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AB-9051116 Pressure Reducer A

Part Number: AB-9051116
Bostitch
Availability: 25+ in stock
Price: $9.59
Quantity:
Ships within 1 business day

*This part replaces obsolete part #: and AB-9051118.

Description:
This is a genuine Bostitch replacement part, it is sold individually.
The purpose of the AB-9051116 Pressure Reducer is to control the amount of air pressure coming out of the compressor tank.
This is helpful when inflating items to specified pressure.
Also some pneumatic tools use different air pressure specifications to make them operate properly.
Compatibility
Repair Stories
4 of 4 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Press.Sw.4W 3/8In Valve Ul - AB-9063096
Pressure Reducer A - AB-9051116
Repair Difficulty:
Medium
Time Spent Repairing:
More than 2 hours
Tools Used:
Screwdriver, Pliers, Wrench Set, teflon tape, new fittings between switch and reducer, vise.
There was not what you would call a problem. the fittings are glued so as not to leak this made them very hard to remove.
Two things to be aware of for this repair:
1. Replace the fitting between the switch and reducer, if I would have known this I would have ordered it with the other two parts. This fitting as are the others are very difficult to remove, the glue and the amount of torque used to install them really contributes to it. I removed the switch from the compressor and mounted it in a vise by the metal part of it to remove.
2. Where the pressure tube goes into the switch there is a release which allows you to remove the fitting the tube goes into, this makes it easier to remove the tube.
But it's done and works great, I'm glad eReplacement parts was available, they had the exact replacement parts and priced very reasonably. I'm gonna have to keep them in mind.
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1 of 1 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Reducer A - AB-9051116
Repair Difficulty:
Medium
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Power Drill, Socket set, Wrench Set
Pressure relief valve was leaking
Remove compressor handle/shroud , move wires, unscrew valve and fitting. Tape threads and reassemble in reverse order.
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1 of 1 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Reducer A - AB-9051116
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Wrench Set, Teflon tape
Pressure regulator adjustment on compressor was stripped rendering it useless.
Pretty basic. Had to remove motor cover, unscrew pressure gauge and regulator . Installation was reversed.
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0 of 0 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Gauge 40 - AB-9414745
Pressure Reducer A - AB-9051116
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Wrench Set, two wrenches and teflon tape
I lent my air compressor to a friend and he brought it back with a different pressure gauge on it
Unscrewed the bad quick disconnect and pressure gauges and replaced with the correct parts that were ordered.The repair was easy using the correct parts and following the use instruction sheet. I would recommend Replacement parts because they were easy to order from and they sent the right parts the first time with no problems. If I can do it anyone can. T. Foster
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0 of 0 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Gauge 40 - AB-9414745
Pressure Reducer A - AB-9051116
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Wrench Set
10 year + old Compressor was leaking air at main stem, tried to tighten fittings entire pressure reducer broke off compressor
Removed entire pressure reducer from compressor, reinstalled with one new gauge, one existing gauge, and hose connector. This was done in 15 minutes

