These two 1½” Advanced™ high-pressure bolted metal AODD pumps utilize the energy-efficient Pro-Flo® SHIFT Air Distribution System. With a bolted configuration to ensure total product containment, the pumps feature redesigned liquid paths to reduce internal friction, maximizing output and efficiency. They are shear sensitive, dry-run capable, externally serviceable, completely submersible and comply with all CE and ATEX requirements. Model HS400S is available in aluminum, and model HS430S comes in stainless steel. Visit