Feed Systems

Feed Systems

The feed systems get the material from the drums out to the spray gun.

The incoming feed system supplies the isocyanate and resin components from bulk containers to your proportioner. Once the materials are heated and pressurized, the outgoing feed system delivers properly proportioned materials to your spray gun through heated hoses.

How do the A and B materials get from the barrels to my equipment?

The incoming and outgoing feed systems get the material from the drums out to the spray gun.

Incoming Feed System

Typical spray foam and coatings applications use stick or diaphragm pumps to supply bulk materials to the proportioner. The type and size of supply pump depends on the type of material you are spraying and equipment flow rates. Material manufacturers will recommend a type of pump needed to supply their material.

Typical spray foam and coatings applications use stick pumps to supply bulk materials to the proportioner

The size (flow rate) of the supply pump depends on the requirements of the proportioner

Outgoing Feed System

Heated hoses are used during the spray process to maintain material temperatures between the proportioner and the spray gun. Heated hose lengths can be up to 400 feet (122 meters) long, therefore, it is necessary to keep the material heated as it travels through the hose out to the spray gun. Maintaining temperatures helps to ensure proper mix and ratios at the point of application.

Hose sets are sold in 50 ft. lengths and are joined together to reach the total length required

Most hose sets include a lighter weight 10 ft. whip hose

Material Mixing System

Some but not all spray foam and coating materials will require mixing. Graco’s Twistork Helix Mixer is designed with patented, helix-shaped mixing blades. Its gentle mixing action reduces fluid degradation and splashing compared to propeller blades. Mounts through the bung opening of the drum head.

Not all materials require mixing check with the product data sheets for mixing information

Mounts through the bung opening of the drum head