Part Location Diagram of 180450-S DeWALT HEAD VALVE BODY
See part A-9 in the diagram
Replacing your Bostitch Nailer HEAD VALVE BODY
( Grid squares measure 1x1 inch )

HEAD VALVE BODY 180450-S

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10 Reviews

Rated by 10 customers 

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Really Easy 

15 - 30 mins 

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$6.25
In Stock
Fix Number:
FIX12417689
Manufacturer #:
180450-S
Manufactured by:
DeWALT

Product Description

This is a genuine head valve for nailers and staplers. The head valve is responsible for controlling the flow of air to the cylinder. When the trigger is pulled, it creates an imbalance of pressure, which opens the head valve and fires the piston. The head valve is prone to wear over time, so it is important to inspect it often. The seals on the head valve or the body itself can begin to harden and eventually crack, and this results in air leaking from the gun exhaust. For this repair you will need an Allen wrench adjustable wrench and a screwdriver. This plastic head valve is sold individually.

Videos For installing this part.

Replacing your HEAD VALVE BODY

Replacing your HEAD VALVE BODY

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Installation Instructions Provided by Fix customers like you.

Average Repair Rating: 4.7 / 5.0, 10 reviews.
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Customer:
Stephen from GRANITE CITY, IL
Parts Used:
180450-S
Difficulty Level:
Very Easy
Total Repair Time:
Less than 15 mins
Tools:
Nutdriver
Head valve on brad nailer was damaged.
Removed top of nailer assembly. Removed head valve and o ring. Used existing o ring and placed on replacement head valve and reassembled the nailer
7 of 7 people found this instruction helpful.
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Customer:
Henry from KINSTON, NC
Parts Used:
180450-S
Difficulty Level:
Very Easy
Total Repair Time:
Less than 15 mins
Head valve had a crack in it and caused the nailer to not work
Took the head cover off and replaced the o ring on the new part and replaced it. Works great again.
5 of 6 people found this instruction helpful.
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Customer:
allen from SAVANNAH, GA
Parts Used:
180450-S, 180446
Difficulty Level:
Really Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
would not allow air in to nailer
After installing the parts from Fix.com I applied some 3 in 1 oil into the area where the piston is and also where your air nozzle connects. the more oil the better, hook up the air hose and good to go. You tube has many videos for helping as well.
3 of 3 people found this instruction helpful.
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Customer:
Dan from CAVE CREEK, AZ
Parts Used:
180450-S
Difficulty Level:
Really Easy
Total Repair Time:
15 - 30 mins
Air tool seems to leak air when you pull the trigger, and no impact
Simply take off the top cap. The Head valve is inserted inside the head cap, and usually gets very brittle and cracks with age.
Pull out the old head valve.
Transfer the large O-ring, spring and flat washer from the old valve to the new one. Insert the flat washer, then spring into the new valve and insert back into the head. Be sure to use mineral oil for air guns. Regular air tool oil can damage the rubber O-rings
3 of 3 people found this instruction helpful.
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Customer:
Charles from SAMARIA, MI
Parts Used:
180450-S
Difficulty Level:
Really Easy
Total Repair Time:
Less than 15 mins
Just stopped working and was leaki g air out of the trigger.
Started internet search to figure out what was wrong. After a couple of u-tube videos ... learned it was the head valve had went bad so with that being said started searching for a replacement part only to find that it was discontinued beacuse of the age of the tool. Searching the internet came across fix.com and they could get the part but was on back order. It took about 2 1/2 weeks to get the part. Took the head off the tool removed the head valve, spring, spacer and saved the o-ring... reused the o-ring, spring and spacer on the head valve. Oiled everthing up and put it all back together ... tightened the head bolts down evenly, until snug and 1/8 of a turn after tight ... plug the air hose in ... tool works just like it did when it was new!! Thank you fix.com
1 person found this instruction helpful.
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Customer:
Kevin from HOUSTON, TX
Parts Used:
180450-S, 180446
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Combination Brad Nailer/Stapler would not operate
The plastic head valve inside the gun disintegrated. Common problem with old guns. Remove 4 screws (part1) with hex wrench and pull off back cap on gun. Try not to damage gasket (part3). Clean out all debris left by old head valve, If you can still use the o-ring from the head valve keep it. The original o-ring is not available buy I orde red a 33mmx2mm online and it works fine. Install per diagram using Vaseline or 3 in one oil on o-rings and cylinders. Make sure to put the flat face of the seal (part5) facing the back of the gun against the metal seal (part4), or it will leak air. Work the new head valve/seal inside the cylinder at the back of the cap to make sure that it compresses inside when it is tightened against the interior spring (part6). Re-Install 4 screws tightening opposite sides gradually so that head valve compresses into cylinder when tight. Should be good to go.
1 person found this instruction helpful.
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Customer:
Twyla from GRAYSLAKE, IL
Parts Used:
180450-S
Difficulty Level:
Really Easy
Total Repair Time:
30 - 60 mins
Head Valve was cracked and leaking air
Took top off nail gun and removed the Head Valve and replaced it with the new one. The gun worked fine after that.
1 person found this instruction helpful.
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Customer:
Art from CHULA VISTA, CA
Parts Used:
180450-S
Difficulty Level:
Very Easy
Total Repair Time:
Less than 15 mins
disasembled brad nailer,
using hex tool that came with nailer.pulled out piston,noticed it was damaged on the edge from use.allowing air to escape .rendering tool useless.ordered replacement part using tool identification numbers.removed rubber gromet to reuse on new piston.replaced new one.tightened
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Customer:
Gary from Niceville, FL
Parts Used:
180450-S
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
The head valve in both my air stapler and small finish gun had broken up into several pieces and would not direct air to rerun the ram so it was in a fully Estes position
Disassembled guns and found both had bad head valves. Went to craftsman and replacement.com Where both stated parts were obsolete and no longer available but after a couple of hours of research i finally found fix.com the only place I located the after market replacement valve

