Don't hit buy free advise. 
A correctly flowing manifold is important.
Three parts to a manifold.
Media intake.
Air intake.
Media discharge.
All our HP Manifolds are made for optimal performance.
Manifolds with excellent mix and flow characteristics.
Media buffer with air throttle port cut and angled.
How they work.
First stage.
Media enters the mix manifold by low pressure down the buffered media pipe tube. The pipe tube blocks the rear part of the mix chamber. The buffered media pipe tube has a small hole, this small hole is used to concentrate the incoming High pressure air.
The air throttle is the power, the high pressurized air enters the rear section of the media buffering tube, as it passes into the small hole it creates a scavenging Venturi effect sucking the media from the media buffering tube. This creates power and allows you to get better mixing of media and high pressure.
We offer the following manifolds:
💥HP Manifold for 3/8 pots. Pots with 3/8 bottom discharge bung and 3/8 air throttle. 
Easiest way to tell, check out the bottom or top ball valve, the size is stamped or molded to the body of the ball valve. All stock Harbor Freight pots use 3/8.
Our manifold format.
3/8 air throttle 3/8 media intake 1/2 discharge, to the blast hose.
💥 HP Manifold for 1/2 Pots. Pots with a 1/2 bottom bung and 1/2 air throttle.
Easiest way to tell, check out the bottom or top ball valve, the size is  stamped or molded to the body of the ball valve. All Eastwood, ALC Allsource, Vevor pots use 1/2.
Our manifold format.
1/2  air throttle 1/2 media intake 1/2 discharge, to the blast hose.
💥Threaded HP Manifold.
This Manifold is exclusively used on our Elevated Control Kit.
Used for ANY SIZE  ALC Allsource CONCAVE Plunger top pots. Used for the Vevor 10 gallon concave plunger top.
💥 Remote Manifold.
This Manifold is used on our pressure washer gun kit. It is also sold as an individual part for those who want to build their own set up.  This Manifold is used in the PiStola Kit.
Manifold format,
Air Intake 1/4 media intake 3/8 media discharge 1/2.
This Manifold offers incredible versatility and performance.