Bevel Edge

Used to transport sticky material.

Flat Wire

For fine powders; provides the highest conveyor capacity.

Round Wire

Best for granular material such as salt or sugar.

Heavy-Duty Square

For heavy, abrasive material.

Pin Agitator

For fine powders and semi free-flowing materials.

Ribbon Agitator

Ideal for sluggish materials that may bridge or rathole.

Rotary Blade Agitator

Designed for larger lumps that will break up relatively easy.

Hopper Mounted Air Pads

Used to convey materials that tend to pack or settle.

Vibratory Hopper

For intermittent use to promote flow into the conveyor inlet.

Mobile Base

Allows you to move from process to process, replacing multiple conveyors.

Loss-in-Weight

Load cells are built into the hopper base for a fully automated dosing system equipped with programmable batch controls system integration. Also available with Hi/Lo functionality.

Inlet Boot

Fully Interlocked quick release inlet assembly for easy hopper maintenance, cleaning and auger removal.

Right Angle Drive

Designed to fit under low ceilings.

Center Core

Mitigates challenges when conveying very dense, fluid or highly aerated material.

Controls

Our in-house engineering team and panel shop supply standard configurations as well as custom packages for automation process optimization.

Dump Gates

Adjustable timer is built into the control panel providing intermittent refilling. Designed for shorter distances.

Rotary Valves

Provides continuous flow which can maximize capacity and convey greater distances as well as minimize the chance of material buildup due to starting and stopping.

Slide Gates

Allows for quick discharge for feeder refilling or when head room will not allow for a rotary valve.

Inlet Methods

Manual Wand Inlet (pictured) – Designed to be inserted into a drum or box and still draw air from above in order for system to maintain proper air : material ratio.

Blo-thru Inlet – Designed for metering into the system.

Flooded well Inlet – Designed for a small surge of material. The design allows an air intake so material is not choke fed.

Controls

Our in-house engineering team and panel shop supply standard configurations as well as custom packages for automation process optimization.

Layouts

There are a dozen or so basic layouts but the customization of those, particularly to leg lengths and bend angles is practically limitless. This enables the Tubular Drag Conveyor to meet the unique demands of every layout. Our expert application engineers and designers will work with you to discover the most efficient layout for your specific needs.

High Structural Integrity

Built to last, our conveyors are constructed using heavy Schedule 40 pipes—or Schedule 80 as an optional upgrade. This choice in material provides an exceptional lifespan against abrasion and deterioration that typically plagues thinner walled alternatives.

Interlocking Pipe Connection

Continuous welding and an innovative offset of slotted round flanges forge a strong, interlocking pipe connection. This design not only ensures a secure, steadfast assembly but also contributes to the overall rigidity of the conveyor system. Each pipe connection has a stamped number, the numbers are shown on the layout drawing and help erect the conveyor.

Sealed Pin Chain and UHMW Flights

Sealed pin chain is the most universally applicable as it is used for handling the widest range of material types, from gritty abrasives to food byproducts. Unlike open-architecture types, this heavy duty engineered chain utilizes sealing washers to keep material out of the articulating aspect of the chain, which can be extremely beneficial when handling certain products.

Rivetless Chain and UHMW Flights

Our first choice for many applications, this rugged, dependable drag chain performs exceptionally well in situations where an open architecture chain can be applied.

Rivetless Chain and Cast Iron Flights

Iron flights are one example of alternative flight types we offer, to overcome specific challenges such as elevated temperatures.

Uni-Seal Chain

Uni-Seal chain is like sealed pin chain but with a universal link in place of the standard center link. This allows the chain to navigate between bends with short straight lengths of pipe.

Round-Link Chain

Round link chain is commonly used in conveying applications because it is versatile, readily available, and economical. In tubular drag conveyors, it is especially valuable for its flexibility—allowing two bends in different planes to be located close together while maintaining smooth material flow.

​Self-Cleaning Discharge Gate

Our rounded gates conform to the pipe, which acts much like a bomb bay door, so there is no place for your material to become trapped.

Chain Hammers

An impact shoe assembly attached to the free end of the spring projects through a seal inside the conveyor and into proximity with passing flights (pucks). When energized, movement of the spring plate causes the impact shoe to reciprocate, striking the flights with enough frequency and amplitude to dislodge materials that may otherwise have a tendency to stick to the chain.

Brush Box

Often used in addition to chain hammers or air knives and usually at the last discharge points, brush boxes can provide an added measure of flight and chain cleaning to minimize problematic material build up and carryover. These have also been incorporated into schemes utilizing washing, rinsing, and deodorizing.

​Auto-Tensioner

For some applications the layout of the conveyor, or the lack of maintenance availability, can create a scenario in which the conveyor’s chain tension is not monitored and adjusted as needed. This could create a potential problem. For this the answer is the Auto-Tensioner. This air-over-hydraulic automatic tension system provides consistent pressure to make sure that the chain is at its optimum tension. When it is time for manual intervention a notification will be sent to your main PLC.

Clean-In-Place

As may be required by various plant equipment cleaning protocols, Hapman Tubular Drag Conveyors can be cleaned-in-place. This can be done in one of two ways. The first is that we can supply tubular drag conveyors which are CIP-ready, which is to say they are inclusive of all the features such as nozzles, supply valves, drain valves, isolation valves and connections necessary to integrate with an exciting CIP system. The second is a more comprehensive approach wherein Hapman also supplies the tanks, pumps, valves, and PLC controls.

Controls

Our in-house engineering team and panel shop supply standard configurations as well as custom packages for automation process optimization.

Cable & Flight Assemblies

Proprietary self-lubricating UHMW flights are injection molded onto abrasion-resistant, food-grade coated, pre-stretched, stainless steel cable. Cable and flights are impregnated with FDA-approved friction-reducing modifiers to extend component life.

Stainless Steel Sprockets

Engineered for prolonged durability while the polished edges reduce cable fray.

Patent Pending Cable Connector

Designed to outperform traditional snap-ring connectors, this robust assembly installs quickly with standard hand tools and delivers long-term reliability. Its ability to allow controlled cable rotation helps prevent twist and derailment—reducing maintenance time and keeping your conveyor running.

Seamless Tubing

Labor-saving installation with tubing engineered and cut to application length, flanged, and match-marked for faster assembly. Fully seated tube ends for guaranteed tight gap, avoiding areas for food harborage.

Auto-Tensioner

Auto-Tensioner maintains proper pressure to ensure optimum performance, minimize wear, and reduced downtime.

Layouts

Designed to adapt to any layout, our conveyors are customized by expert engineers to ensure the most efficient configuration for your unique needs.

Sponge Disk

Single-use sponge utilized to apply cleaning agents and assist removal of liquid after washdown.

Wiper Disk

Designed to remove accumulating fines and particles during or assist removing liquid after cleaning.

Brush Box

Installed after the final discharge point, this solution features a rotatable brush that effectively cleans the cable and disks. Removes any residual carryover for a cleaner operation.

Air Knife

A strategically placed device that uses compressed air to blow off accumulating fines from the disks.

Scraper Disk

Works to dislodge material that has stuck to the casing walls.

Clean in Place

The fully sealed system with integral drain points enables water, foam, and chemical cleaning methods.