Medium
30-60 minutes
Genuine OEM power tool replacement part designed for Hitachi Nailers. If your trigger is leaking when you depress it, then this part may need to be replaced. This item is made out of Rubber Material and it is Sold Individually.
Valve Packing 888151
OEM part for: Metabo HPT (Hitachi)
Part Number: 888151
$4.99
In Stock
Order within the next 4 hours and your part ships today! 
Jump To:
Frequently Purchased Together ?
Compatibility
This part will fit the following 61 machines
Metabo HPT (Hitachi)
NR83AA3 Clipped Head Framing Nailer View Diagrams & Manuals
NT65A3 16-Gauge Finish Nailer View Diagrams & Manuals
NV45AB2 Side Load Coil Roofing Nailer View Diagrams & Manuals
NV45AB2(S) Bottom Load Coil Roofing Nailer View Diagrams & Manuals
NV45AE 1-3/4" Side Load Coil Roofing Nailer View Diagrams & Manuals
NV65AC Coil Pallet Nailer View Diagrams & Manuals
NV83A2 Full Round Head Coil Nailer View Diagrams & Manuals
VH650 Full Head Coil Fencing Nailer View Diagrams & Manuals
NV50A1 Light-Duty Coil Utility Nailer View Diagrams & Manuals
NV50AA Light-Duty Coil Utility Nailer View Diagrams & Manuals
N5008AC/P 7/16" 1" - 2" x 16 Gauge Standard Crown Stapler View Diagrams & Manuals
N5010A 1/2" Standard Crown Stapler View Diagrams & Manuals
N5021A 15/16" Wide Crown Stapler View Diagrams & Manuals
N5024A 1" Wide Crown Stapler View Diagrams & Manuals
NV50AP2 Full Round Head, Coil, Wire Collation Pasti-Tacker Plus View Diagrams & Manuals
NR83A2(S) Framing Nailer, Full Head, Plastic Strip Collation (without Depth Adjustment) View Diagrams & Manuals
83AA2 Strip Nailer View Diagrams & Manuals
N3824A .5"-1.5" Wide Crown Stapler 16Ga View Diagrams & Manuals
N5008A1 Stapler View Diagrams & Manuals
N5008AA Stapler View Diagrams & Manuals
N5008AC 2" 16Ga 1"-2"Standard Crown Construction Stapler View Diagrams & Manuals
NH451 "T" Nailer View Diagrams & Manuals
NR83A 3-1/4" Full Head Nailer View Diagrams & Manuals
NR83AA 3-1/4" Clipped head Framing Nailer View Diagrams & Manuals
NR83AA2 3-1/4" Clipped head Framing Nailer View Diagrams & Manuals
NT50A 18Ga Brad Nailer View Diagrams & Manuals
NT65A 16 Gage Brad Nailer View Diagrams & Manuals
NT65A2 2-1/2" 16Ga Finish Nailer View Diagrams & Manuals
NV45AA Heavy Duty Coil Nailer View Diagrams & Manuals
NV45AB 1-3/4" Heavy Duty, Roofing Coil Nailer View Diagrams & Manuals
NV65A Nailer View Diagrams & Manuals
NV65AA Nailer View Diagrams & Manuals
NV65AB Nailer View Diagrams & Manuals
NV75A Nailer View Diagrams & Manuals
NV83A 3-1/4" Full Head, Framing Coil Nailer View Diagrams & Manuals
VH501 Nailer View Diagrams & Manuals
N5024A2 Stapler View Diagrams & Manuals
NV83A3 Nailer View Diagrams & Manuals
NV83A4 Nailer View Diagrams & Manuals
NV83A102 Nailer View Diagrams & Manuals
NR83A3S Strip Nailer View Diagrams & Manuals
NR83A3 Strip Nailer View Diagrams & Manuals
NR83AA4 3-1/4" Paper Collated Framing Nailer View Diagrams & Manuals
NR83A2 Strip Nailer View Diagrams & Manuals
NR83A5 Strip Nailer View Diagrams & Manuals
NR83A5(S)M 3-1/4 Inch Rnd Head Framing Nailer W/Out Depth Adjustment View Diagrams & Manuals
NR83A5M 3-1/4 Inch Rnd Head Framing Nailer W/ Depth Adjustment View Diagrams & Manuals
NR83AA5M 3-1/4 Inch Clipped Head Fram Nailer Accepts Paper Tape Collated Nails View Diagrams & Manuals
NT65A5M 2-1/2 Inch 16ga Finish Nailer Pro 2-1/2 Inch 16ga Straight Finish Nailer View Diagrams & Manuals
NV45AB2M 1 3/4 Inch Roofing Coil Nailer Side Load Magazine (Wire Collation) View Diagrams & Manuals
NV50A1M 2 Inch Utility Coil Nailer (Wire Collation) View Diagrams & Manuals
NV65AH2M 2 1/2 Inch Siding Coil Nailer (Wire/Plastic Sheet Collation) View Diagrams & Manuals
NV83A5M 3-1/4 Inch Coil Framing Nailer 2 Inch-3-1/4 Inch X 0.099 Inch-0.131 Inch View Diagrams & Manuals
N5008AC2M 2 Inch 16 Ga Standard 7/16-Inch Crown Construction Stapler View Diagrams & Manuals
N5010ABM 15.5 Gauge 1/2 Inch Crown Flooring Stapler View Diagrams & Manuals
N5010AM 2 Inch 16 Ga Medium 1/2 Inch Crown Stapler View Diagrams & Manuals
N5021AM 2 Inch 16 Ga Wide 15/16 Inch Crown Stapler View Diagrams & Manuals
N5024A2M 2-Inch 16 Ga Wide 1 Inch Crown Stapler View Diagrams & Manuals
NV45AES Nailer View Diagrams & Manuals
NV50AP Nailer View Diagrams & Manuals
NV65AH2 Nailer View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Nailer Parts
- Stapler Parts
This part replaces obsolete part #: 878734, 878-734, 875637
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Valve Packing
No questions have been asked yet
Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Air leak, seal failed
JERRY - April 29, 2016
👍 3 of 4 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, SPANER WRENCH
Parts Used
Knock out roll pin for trigger & unscrew valve to replace seal & ball
Did you find this story helpful?
