GRACO® AF4242 (-01) Flat Stainless Steel Mix Chamber for Fusion® AP Spray Guns

Regular price $249.78

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Graco Fusion AP Flat Mix Chamber (-01)

The GRACO® AF4242 is a stainless-steel, flat-pattern mix chamber sized -01 for Fusion® AP spray guns. It helps deliver consistent material mixing and spray performance, with listed orifice and impingement port dimensions for precise output.


Key Features:

  • Fusion® AP Compatibility: Designed for use with Fusion® AP spray guns.
  • Stainless Steel Construction: Built for durability in demanding spray-foam applications.
  • Flat Pattern Output: Flat pattern style for controlled coverage.
  • Precision Flow Geometry: Defined orifice and impingement port sizes support consistent mixing and spray performance.
  • -01 Equivalent Size: -01 chamber size for matching your gun setup and output needs.

Specifications Table:

Specification Details
Product name GRACO® AF4242 Mix Chamber
Manufacturer part number GRAF4242
Part number (AF series) AF4242
Category Spray Foam Equipment
Equivalent size -01
Size -01
Style Flat
Pattern Flat
Material Stainless Steel
Suitable for use with Fusion® AP Spray Guns
Orifice size 0.094 in
Nozzle drill bit 3/32 in
Impingement port size 0.042 in
Impingement drill bit size 1.00 mm

Frequently Asked Questions (FAQ):

Q: What spray gun is this mix chamber compatible with?
A: It is suitable for use with Fusion® AP spray guns.


Q: What size is the AF4242 mix chamber?
A: Its equivalent size is -01.


Q: What material is it made from?
A: It is made of stainless steel.


Q: What pattern/style does it provide?
A: It is a flat pattern (flat style).


Q: What are the key listed dimensions/specs?
A: 0.094 in orifice size; 3/32 in nozzle drill bit; 0.042 in impingement port size; 1.00 mm impingement drill bit size.


Precision Hardware for Flawless Finish Work

In the best spaces, the finish is everything—and the tools behind it deserve the same level of intention. This flat, stainless-steel mix chamber brings a disciplined precision to your Fusion® AP setup, shaping a consistent spray pattern that supports beautifully even application. Pair it with a meticulous masking plan and a clean pass strategy to elevate results on detail-heavy builds. It’s the quiet essential that makes elevated work feel effortless.


Choose the GRACO® AF4242 -01 flat mix chamber to dial in consistent Fusion® AP spray performance.

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Subject to Approval & Availability
All orders are reviewed before fulfillment. You are not charged until your order is approved and ready to ship — and you may cancel at any time before that at no cost.

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