Pneumatic bulk unloaders supply ambient sealants, adhesives and other medium to high-viscosity materials. Feed systems for magna drums work well for automotive applications where underbody material is sprayed and sealing beads are applied to a car body.

• Durable neoprene rubber wiper rings are assembled to the ram plate by 3/4 in (19.1 mm) banding strap to keep the wiper firmly and securely attached to the plate.
• Strategically placed vent valves and shock-absorbing exhaust restrictors maintain a smooth exit of the ram plate, keeping it clean and maintenance-free.
• Specially designed mounting collar anchors the pneumatic pump to the ram plate, assuring trouble-free operation and allowing for quick pump change-out during routine maintenance.
• Manual bleed valves located near the pump inlet assist in quick pump priming.
• Vent valve reservoir allows compatible solution or water (for water-based materials) to cover the vent valve and prevent drying of materials.