STM AUTOMATIC PERIPHERAL WATER PUMP

Component

Pump Body: Cast Iron, with 304SS insert if request
Pump Support: Cast Iron, with 304SS insert if request
Motor Housing: Aluminum Alloy
Impeller: Brass
Motor Shaft: Carbon Steel, 304SS weld if request

Operating Condition

Liquid Temperature up to 60 ℃
Ambient Temperature up to 40 ℃
Total Suction Lift up to 9 m
Function: Self-Priming
Model A: Automatic Version

Motor

1~220V/50Hz, 110V/60Hz, 220V/60Hz on request
Insulation Grade: Class B
Cooling: External Ventilation
Protection: IP44
Build-in with Thermal Protector
Continuous Work S1

Model Parameters

Product Summary

The STM automatic peripheral water pump is a compact surface pump for clean-water supply, small pressure boosting, garden irrigation, tank feeding, and light transfer work. STM250(A), STM300(A), STM370(A), STM550(A), and STM750(A) cover 0.25 kW to 0.75 kW, maximum heads from 25 m to 50 m, and flow from 1.8 m³/h to 3.0 m³/h. A cast iron hydraulic section, brass impeller, IP44 motor protection, and a stated 9 m suction lift give installers practical data for household systems.

Detailed Description

A peripheral water pump builds pressure through a peripheral impeller channel and is selected for pressure-oriented clean-water tasks in a compact surface-mounted format. The STM automatic peripheral water pump is intended for clean water and liquids non-aggressive to its listed materials. Its self-priming configuration supports shallow-source lifting within rated suction conditions, while Model A is identified as an automatic version. This makes the STM automatic peripheral water pump relevant for storage tanks, low-pressure household supply, gardens, and small distribution systems. Total head, pipe length, fittings, source level, and suction-pipe sealing affect actual operation.

Key Features

The STM automatic peripheral water pump has a cast iron pump body and support with 304 stainless steel inserts listed on request. Its motor housing is aluminum alloy, and the impeller is brass. The motor specification includes Class B insulation, external ventilation, IP44 protection, a built-in thermal protector, and S1 continuous work. Each listed STM model uses 1 inch × 1 inch inlet and outlet connections. Automatic A versions use pressure-switch control for applications that require demand-based starts and stops.

Technical Parameters

The model table is the guide for STM automatic peripheral water pump selection. STM250(A) is rated at 0.25 kW / 0.33 HP and lists 1.8 m³/h maximum flow with 25 m maximum head. STM300(A) is rated at 0.3 kW / 0.4 HP, with 2.0 m³/h and 28 m. STM370(A) is rated at 0.37 kW / 0.5 HP, with 2.2 m³/h and 32 m. STM550(A) reaches 2.9 m³/h and 45 m at 0.55 kW / 0.75 HP. STM750(A) reaches 3.0 m³/h and 50 m at 0.75 kW / 1.0 HP. All listed STM models show a 9 m maximum suction lift.

Engineering Advantages

Peripheral impeller pumps are evaluated for pressure-oriented clean-water tasks because the impeller passages build pressure around the outer channel. For an STM automatic peripheral water pump, correct pipe sizing and suction-line sealing remain important because air leaks or excessive lift reduce available inlet conditions. The brass impeller is specified for clean-water duty, while the cast iron hydraulic section provides a stable mounting base. External ventilation assists motor heat management. The thermal protector responds to abnormal motor temperature conditions, but it does not replace correct installation or matching the pump to the duty point.

Applications

The STM automatic peripheral water pump can be considered for domestic water supply from storage tanks, shallow wells, and cisterns; low-pressure water boosting; garden irrigation; small tank filling; and clean-water transfer. Automatic models can be suitable where a simple pressure-switch response is required. The STM automatic peripheral water pump may also fit sheltered light commercial installations when required flow and head fall within the published data. It is not intended for sewage, abrasive particles, or chemically aggressive liquids. Install the pump in an enclosed or sheltered, ventilated location.

Commercial Value

For B2B buyers, the STM automatic peripheral water pump range provides five output steps in one compact product family. Shared connection size, common materials, voltage options, and automatic versions can simplify comparison and stocking decisions. Published power, flow, head, gross weight, and dimensions give distributors practical information for transport planning and installation discussions. CGO positions the STM automatic peripheral water pump around transparent clean-water data. Contractors can compare source conditions, desired outlet pressure, pipe losses, and duty cycles before selecting an STM model.

FAQ

Q:What liquid can an STM automatic peripheral water pump handle?
A:The listed use is clean water and liquids non-aggressive to the stated materials.

Q:What does A mean?
A:It identifies an automatic version.

Q:What is the maximum suction lift?
A:The table lists up to 9 m when the suction arrangement is suitable.

Q:How should a model be selected?
A:Compare required flow, total head, source level, pipe losses, and electrical supply with the table. Use an enclosed or sheltered, ventilated installation and follow applicable electrical and plumbing practices.