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

Manufactured by:
DeWALT
ERP Number:
ERP12417689
Part Number:
180450-S
Original Equipment Manufacturer ?
In Stock
Delivers in 3-5 Business Days!

Easy 

15 - 30 mins 

(92 rated repairs) ?

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Product Description

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This is an original part from Craftsman for nailers and staplers. This part produces air pressure to force the driver in the direction of the fastener. You will need a allen wrench set, adjustable wrench and a screwdriver to replace this part. This part is made of plastic and sold individually.

Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • Bostitch
  • Craftsman
  • DeWALT
  • Porter Cable
  • Stanley
This part works with the following products:
  • Nailer
Part# 180450-S replaces these:
  • 180450-S
  • P180450-S

Videos For installing this part.

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Replacing your HEAD VALVE BODY
Replacing your HEAD VALVE BODY

Customer Part Reviews

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4.9
Average Rating (out of 5):
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(147 Reviews)
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Questions & Answers

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The nailer just blows air will not shoot.
Frank For model number Sb1850bn - November 24, 2022

Hello Frank, Thank you for the question. We suggest checking the Head Valve and O-Rings for Wear or damage. Thank you for your inquiry, good luck with this repair!

eReplacementParts Team
November 24, 2022

2 people found this helpful.

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The nails will not advance after the first one
Gus For model number BT1855 - May 28, 2023

Hello Gus, Thank you for your inquiry. We would recommend checking the driver head valve and the return spring. We hope this helps.

eReplacementParts Team
May 28, 2023

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wont stroke (drive nail)
Rex For model number sb1850bn - January 5, 2024

Hi Rex, Thank you for writing. We suggest checking the Head Valve Part#: 180450-S for wear or damage. This part produces air pressure to force the driver in the direction of the fastener. We hope this helps!

eReplacementParts Team
January 5, 2024

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will this part fit my air nailer bostitch 18 ga?
Ronald For model number SB21N1 - January 17, 2023

Hello Ronald, Thank you for your inquiry. We have researched the model you have provided and do not show this part as compatible. The compatible part number is 180450-S. Good luck with your repair.

eReplacementParts Team
January 17, 2023

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when I squeeze the trigger the nailer , doesn't shoot until pressure les go, its like it freezes up, what is the fix?
Stephen For model number 351.184090 - September 30, 2022

Hello Stephen, thank you for writing. When the trigger of the nailer is depressed, the valve opens, forcing air into the cylinder and making the pressure above the piston greater than below it. The Head Valve is part 180450-S. We hope this helps.

eReplacementParts Team
September 30, 2022

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the piston does not return to the top after pulling the trigger
Charles For model number sb-1850bn - February 14, 2023

Hello Charles, thank you for your question. Make sure the supply air pressure is within the pressure range specified by the manufacturer. The Head Valve 180450-S produces air pressure to force the driver in the direction of the fastener. You will need a Allen wrench set, adjustable wrench and a screwdriver to replace this part. We are pleased to have been able to help.

eReplacementParts Team
February 14, 2023

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What is the part number for the head valve
Charles For model number SB-100SX - March 4, 2022

Hi Charles, Thank you for your question. The part number listed under your model number for the head valve is 180450-S. If you would like to place an order for it, customer service is open 7 days a week and anyone will be happy to assist you. Please feel free to give us a call. We look forward to hearing from you!

eReplacementParts Team
March 4, 2022

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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.

Easy 

15 - 30 mins 

(92 rated repairs) ?
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Nailer wouldn\'t drive a nail, when trigger was pressed just heard leaking air at trigger

Fred from Bartlett, Illinois

24 of 24 people found this instruction helpful.
Difficulty Level:
Very Difficult
Total Repair Time:
1- 2 hours
Tools:
Wrench (Adjustable)
Parts Used:
180450-S
Before I attempted to look for parts I completely disassembled the air tool (Craftsman Brad Nail Gun) to look for a failed part or seal. It helps to have the available parts sheet that illustrates the assembly, I would highly recommend that you have that before disassembly/assembly. Also make sure you clean the inside of the tool after it s disassembled. Compressed air has moisture and over the years with use grime builds up inside the tool so make sure to take the time to clean it. The only questionable part I saw that could cause the air leak was the head valve. Its made of plastic and one edge was brittle and I saw a lot of cracks. My intention was to only replace all the seals, but once I went on-line to look for the seal kits I discovered they weren\'t available anymore. The repair tips on the website gave me the confidence that what I was ordering was going to fix my problem. I reassembled the nail gun with the new head valve and I was pleasantly surprised when the gun operated like it should. eReplacementParts saved me from tossing my tool in the scrap bin.
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Nailer would not cycle after one brad

Lloyd from Dickinson, Texas

8 of 8 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Disassemble the main cylinder and inspect for wear or broken parts. I found the o-ring groove on the head valve piston broken and very brittle. Original was made of a black material. The replacement is made of a white nylon looking material. Assembled all parts with new o-rings and lubrication. One of the easiest machines I\'ve ever worked on. It is now working like new and if it ever has a similar problem, I\'ll know where to go for parts. The original o-rings in mine didn\'t show any damage or much wear, but I felt it was better to replace them since the machine is several years old.
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Cracked head valve

Steve from Belle Plaine, Iowa

7 of 7 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
180450-S
Fairly simple repair, removed top of nailer head and replaced broken head valve. Nailer works like new again. Thanks for the fast shipping!
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Deteriorated parts.

Andrew from Currituck, North Carolina

6 of 6 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Followed the parts break down. Very simple
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Nailer had air blowing thru adjustment knob and would not work .

Steven from Okemah, Oklahoma

6 of 6 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
180450-S
I removed the top cap . Carefully removed the valve and transferred the o ring . Then installed the head valve and replaced the cap . Job complete .
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Nailer would not fire.

Chad from LEAGUE CITY, Texas

4 of 4 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Parts Used:
180450-S
1. Removed 4 screws from the deflector.
2. Removed the broken head valve piston which was in several pieces.
3. Used the schematic to put the parts back together in the right order.
4. Reattached the deflector.
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Would not drive nails

Bruce from Tobyhanna , Pennsylvania

4 of 4 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
1- 2 hours
Tools:
Pliers
Parts Used:
180450-S
Opened compression chamber.
Removed remaining pieces of shattered components
Consulted ereplacementparts.com for exploded diagram
Correctly installed new part
Reassembled the nailer
Performed operational check

Total time spent troubleshooting, identifying broken part, ordering part and repair c ompletion; approximately 1.5 hours
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Would try to drive nail but would not retract to pick up next nail. Found plastic HD valve piston shattered.

Danny from Slidell, Louisiana

4 of 4 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Parts Used:
S06P001500, 180448, 180450-S
Removed top cap, pulled out valve piston. Then cleaned out the gun of all the broken pieces of the broken valve piston.Then I installed the new valve and the new o-rings. Works like new.
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Went to use my ten year old nail gun after first nail nothing happen, pull trigger just a little hiss.

Norman from Kingsport, Tennessee

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Wrench set
Parts Used:
180450-S
Took top off nail gun saw broken pieces . went to Ereplacementparts found my model saw what part broke, plastic valve, ordered it, replaced it and now back in business, nail gun working
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Head valve was damaged

Tim from BOonville, Indiana

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Remove the screws from the top cap and removed the cap
Remove the spring, o-ring and head valve
Installed the spring, o-ring and head valve
Screwed the top cap back on
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Model Cross Reference

This part works with the following models:
ERP Number: ERP12417689
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