Thanks for voting and helping fellow customers!
The nailer leaking air at the trigger.
Matthew - August 15, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Hex wrench
Parts Used
1. Remove the trigger from the air nailer.
2. Remove and clean the valves behind the trigger.
3. Replace the worn parts.
4. Grease and reassemble.
2. Remove and clean the valves behind the trigger.
3. Replace the worn parts.
4. Grease and reassemble.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
The valve packing disintegrated
David - April 5, 2023
Tool Type
Nailer
Difficulty
Easy
Time
1-2 hours
Tools Used
Screwdriver, None
Parts Used
Replaced every O-ring in the Gun ordered the valve packing. Replaced it and everything works great.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
framing nailer was leaking air when connected to air hose
Roger - December 28, 2021
Tool Type
Nailer
Difficulty
Medium
Time
1-2 hours
Tools Used
, allen wrench set, O ring pic, 8mm wrench, hammer, punch.
Dismantled entire gun piston bumper was breaking into small pieces causing air leak. I use my nail guns daily therefore when something like this happens I always do a complete rebuild, in this case the front bumper was also bad. I always allow a few hours thoroughly clean, inspect and rebuild everything properly to extend the time between rebuilds. recommendations: Take your time be patient, drink a beer if necessary and make it like brand new.
P.S. DO NOT REUSE OLD PARTS SUCH AS GASKETS, ROLLED PINS, ETC. CHEERS AND HAVE FUN!
P.S. DO NOT REUSE OLD PARTS SUCH AS GASKETS, ROLLED PINS, ETC. CHEERS AND HAVE FUN!
Did you find this story helpful?
Thanks for voting and helping fellow customers!
air leak at trigger
Bruce - July 15, 2020
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, punch and small hammer for roll pin
Punched out roll pin holding trigger. Not the right tool but used a hammer and screwdriver to remove the threaded piece holding the trigger apparatus. Replaced the valve packing and both o-rings and reassembled. Be careful no to lose the ball.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
The O ring on the plunger broke
Russell - May 23, 2020
Tool Type
Nailer
Difficulty
Hard
Time
30-60 minutes
Tools Used
Screwdriver, Wrench Set, Adjustable Wrench
Parts Used
I removed the trigger and the plunger came out and then I unscrewed the piece that the plunger rides in and out came the ball and the packing. All told could be a ten minute job. The O ring is a TIGHT fit on the plunger and it took about ten minutes to get it on the first stage and then I broke it trying to get it over the hump and into the seat groove. I had purchased two O rings so I had a second to install. After a good night sleep and much thought I soaked the O ring in boiling water and it went on the first stage ok. I soaked the plunger with the O ring in the first place and then it rolled into the groove pretty easy and the whole thing went back together in a few minutes.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Air was leaking from the trigger.
Calvin - March 16, 2019
Tool Type
Nailer
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers
I removed the trigger assembly and replaced broken parts
Replaced o rings.
Replaced o rings.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Packing was missing
LEON - March 10, 2018
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Light hammer , allen wrench
Parts Used
Removed head
Removed roll pins
Removed safety trigger
Removed valve body
Installed packing
Assembled in reverse order
Removed roll pins
Removed safety trigger
Removed valve body
Installed packing
Assembled in reverse order
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Air leaked from trigger
Michael - August 11, 2017
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
, Allen wrenches, small punch to remove trigger drift pin
1) Drove trigger pin out.
2) Remove trigger assy.
3) Replaced valve packing and urethane ball and plunger o-ring
2) Remove trigger assy.
3) Replaced valve packing and urethane ball and plunger o-ring
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Leaky trigger
louis - August 2, 2017
Tool Type
Nailer
Difficulty
Medium
Time
15-30 minutes
Tools Used
, 3/32 roll pin punch
Parts Used
Use punch too remove roll pin from trigger . Slotted screwdriver too remove cylinder. Clean old packing out of housing. Replace with new , and repeat all steps in reverse
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Load More Install Stories
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
