NES Drop-Through Rotary Airlock Valves provide precise and efficient material handling in pneumatic conveying and metering applications. The drop-through design allows gravity-assisted material flow while preventing air leakage and maintaining system pressure. The standard version features cast iron or stainless steel (304/316) construction, bore sizes from 6” to 18” [150 mm to 450 mm], and six to ten-vane rotors. These valves handle up to 15 psi differential pressure and 482°F [250°C] operating conditions with 20-30 RPM rotational speeds. Designed for reliability and durability, they include replaceable wear components and adjustable air purge connections. Industries such as food processing, chemical, pharmaceutical, plastics, and bulk material handling rely on these valves for consistent, controlled product flow in demanding applications.
About NES Drop-Through Rotary Airlock Valves
Sub-Series: DT, DT-DCSR, DT-DCSR VER 2T, DT-SD, DT-SD-DCSR, DVT, DVT-DCSR, DVT-DCSR VER 2T, DVT-SD, DVT-SD-DCSR, DST, DTL, NDT REC, NDT RND
Rotation Speed: 20-30 RPM
MOC: Cast Iron standard, Aluminum or Stainless Steel available
Design: DIN/ANSI/JIS Drilling Patterns available. 10 bar pressure shock resistance.
Operating Temperature: Up to 302 deg. F
Rotor: Standard 9-Bladed Rotor. 6 to 10-bladed Rotor available. U-Shaped Rotor Pocket available.
Internal Coating: None standard. Chrome or Tungsten Carbide Coating available.
Accessories: Air Purge Glands, Drop-out Box, Inlet Restrictor, Zero Speed Sensor, Rotor Interference Sensor (RIS), High Temperature Modifications, Pressure Regulator, Flow Meter, ATEX/IECEX-Rated Electrical Components
Applications: Dairy, Food, Chemical, Plastics, Pet Food, Pharmaceutical, and other Dry Bulk Material Handling industries. Lean Phase Pneumatic Conveying in Pressure and Vacuum, Gravity Feeding, and Metering.