Used two wrenches, plumbers tape, very easy to do, extremely pleased that the parts were still available!!!
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0 of 0 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Reducer A - AB-9051116
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Adjustable Wrench
The old pressure reducer broke off
Used a stripped screw remover to take out the remaining part of the pressure reducer from the pressure gauge and then screwed in the new pressure reducer.
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0 of 0 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Belt - AB-9075047
Pressure Reducer A - AB-9051116
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Wrench Set, Allen head sockets
Plastic Pressure regulator thread area broken, purchased a spare belt.
Simple straight forward replacement, parts were direct replacement. Thanks
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0 of 0 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Reducer A - AB-9051116
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Adjustable Wrench
Threads on the pressure reducer had stripped and I could no longer maintain proper pressure
Unscrewed old pressure reducer and replaced with new pressure reducer. Tightened new part and ensured there were no leaks.
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0 of 0 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Gauge 50 - AB-9052091
Press.Sw.4W 3/8In Valve Ul - AB-9063096
Pressure Reducer A - AB-9051116
Repair Difficulty:
Hard
Time Spent Repairing:
1-2 hours
Tools Used:
Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver, Adjustable Wrench, thin open end wrench..2 dfferent sizes needed.
Not working...
Tag / label everything you remove ... be careful , be patient removing and replacing what you need to replace or remove or transfer to your new part.... Mark, tag, color coat wiring and switch for easy reassembling... A vice/ liquid wrench and loctite is useful to have on hand. Take your time it took me two (2) hours straight from start to finish... 2 Thin open end wrenches needed to remove gauge and nipple.... hope this helps.
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0 of 0 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Reducer A - AB-9051116
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Pliers, Wrench Set
The air regulator broke off my compressor.
Simply disconnect piping and use pipe tape on the threads. Reinstall on new regulator in the same position as you removed the broken regulator. Easy repair that will save you from buying a new compressor.
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0 of 0 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Reducer A - AB-9051116
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Pliers, Wrench Set
Pressure reducer valve blew apart had been leaking recently
Removed valve, used heat gun on green loctite on threads from factory.
Teflon taped and wrenched all the plumbing back together including gauge
Took about 15 to 30 minutes. Part took 4 days by us mail. Real simple repair
and compressor works great zero leaks awesome
Bostitch 6 gallon pancake compressor
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0 of 0 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Gauge 50 1/4In - AB-9414744
Press.Sw.4W 3/8In Valve Ul - AB-9063096
Pressure Reducer A - AB-9051116
Repair Difficulty:
Easy
Time Spent Repairing:
1-2 hours
Tools Used:
Screwdriver, Socket set, Wrench Set, Nutdriver, Adjustable Wrench
Would not turn on
To replace the pressure switch, I removed the parts that do not come with the new pressure switch. I removed the cover and noted how the wires were connected. Then remove the old pressure switch and installed the new one. I wired it the same as the old one , then installed the new pressure guage on it. I then connected the new pressure reducer to the switch, and used the parts from the old one and put them on the new one.
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0 of 0 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Reducer A - AB-9051116
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Screwdriver, Socket set, Wrench Set, Adjustable Wrench, Plumbers tape
Replacement of pressure reducer
Remove handle and compressor cover-enables you to move power cords so reducer will spin on and off without removing switch mechanism.
Turn out reducer gauge using appropriate wrench.
Using appropriate wrenches - spin off old reducer ( reducer might break apart because of seal glue from factory.)
Dry thread all old nipples including gauge into new reducer to remove any old glue.
Remove nipples and apply plumbers tape to all threads-tighten with appropriate wrenches(attach gauge last after reducer aligned.)
Reattach cover and handle.
Turn on and check for leaks.
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0 of 0 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Reducer A - AB-9051116
Repair Difficulty:
Medium
Time Spent Repairing:
15-30 minutes
Tools Used:
Wrench Set, Adjustable Wrench
Couldn't reducer the air pressure
Take all of the items that are not on the new pressure reducer, then remove the old one. Install the new one, and then put the items that were on the old one on the new one.
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0 of 0 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Pressure Reducer A - AB-9051116
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Wrench Set
Could not adjust air pressure out
It worked great all I had to do was unscrew one component and replace it with the one you sent me which worked perfectly. I now know where to go to get parts if needed. Thanks. I think a good thing you doing is following up on things, first time for me. Great job.
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Discussion
Discussion for Pressure Reducer A - ( AB-9051116 )
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  • Subject:
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  • Comment:
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anyone know how to replace pressure reducer on a 6 gallon Bostitch compressor. Model # cap60pb-of. thanx in advance.
WJA
Reply: Pressure Reducer Replacement

WJA

Hello 1497926,

We have a video on link removed How to Replace the Regulator on a Campbell Hausfeld Oil less Air Compressor It is not the Bostitch AB-9051116 Pressure Reducer. But I hope it will give you a good idea on how to replace it.

-WJA
To replace this part, do I unscrew the Red Cap or use a wrench to remove the aluminum housing holding the red cap? I can't seem to remove just the Red Cap. When I unscrew it, it just becomes loose. I've tried pulling and unscrewing, but that doesn't work. Please help?
WJA
Reply: Pressure Reducer A Part Number: ...

WJA

Hello kbatzer,

Bostitch does not provide a replacement part for the red cap. You have to replace it with the complete AB-9051116 Pressure Reducer.

-WJA
1205100
Question: Leaking Compressor

1205100

Directly behind the valve that controls the pressure going to the hose (has red cap), there is an aluminum nut. Air is leaking between the valve housing and that nut. How do I fix it?
Tinkerdave
Reply: Leaking Compressor

Tinkerdave

Hi,
Drain your air and remove the cap screw.You should see a brass stem that sits in the nut .Remove it clean it and put a little grease on it .Reinstall it and that should stop the air leak.If not then replace the regulator.Hope that helps.Good luck.
Tinker
baker
Question: Red Knob

baker

Is the red knob on the part still plastic or is it now metal? Thanks
Tinkerdave
Reply: Red Knob

Tinkerdave

Hi baker,
They are still plastic.The issues with these regulators from my understanding was with the threaded shaft and threaded housing that the regulator knob went into. The threads in the housing were rather poor causing them to strip out. I believe this problem has been fixed. Hope this helps.Good luck.
Tinker
foster
Question: Pressure Reducer A

foster

Is this a straight forward replacement part, do you just screw it on so to speak? My compressor is a CAP60PB-OF
Tinkerdave
Reply: Pressure Reducer A

Tinkerdave

Hi foster,
Yes it is .If all that is wrong is that the knob won't work you can take the front of the new regulator and screw it on the old regulator.They had a lot of problems with the red knob stripping out on those compressors.Hope that helps.good luck.
Tinker
johnborden
Reply: Pressure Reducer A

johnborden

I have this same compressor and the red knob is stripped. I have purchesed the reducer but can't get the old one off. How do i take it off?
Tinkerdave
Reply: Pressure Reducer A

Tinkerdave

Hi johnborden,
They use a green loctite on the joints and you will most likely have to carefully heat it up to soften the bond.Hope that helps.good luck.
Tinker
Product Information
Manufacturer: Bostitch
Category Number: AB-9051116
Classification: Part
Weight: 0.34 lbs.
Shipping: Ships Worldwide world wide shipping icon
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