Wm. W. Meyer & Sons, Inc.

DDV dust duty valve
The DDV dust duty valve is suitable for use with baghouse and cyclone dust collectors. It is designed for applications where a quality air seal is necessary, and can withstand temperatures up to 300°F. The DDV features a robust cast housing that is available in round or square flange patterns. A split packing ring design allows for easy maintenance with no valve disassembly, and a direct-connected drive with a large gearbox eliminates the need for chain maintenance. Rotors can be customized with urethane seal strips.

Pneumatic Screw Pump
Designed for the chemical, cement and mining industries, this pneumatic screw pump is a heavy-duty injection pump that feeds dry pulverized material into a pneumatic conveying line. Constructed with a heavy steel channel frame, oversize bearings, integral check valve and low inlet-hopper height, it is capable of conveying pressures up to 15 psi. It can handle highly abrasive, friable or very fine powders that typically wear out other dilute-phase feeders. Unlike rotary airlocks that require tight clearances to seal against conveying air, this pump uses the material to form the seal. An integrated gate prevents blowback, and the pump can withstand temperatures up to 450°F. It offers increased wear resistance to abrasive materials, as well as a low profile and longer bearing life with fewer system shutdowns, resulting in reduced operating and maintenance costs.