VS-AQU Vertical Sump

The VS-AQU vertical sump pumps are used in a variety of applications where submersible pumps are not a good fit.  Many applications require a vertical sump pump in lieu of a submersible due to site conditions, such as metallic solids or high temperatures.  VS-AQU pumps use the AQU fluid end for hydraulic performance.  This heavy wall, enclosed, 304 investment cast stainless steel impeller design provides a durable and dependable product.  Due to the flexibility of this product line, HVAC & building trades markets are perfect matches for this product line but it can also be used in aggressive industrial applications.

Flow & Pressure Characteristics

Flows To:  9,000 GPM (2,440 m³/hr)
Heads To:  450 Feet (140 m)
Temperatures To:  200ºF (93ºC)
Speed Ranges:  900 RPM To 3600 RPM

Size Range

1.25×2-5 (32/13) – 12×14-16 (300/40)

Features & Benefits

  • Cast iron casing/investment cast 304 stainless steel impeller
  • Back pump out vanes or rear wear ring standard for hydraulic balancing
  • Back pull out rotor assembly design
  • Standard bronze, renewable case wear ring
  • Internal plan 1 seal/packing flush
  • Heavy duty, bronze, fluted inboard head bushing that can be supplied in a variety of optional materials
  • Francis, enclosed, high efficiency impeller with broad band operating range
  • 125# suction/125# discharge flange with 250# cast dimensions standard
  • Turned, ground and polished 420 stainless steel shaft standard
  • Separate, heavy-duty line-shaft bearing housings with fluted bronze bearing that can be supplied in a variety of optional materials
  • Maximum 5 foot bearing spans to minimize shaft deflection
  • Overall pump lengths to 25+ feet
  • Optional stuffing box/seal chamber for aggressive applications
  • Utilizes, stocked, standard C-Face motors
  • 56C through 449TC brackets for coupling to drivers
  • Optional strainers

Available Metallurgies

  • Cast iron, ductile iron, all bronze, 304 stainless steel fitted, 316 stainless steel fitted


  • Aerospace
  • Build Trades
  • Chemical Processing
  • Food & Beverage
  • General Industry
  • Irrigation & Agriculture
  • Marine & Offshore
  • Mining & Aggregate
  • Power Generation
  • Oil & Gas
  • Pharmaceutical
  • Pulp & Paper
  • Semiconductor
  • Water Resources