Used craftsman illustrated part breakdown to see how everything fit together. Throughly Cleaned all broken pieces out of cylinder and change o ring seals from old valve to the new one. Then reassembled both guns. A couple of pointers the nailer rams will only fit one way. The guide tracks must be aligned to the front of the gun to preclude binding. A light coat of petroleum jelly protects the o rings and lets you use less force to put the parts together.

Old head valve was made Of a carbon looking material. New one look to be Teflon so they should hold up longer.

After reassembly check operation the load up and get to work
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Customer:
Mike from DOYLESTOWN, PA
Parts Used:
180450-S
Difficulty Level:
Very Easy
Total Repair Time:
Less than 15 mins
Pneumatic stapler failed to fire.
Removed metal head cover. Removed broken head gasket but used the existing 2 gaskets and 1 spring from broken unit, and installed onto new head valve replacement.
Replaced metal head cover.
Fires perfect staples now!
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Customer Reviews
Average Rating: (10 Reviews)
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Model Compatibility

This part works with the following models:
Fix Number: FIX12417689
Manufacturer Part Number: 180450-S
Brand Model Number Description
Craftsman 351153000 Nailer - Nailer/stapler
Craftsman 351181700 Nailer - Stapler
Craftsman 351181710 Nailer - Stapler
Craftsman 351181720 Nailer - Nailer
Craftsman 351181730 Nailer - Nailer
Craftsman 351181740 Nailer - Nailer
Craftsman 351184090 Nailer - Brad Nailer
Craftsman 351184240 Nailer - Brad Nailer
Craftsman 351184540 Nailer - Combination Nailer/stapler
Porter Cable BN200C Nailer - Brad Nailer
Porter Cable BN200CR Nailer - Brad Nailer
Porter Cable BN200SB Nailer - 18-Gauge Brad Nailer
Bostitch BT1855 Nailer - Oil-Free Brad Nailer
Bostitch BT1855K Nailer - 18 Gauge Brad Nailer
Bostitch BTFP12233 Nailer - Smart Point 18 GA Brad Nailer Kit
Bostitch BTFP1850K Nailer - 18ga 2in Brad Nailer
Craftsman CMPBN18K Nailer - 18ga Brad Nailer
Craftsman CMPBN18SB Nailer - 18 Ga Brad Nailer
Craftsman CMPNC18K Nailer - 18ga Nrrw Crwn Stplr
DeWALT DWEHF1838K Nailer - 18ga 7/32 Crwn Flr S
DeWALT DWFP12231 Nailer - 18 Gauge 2" Brad Nailer
DeWALT DWFP12232 Nailer - 18 Gauge 1-1/2" x 1/4" Narrow Crown Stapler
DeWALT DWFP12233 Nailer - 53445
DeWALT DWFP12233R Nailer - Pin Nailer
DeWALT DWFP1838 Nailer - 18ga 1-1/2 Stapler
DeWALT DWFP1838R Nailer - Stapler
DeWALT DWLHF2025K - 20ga Engr Floor Stap
Bostitch EHF1838K Nailer - Flooring Stapler
Stanley FMFP71928 Nailer - 18ga 2# Brad Nailer
Bostitch LHF2025K Nailer - Flooring Stapler