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Valve Plate Assy.

Part Number: AB-A640050
Availability: 25+ in stock
Price: $11.96
Ships within 1 business day
This is a genuine Bostitch replacement part, it is sold individually.
The purpose of the Valve Plate is to allow into the cylinder. Once the piston starts traveling up the reeds on the Valve Plate open and air is sent into the air tank.

Overtime the reeds will become worn and the Valve Plate will need to be replaced.
This is also a good time to replace the head gaskets.


This part is compatible with the following machines:

Repair Stories
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Tool Type:
Parts Used:
Valve Plate Assy. - AB-A640050
Cyl.-Plate/Plate-Head Gasket - AB-A650300
Repair Difficulty:
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Wrench Set, Nutdriver, Adjustable Wrench, Alen wrench
During my basement remodel, my Bostitch air compressor quit building up pressure. It sat idile for 3 years. Bought another inexpensive compressor but ccouldn\
Simple repair. Removed the cover. Removed air tube from compressor head. Removed 4 head bolts. Removed the head, valve plate assembly and gaskets on both sides of the valve plate. Reassembled in reverse order. was fast in shipping the parts and was over half as expensive as other places. Second time I used them and will continue to with next project.
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Product Information
Manufacturer: Bostitch
Category Number: AB-A640050
Classification: Part
Weight: 0.15 lbs.
Shipping: Ships Worldwide world wide shipping icon
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