VNP Series
VNP Vertical Sump Pump
Vertical single-stage sump pump in polypropylene for wet-pit installation with solids to 20 percent
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Pump Category
VNP Vertical Pumps
The Flowsteer vertical series: polypropylene wetted parts, closed impeller, ISO 2858 back-pull-out construction and wet installation.
Products
Pump in This Category
The Problem
What This Category Is For
Sump contents are the least predictable liquid in any plant. Washdown, spillage, process drainage and rainwater all end up in the same pit, and no water analysis stays valid for long. Polypropylene wetted parts remove the need to know exactly what is in there.
Who It Suits
- Sites whose sump chemistry changes week to week
- Maintenance teams who need bearings they can actually reach
- Contractors matching column length to an existing pit
- Engineers specifying a sump pump against a solids percentage
Problems It Solves
- Metal columns corroding in a chemically mixed sump
- Solids loading above what a horizontal lined pump can take
- Seals that cannot be serviced without lifting the whole pump
- Column lengths that do not match the pit
Vertical sump pump with support plate, column and lifting handle
Advantages
Why This Category Is Built the Way It Is
- Polypropylene wetted partsPP covers a mixed and changing sump chemistry without a fresh analysis each time.
- ISO 2858 back-pull-outThe rotating assembly follows the same maintenance logic as the horizontal ISO pumps.
- Closed impellerEfficiency retained on a duty that still has to pass solids.
- -20 °C ambient to 80 °C operatingOutdoor pits in winter and warm process drainage from one construction.
Typical Application Scenarios
- Washdown and spillage collection pits
- Waste water wet wells on industrial sites
- Outdoor drainage sumps in cold climates
- Process drainage carrying up to roughly 20 percent solids
Where It Is Used
Industries That Specify This Category
Industry
Waste Water Treatment
Open impellers, polymer wetted parts and vertical sump pumps for screened sewage, return sludge, effluent and pit drainage.
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Industry
Industrial Water Transfer
Plant water, process circulation, booster and liquid transfer duties across the full Flowsteer size band.
Read moreQuestions
VNP Vertical Pumps FAQ
What does VNP stand for?
VNP is the Flowsteer series designation for its vertical, single-stage, wet-installed sump pumps in polypropylene.
Is capacity published for the VNP?
No. The source catalogue publishes construction, materials, sealing, temperature and solids limits but not capacity or head, so we mark those TBC and confirm them against your duty.
Can the VNP be supplied in metal?
PP is the published wetted material. Where the sump contents are known and non-aggressive, ask us whether a metal column is available for that specific duty.
What is the ambient temperature range?
-20 °C to 60 °C ambient, with an operating temperature up to 80 °C, so outdoor pits in cold climates are within the range.
Specify a VNP Vertical Pump for Your Duty
Send the flow, head, supply frequency and liquid description and we will confirm the size and the published specification for it.