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For decades Clyde Bergemann Delta Ducon has been supplying rotary valves to handle extremely abrasive materials. The PERMA/flo "XL" rotary valve has been considered the valve of choice by many customers who demand long life and high quality. The basic design of the "XL" has remained unchanged since 1964. UNTIL NOW. At this time CBDD is pleased to introduce a new product in it's line of PERMA/flo rotary valves. The new eXTreme ("XT") Feeder. The "XT" line of rotary valves are based on the time proven concept of the "XL".
  

The major enhancement of the "XT" is the increased throat dimension on the 6" through 12" models. The increased throat provides up to an additional 82% over the existing "XL" design. This was done by increasing the number of pockets in the rotor from nine to ten. This in turn allows the inlet shoe to widen, exposing a two-pocket width in lieu of one. This extra width minimizes possible bridging while increasing pocket fill efficiency. Sizes 14" through 24" shall remain our traditional “XL” design.

The "XL" and “XT” series, can be applied as rotary feeders and airlocks. Both the “XL” and "XT" series of rotary valves feature a unique design that offers adjustment between the rotor and the seal shoe. This adjustability enables the rotor to seal shoe gap to be maintained providing the tightest seal possible through out the life of the unit.   Both the rotor and seal shoe are constructed of a special chrome-iron alloy called P-33. This alloy yields a hardness of 500-600 Brinell. Unlike other valves that feature a surface hardening, P-33 is a solid alloy casting that does not wear off to expose a softer metal base.

STANDARD “XT” & “XL” FEATURES: P-33 Alloy Rotor & Inlet Shoe. Field adjustable rotor to shoe clearance. Heavy cast iron housing. Outboard bearings. Shaft air purge ports. OPTIONS: Shaft air purge kit. Zero speed switch. Vent hoppers. Support stand. Variable speed control. NFPA compliance.    Click Here for XT / XL Feeder Specification Sheet ( opens a new window )