• PalmerVent is a permeable, woven tube that can substantially improve your core and mold venting procedures. Its porous design can eliminate the never ending problems that come from insufficient core venting. PalmerVent can also be used in many core applications to impart a hollow section of core for improved collapsibility. 
• PalmerVent is available in sizes ranging from 1/8" to 2" diameter. PalmerVent is extremely flexible allowing it to be configured as needed within the core. When placed in the core box during ramming it provides a positive, open channel through which gases generated during pouring can escape to atmosphere. 
• As an integral part of the core, PalmerVent creates a permeable ductwork to route combustion gases out of all areas of the core. PalmerVent provides a cost effective, consistent way to eliminate the cleaning room problems and scrap castings caused by improper or insufficient core and mold venting. 
• Unique construction offers excellent rigidity when used in rammed and compacted mold situations.

Available in:

• 1/16" - 300' Roll - PN307 
• 3/16" - 200' Roll - PN308 
• 1/8" - 300' Roll - PN300 
• 1/4" - 200' Roll - PN301 
• 3/8" - 200' Roll - PN302 
• 1/2" - 200' Roll - PN303 
• 3/4" - 200' Roll - PN304 
• 1" - 100' Roll - PN305 
• 2" - 50' Roll - PN306

1. Cut PalmerVent to the desired length for the core or mold area to be made. Generally, the less permeable the sand, the more venting should be used. Vent material should extend at a minimum to the core print area for later venting through the mold. If used in a mold application, run the end of the vent system to the side of the molding box or parting line if using a flask. A vent open to atmosphere upon completion will be far more effective than a sealed vent. 
2. Check fit in the core or mold area. As necessary, PalmerVent can be tied in loose knots to surround a particular feature or simply laid flat. If two vents cross, tie them together loosely to combine their venting effectiveness. 
3. Once venting is fitted, begin filling of the core or mold box. The venting should be placed as close to the mold to metal interface as is practical without the venting going into the metal cavity. Generally, the closer the venting is to the surface, the better the gas removal will be.