PUMP HOTSY HS3540G3, 3.5 @ 4000, 3400 RPM Pacific Bay Equipment Sale! from $776.00 Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Hotsy HS.3 Series: Direct Drive 3.5 GPM 4000 PSI 13.5 HP 3400 RPM 1" shaft