joined: Dec 2007
Posts: 236
Likes: 1
From: Taxsonville,Fl.
It's your 100 feet of hose and 1/4 inch fittings robbing your volume and anywhere else you have 1/4 fittings.
Having 3/8 hose is a good thing but not if you use 1/4 fittings, it's almost same as using 1/4 hose. And the 100 feet of lenght is reducing your volume also with restriction.
Go to your local fitting supplier and get some larger fittings and you will see and feel a big difference
Take a look at this site
http://www.gates.com/index.cfm?locat...tsFluidAirFlow
that should help ya
Jim
Having 3/8 hose is a good thing but not if you use 1/4 fittings, it's almost same as using 1/4 hose. And the 100 feet of lenght is reducing your volume also with restriction.
Go to your local fitting supplier and get some larger fittings and you will see and feel a big difference
Take a look at this site
http://www.gates.com/index.cfm?locat...tsFluidAirFlow
that should help ya
Jim
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Postmaster
Joined: Sep 2004
Posts: 3,166
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From: wi
i use a 7/8 inch hose for getin out of the shop(50ft)and big fitting (1/2in) no problems also turned up the psi to 160 got enuff power that if your no carefull it twist off lugstuds
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Fleet Mechanic
Joined: Jan 2005
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From: cape may county NJ
I run a 100' 3/8 hose with 3/8 fitting at the compressor end and miton 1/4 fittings at tool end without a regulator on my snap on IM650 impact and it works great even at a 100 psi,so I to think it is your regulator robbing you of air flow.
Myself I built a small regulator with 1/4" fittings and a gauge and put it on right on the tool if I need to regulate the air pressure and the only thing I think I use that needs it is my nail/staple guns.
Myself I built a small regulator with 1/4" fittings and a gauge and put it on right on the tool if I need to regulate the air pressure and the only thing I think I use that needs it is my nail/staple guns.
Thread Starter
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Junior User
Joined: Sep 2004
Posts: 59
Likes: 0
From: Bristol Tn.
Thanks for the replies Ford six was right it was the regulator.
I took it out and ran my impact it works grest now.
I guess I will have to buy a better regulator that will go up to 200 psi.
thanks for the help
I took it out and ran my impact it works grest now.
I guess I will have to buy a better regulator that will go up to 200 psi.
thanks for the help
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