1.Description

Pentair PWT Series High‑Pressure Multistage Centrifugal Pump Model PWT100‑80‑315

This pump handles media without solid particles. Multiple material configurations are available for different pumped fluids.

Operating Conditions

• Flow rate: 0.4‑180 m³/h

• Head: 8‑300 m

• Liquid temperature: ‑15 ℃ ~ +120 ℃

• Minimum inlet pressure: NPSH curve value plus a minimum safety margin of 0.5 m.

Pump Features

• Vertical construction with inlet and outlet flanges on the same centre‑line. Compact footprint for easy installation.

• Cartridge mechanical seal for reliable sealing and convenient maintenance.

• Stainless‑steel wetted parts for extended service life.

• Direct coupling between motor shaft and pump shaft for high alignment accuracy.

• Excellent hydraulic performance.

• Low noise and low vibration.

• Modular design with high part commonality.

• Aesthetic appearance.

Application Fields

The APV‑series pump is a versatile product. It handles various media ranging from tap‑water to industrial liquids and delivers reliable, energy‑efficient operation across diverse temperature, flow and pressure ranges.

Water‑supply systems

• Water‑plant filtration & fluid transfer

• Zoned water delivery in waterworks

• Main‑network pressurization

Pressurization

• Process water systems

• Washing systems

• High‑pressure flushing systems

• Vehicle washing

• Fire‑protection systems

• Liquid transfer

• Cooling & air‑conditioning systems

• Boiler feed‑water & condensate systems

• Machine‑tool support

Water treatment

• Ultrafiltration systems, reverse‑osmosis systems

• Softening & electro‑desalination systems

• Distillation systems

• Separators

• Swimming pools

Irrigation

• Farmland irrigation

• Sprinkler irrigation

• Drip irrigation

Heating, ventilation & air‑conditioning (HVAC)

• Hot‑water circulation

• Temperature control

• Refrigeration & cooling

• Heating

• Heat exchangers

• Water recirculation & heating

2. PWTD Series High‑Pressure Multistage Centrifugal Pumps

PWTD‑Series Pump Overview

PWTD‑series pumps are single‑casing horizontal segmental‑type multistage centrifugal pumps. With different material options for wetted components, they serve factories, mines, oil fields and water‑supply sectors. They convey solid‑particle‑free clean water and other corrosive liquids and excel in high‑pressure scenarios including seawater desalination, pipeline boosting, oil‑field fluid handling and mine drainage.

Operating Parameters

• Flow range: 54‑540 m³/h

• Head range (design point): 18‑1264 m

• Rotational speed: 2985 r/min, 1480 r/min

• Maximum allowable discharge pressure: ≤16 MPa (varies by model)

• Maximum allowable suction pressure: ≤1.0 MPa

• Medium temperature: 0 ℃ ~ +80 ℃

• Flange standard: GB/T9113.1‑2000; ANSI or DIN are optional

• Inlet nominal diameters: DN100, DN150, DN200, DN250

• Outlet nominal diameters: DN100, DN150, DN175, DN200, DN250

Product Features

• Small radial clearances provide inter‑stage dynamic sealing for high efficiency.

• Replaceable sealing rings and diffuser sleeves preserve high pump efficiency and cut maintenance costs.

Bearings

• Sleeve bearings of globally renowned brands are adopted.

• For sleeve‑bearing configurations: oil‑slinger lubrication or forced oil lubrication. Cooling water can be connected to cool bearing shells for enhanced operational reliability.

High‑Efficiency Hydraulics

• First‑stage impeller specially optimized for low NPSH.

• High‑precision moulds; impellers, diffusers and intermediate sections are precision‑cast for accurate dimensions and smooth flow passages.

Specialized Sealing Design

• Metal‑face seals with O‑ring auxiliary sealing deliver robust sealing performance for high‑temperature and high‑pressure service.

Flange Standards

• Standard flanges comply with GB; ANSI‑ or DIN‑compliant flanges are available upon request.

Stable Performance

• Impellers undergo static balancing; complete rotor assemblies are dynamically balanced at operating speed.

• Both shaft‑seal chambers operate under low suction pressure, benefiting long‑term shaft‑seal reliability.

Axial‑Force Balancing

• Balance‑disk structure automatically offsets axial thrust.

• Balance disk and balance ring contact surfaces receive special surface treatment to guarantee hardness and wear resistance.

3. PWT‑Series Horizontal Single‑Stage End‑Suction Pumps

PWT‑Series Pump Overview

The PWT‑series horizontal single‑stage end‑suction centrifugal pump is a robust, high‑performance standard end‑suction pump developed by Pentair Water Group for the Chinese market. Its design, manufacturing and testing comply with ISO 5199 (GB/T 5656, Technical specifications for centrifugal pumps‑Class II) and ISO 9906‑99 (GB/T 3216‑2005, Rotodynamic pumps‑Hydraulic performance acceptance tests‑Grade 1 and 2). It is an internationally‑accepted horizontal centrifugal pump.

Application Scope

PWT end‑suction pumps convey thin, clean, non‑explosive liquids free of solid particles and fibres. Typical applications:

• Water treatment

• Building water‑supply pressurization

• Building fire‑protection

• Air‑conditioning systems

• Seawater desalination

Operating Conditions

• Flow range: 5‑1800 m³/h

• Head range: 2‑250 m

• Standard speeds: 2900 rpm, 1450 rpm

• Working pressure: 1.6 MPa; higher for high‑head models. Working pressure = inlet pressure + shut‑off pressure (Q=0).

• Maximum inlet pressure: 4 bar as standard; specify higher inlet‑pressure requirements at order time.

• Liquid temperature: ‑20 ℃ ~ +80 ℃

• Inlet nominal diameters: DN50‑DN350

• Outlet nominal diameters: DN32‑DN300

Product Features

Compliant with ISO 5199:

• Non‑self‑priming single‑stage volute centrifugal pump; horizontal axial suction, vertical top discharge, single‑end cantilever horizontal centrifugal pump.

• Overall dimensions conform to ISO 2858.

• CFD‑aided hydraulic design ensures stable performance and high efficiency.

• Modular design with six heavy‑duty power frames across the full range for high component commonality.

• Short cantilever overhang and large‑diameter pump shaft support long‑term stable operation.

• Back‑pull‑out construction: maintenance can be performed without dismantling pump casing or process piping.

• High‑head variants feature double‑volute construction to reduce radial forces under off‑design conditions. This improves service conditions for mechanical seals and bearings and lowers vibration and noise.

• Inlet and outlet flanges can be manufactured to GB, ANSI or DIN standards.