STjh DN50 1.1 kW chilled-water circulation pump with a deeper hydraulic body and medium motor on white.

STJH-CHILLED-WATER-CIRCULATION-PUMP-DN50-11KW

Chilled-Water Circulation Pump DN50 1.1 kW

A DN50 medium-head inline pump using a 1.1 kW motor and longer 200-class hydraulic for controlled-production chilled water.

DN50 flanged inline body
1.1 kW motor
200 hydraulic head class

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Product Introduction

The 1.1 kW version retains DN50 flanges but uses a longer impeller and 200 head-class hydraulic. It suits medium AHU coil circuits whose pipe, valve and heat-exchanger resistance exceeds the range of the compact 0.75 kW pump.

Key Features

Higher branch pressure

The extended hydraulic overcomes a medium network resistance without increasing pipe connection size.

Electronic speed option

Variable-speed control can follow valve position or differential pressure as coil demand changes.

Serviceable inline layout

The motor and cartridge remain accessible above the pipe centerline in a planned service zone.

Technical Parameters

Flange Size	DN50
Motor Power	1.1 kW
Hydraulic Head Class	200
Maximum Working Pressure	16 bar
Pump Construction	Inline centrifugal
Impeller	Extended medium-head hydraulic
Control	Variable-speed differential-pressure option
Fluid	Closed-loop chilled water
Mounting	Inline pipework with independent support
Customization	Flow setpoint, sensor package and valve accessories can be configured for the intended application and operating environment.

Applications

Medium chilled-water circulation for controlled-production AHUs, clean packaging coils and laboratory distribution branches.

Solutions for Your Application

The lower-head pump cannot overcome the combined valve and coil pressure drop.Use the 200-class hydraulic after plotting the required operating point on the pump curve.

Constant-speed operation may create excess differential pressure as valves close.Use electronic speed control with a suitably located pressure sensor.

Available Options

Integrated drive, remote pressure sensor, isolation and balancing valves, non-return valve, insulation and building-control connection can be selected.

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