Medium
30-60 minutes
This is an authentic replacement part sourced directly from the manufacturer. The valve plate assembly is found in a Bostitch air compressor. This part includes two metal valve plates, which are used to control the flow of air in the cylinder. You may require a screwdriver or Allen wrench when replacing this item.
Valve Plate Assy AB-9434A29
OEM part for: Bostitch, Porter Cable
Part Number: AB-9434A29
$24.71
In Stock
Ships within 1 business day 
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Compatibility
This part will fit the following 4 machines
Bostitch
BTFP02006 Compressor View Diagrams & Manuals
CAP2041ST-OL (Type 1) Com 4.0g 135psi 120v View Diagrams & Manuals
BTFP02006 (Type 1) Air Compressor Power Tool View Diagrams & Manuals
Porter Cable
PCFP02040 (Type 1) Comp 4g 135psi 120v View Diagrams & Manuals
This item works with the following types of products:
- Compressor Parts
This part replaces obsolete part #: AB-9433001, AB-9411032
Customer Part Reviews ?
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Easy repair.
The plates came stacked and zip tied to hold everything in place and avoid confusion.
Sid -
September 1, 2021
Verified Purchase
Worked as expected
The part was in great condition and worked perfectly for our air compressor. Great customer service
Guest -
September 3, 2019
Verified Purchase
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Verified Purchase
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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.
Compressor would not build up air because valve assembly was bad.
John - March 10, 2017
👍 3 of 4 people found this instruction helpful
Tool Type
Compressor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set
Pulled head, replaced valve assembly and cleaned old gasket material from head and mating surface, replaced gaskets and torqued head on evenly. Works like new now.
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Piston rod broke, and slightly damaged piston.
Walter - July 2, 2017
Tool Type
Compressor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Wrench Set, Adjustable Wrench
Parts Used
Had to remove the cover and the motor from the air tank. Drain the oil to get to the piston assembly. Replaced parts. Reassembled and tested.
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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.
