Macawber Engineering, Inc. products

The Denseveyor is a low velocity, dense phase pneumatic conveying transporter. It can easily convey tens of thousands of materials, including difficult-to-handle powders, granules, and others, using gases such as compressed air and nitrogen. The system design is simple with just one moving part, the Dome Valve, and offers a dust-free, fully enclosed conveying system that is economical and environmentally sustainable. The Denseveyor® operates automatically on an as-needed basis, as the machine rests when not signaled to operate. Advanced control options are available.

The Ashveyor is an ash conveying system dedicated for ESP, baghouse and other ash handling requirements such as EAF dust. Compact machine size is ideal for low-headroom applications and retrofits. The system is designed to operate as a stand-alone or multiple-vessel system on one conveying line. This arrangement has proven effective – even with ash at high temperatures.

The Sandpump is designed specifically for applications that require Sand Conveying. Small stature machine with top-side discharge makes it ideal for retrofit applications. Sandpumps are often designed into packaged casting systems for recovery of mold core material (typically sand). There have been thousands of installations world-wide.

The Cementveyor is the ideal replacement for screw pumps which can be inefficient and high maintenance. The Cementveyor is a version of our Denseveyor, modified for cement applications.

Originally patented in the late 1970′s, the Dome Valve is unique in its ability to open and close with a tight pressure seal in pneumatic conveying systems for abrasive materials.  No other valve can achieve as long of a life in harsh environments like the Dome Valve. We are the original designers and patent holders of the Dome Valve.

Switch valves and flow diverters are used in pneumatic conveying systems where there are more than one conveying route, reception point or a combination of the two. Keeping up with customer requirements for versatility has given us an opportunity to develop robust switch valves and flow diverters. These are operated automatically from the operator control panel.

Used where one single conveying pipe route terminates in a series of several reception points at roughly the same location. They are operated automatically from the operator control panel.

The Ash Breaker is a purpose-designed lump breaker and feeder prepared for the reduction of large lump material (up to 750mm) to less than 40mm in size, suitable for conveying through the Denseveyor and Ashveyor dense phase pneumatic conveying systems. The breaking action is achieved by means of two inwardly rotating breaker wheels manufactured with cast ni-hard breaking teeth which may be replaced without disassembly of the crusher unit. With minor modifications to the crusher, the unit is suitable for size reduction of coal and other materials.

Our filters are made of passive, cloth bag material with a reverse jet pulse cleaning system. NEMA 4 timer, controls, and solenoid enclosures (also available in NEMA 4×7 and 4×7) with a hinged bottom access service door.

Our pipe is nominally sized to meet the pneumatic vessel outlet diameter. Standard A53 sch. 40 material of construction (also available in 304 & 316 SS) and 150# ANSI B16.5 flange pattern. Preferred pipe connection arrangements are raised free slip-on flanges.