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TPW Horizontal Monoblock End Suction Pump| Value Option

TPW pumps are non-self-priming, single-stage, cantilever monoblock centrifugal volute pumps with axial inlet port, radial outlet port and horizontal shaft on the base. They are available in PN16 and PN25 body pressure versions. The pumps are fitted with air-cooled asynchronous motors. Impeller and motor shaft are connected via a rigid sleeve coupling (stub shaft), or via extended motor shaft. The pumps are fitted with a mechanical shaft seal. The pumps are of the back-pull-out design, that is you can remove the motor, motor stool and impeller without disturbing the pump housing or pipes.The impeller adopts metal mold and precision casting made by CNC machining center. What's more, if the temperature of pumping medium is at -25 degrees to 0 degree, the standard sealing friction auxiliary can change from C/SiC to SiC/SiC, and a warranty is included to guarantee the pump's longevity and reliability, reinforcing confidence in the product.

Application

· Industrial liquids, such as liquid circulation
· Central heating system
· Circulation water for cooling and freezing system
· Fire-fighting system and drainage pump station
· Water supply for industry and building
· Used for municipal water supply, agricultural irrigation

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Model:
TPW

Product Description

Product Features

Product Structure

FAQ

Introduction

Introducing the TPW Horizontal End Suction Pump from TQPUMPS, a single stage pump designed for efficient water circulation in various applications. With a maximum flow rate of 1750m³/h and a maximum head of 150m, this high efficiency pump is capable of handling demanding pumping tasks.

The TPW series features a robust horizontal configuration and flexible installation options, including B35+ mounting. Available with outlet diameters ranging from DN32 to DN350, this centrifugal pump can be customized to suit specific requirements.

Equipped with an IE3 efficiency motor, the TPW pump offers energy-saving performance and reduced operating costs. The motor power ranges up to 315KW, with multiple speed options available (2950/1480/985RPM) to optimize pumping efficiency.

The TPW pump incorporates a reliable mechanical seal and F-class insulation for enhanced durability. With a maximum working pressure of PN16/PN25 and an IP55 protection rating, this pump is built to withstand challenging conditions.

Suitable for liquid temperatures ranging from -20°C to 80°C, the TPW pump is versatile and adaptable. The air cooling system ensures efficient heat dissipation, maintaining optimal performance.

TQPUMPS offers customization services and online after-sales support to ensure the TPW pump meets your specific needs. This CE-certified pump is designed to deliver reliable and efficient pumping solutions across industries.

Technical Parameters

Parameter	Value
Maximum Flow Rate	1750m³/h
Maximum Head	150m
Voltage	380V
Frequency	50Hz
Speed	2950/1480/985RPM
Maximum Motor Power	315KW
Structure	Horizontal, foot mounted
Installation Type	B35+
Outlet Diameter	DN32-DN350
Efficiency Class	IE3/IE2/IE4
Seal Type	Mechanical Seal
Insulation Class	F
Maximum Working Pressure	PN16/PN25
Protection Class	IP55
Liquid Temperature Range	-20°C-90°C
Cooling Method	Air Cooling
Product Certification	CE
Customization	Available
After-sales Service	Online Service

Hydraulic Performance

TPW vs TWZ End Suction Pumps — Same Hydraulic Design, Two Structures

Introduction

The TPW and TWZ series are our two horizontal end-suction circulation pumps built on the same hydraulic design — identical impeller and casing hydraulics deliver the same flow, head and efficiency. What makes them different is the structure, and each structure brings its own advantages. Choose the one that best matches your temperature, maintenance and budget requirements.

TPW Series — Close-Coupled End Suction Pump

In the TPW, the impeller is mounted directly on an extended motor shaft, so the pump has pump shaft of its own. This close-coupled construction gives it a short cantilever, which keeps shaft deflection and vibration low and makes running more stable and reliable. Thanks to the compact design, the TPW covers a wider performance range — from DN32 up to DN350 — and, because it needs fewer components and no coupling set, it is more economical and cost-effective than a long-coupled pump of the same duty.

TWZ Series — Stub Shaft End Suction Pump with Standard Motor

The TWZ uses a standard IEC B3 motor and a stub shaft, connected through a rigid coupling. Because the pump is isolated from the motor, the TWZ is suitable for much higher liquid temperatures — up to 140 °C (versus 80 °C for the TPW) — making it the right choice for hot-water and heat-transfer duty. It also uses a standard, widely available B3 motor, so the motor is easier to source, replace or interchange in the field, which simplifies long-term maintenance.

	TPW (Close-Coupled)	TWZ (Stub-shaft)
Structure	Impeller on extended motor shaft, no separate pump shaft	Standard B3 motor + independent shaft, rigid coupling
Stability	Lower vibration, more stable running	—
Size range	Wider — DN32 to DN350	Consult our engineers for range
Max. liquid temperature	80 °C	140 °C
Motor interchangeability	Motor matched to pump	Standard IEC motor, easily interchangeable
Cost	More economical	Higher (extra shaft, coupling, base)
Best for	General water circulation at normal temperature, budget-conscious projects	Hot water / heat-transfer systems, easy motor replacement

Selection tip: For standard cold/hot water circulation up to 80 °C where budget matters, choose TPW. For high-temperature duty up to 140 °C, or where you want a standard motor you can swap out anywhere, choose TWZ.

TPW Structure Component

FAQs

Q1: Why is the TPW more stable in operation?

Because the impeller is mounted directly on the motor shaft, the cantilever is short. This reduces shaft deflection and vibration, giving smoother, more stable running.
Q2: Which pump is more economical? TWZ/TPW

The TPW. With fewer components — no separate shaft, coupling and coupling guard — it is the more cost-effective option for the same duty.
Q3: What brand of TPW's motor bearing?

Normal configuration is C&U,a brand of Chinese listing company. Options can be NSK and SKF bearing, which is on request
Q4:What size and performance range is available?

The TPW covers a wide range from DN32 to DN350. Both series are available with YE3 / YE4 / YE5 efficiency motors (380 V / 50 Hz, 2- and 4-pole), and flanges conform to GB/T17241.6 (equivalent to ISO7005-2 / EN1092-2), PN16 and PN25.