Optifeed B HD: Pneumatic Powder Transfer Pump

The Optifeed B HD is a pneumatic powder transfer pump that moves powder from a box or hopper to your feed center or application point at up to 7.9 kg per minute. It is built for production powder coating shops that run high volumes and cannot afford starved guns or stalled lines waiting on supply. If your throughput has outgrown gravity feed or a smaller transfer unit, this pump keeps powder moving at a steady, repeatable rate while holding maintenance time down. It suits job shops scaling up, captive coating lines, and any operation where consistent powder delivery is the bottleneck between the booth and finished parts.

Throughput built for production

Rated at up to 7.9 kg per minute, the Optifeed B HD carries enough powder to feed multiple guns or a busy automatic line without falling behind. The HD designation reflects the duty cycle: this is a pump sized for continuous shift work rather than intermittent touch-up jobs. Pneumatic operation means there are no powder-contacting motors or drive belts to wear, so the wear path is limited to a small set of serviceable parts. That keeps planned maintenance short and predictable, which matters when downtime on a running line costs you parts per hour. For shops weighing transfer capacity against reliability, the pump is built to hold its rated flow across long runs rather than peaking briefly and tapering off.

How venturi transfer works

The pump uses compressed air through a venturi to draw powder in and carry it through the delivery hose, so the powder is fluidized and moved by airflow instead of mechanical augers or pistons. This matters in practice: there is no grinding contact that shears the powder or generates fines, which protects charging performance and finish quality downstream at the gun. Because transport is air-driven, the flow path is simple and the parts that do wear (the throat and pinch components) are quick to inspect and swap. The result is gentle, continuous handling that keeps your powder usable through recovery and reuse, with fewer impact fusion or contamination problems than mechanical transfer can introduce on long production runs.

Tuning flow to your powder

Powders behave differently. A dense metallic flows nothing like a light textured powder, and feeding both at one fixed setting wastes material and clogs hoses. The Optifeed B HD separates transfer pressure from vacuum (suction) pressure, so you adjust how hard the pump pulls powder in independently of how hard it pushes powder out. That lets you dial delivery to match the specific powder in the box: more vacuum for a stubborn pickup, balanced pressure for a clean, steady stream to the application point. Operators set it once per powder and the pump holds that rate, which removes the guesswork that causes spitting, surging, and uneven film build. Our guide on the PM3 powder feed center, When 5-Minute Color Change Pays for Itself, covers how fast, repeatable feed settings shorten changeover and protect throughput across a color schedule.

Integrates with your supply setup

The pump pulls directly from a powder box or a hopper, so it drops into either virgin-powder or bulk-supply workflows without reconfiguring your floor. On the output side it feeds a powder feed center, an automatic gun manifold, or a single manual application point through standard powder hose. It runs on shop compressed air, which means no added electrical service and a straightforward connection to the supply you already have. For lines that mix manual and automatic spraying, the same pump can keep an injector-fed gun and a feed center supplied as your job mix changes. That flexibility makes it a practical building block whether you are adding capacity to an existing booth or specifying a new line from scratch.

Where it fits in your line

In a full coating line, the Optifeed B HD sits at the supply stage, upstream of spraying and feeding the powder that everything after it depends on. Parts come off pretreatment and drying, ride your overhead conveyor into the coating booth, and get sprayed by manual or automatic spray guns whose powder this pump delivers. Pair it with a PowCEQ powder feed center for clean color changes and reclaim, and the pump becomes the link between bulk powder and a fluidized, gun-ready supply. Downstream, coated parts move on to the curing oven to cross-link the finish. Whether you are building a new line around a booth and oven or debottlenecking an existing one, this pump removes powder delivery as the limit on how fast that line can run.