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Steam pressure reducing unit HTG-PR

Optional steam pressure reducing units are designed for use with heating units of the HTG, HTGi series and are used when the steam pressure supplied to the unit exceeds 4.5 barg.

The unit includes the following basic equipment:

pressure reducing valve (or control valve with electric or pneumatic actuator and positioner);
safety valve;
trap group at the drainage point and a common condensate line;
shutoff valves;
control instruments.

The unit operation is controlled from the control panel of the main HTG unit. Unit also can be equipped with a metering kit for steam consumption based on a variable area flowmeter.

Configuration example

Steam pressure reducing unit with steam metering HTG-PR-750-DP-VAunit for heat transfer package [name the heat transfer package] of 480 kW thermal power

	For standard package configurations			For customized package configurations
Limitations	Output	Up to 2600 kg/h		Determined based on the Questionnaire information
	Inlet steam	Up to 12.8 barg	Up to 195 *С
Connection to the electricity grid (для моделей с PN, EL)	From the control panel of the modular heat transfer package HTG/HTGi
Compressed air	6,0-9,0 barg, free of dust, moisture and oil (in compliance to ISO 8573-1)

	For standard package configurations	For customized package configurations
Control valve, pressure reducing valve	Cast iron	Determined based on the Questionnaire information
Stop valves, strainers and filters, safety valves	Cast iron
Thermodynamic traps, pipeline connectors	Stainless steel
Check valves	Stainless steel
Ball valves	Carbon steel
Steam flowmeter	Stainless steel
Steam pipelines	Carbon steel*
Condensate pipelines	Carbon steel*
Frame	Carbon steel*

HTG-PR-150-DP, HTG-PR-150-PN, HTG-PR-150-EL	Option for modular heat transfer package with power from 50 up to 150 kW.
HTG-PR-450-DP, HTG-PR-450-PN, HTG-PR-450-EL	Option for modular heat transfer package with power from 150 up to 450 kW.
HTG-PR-750-DP, HTG-PR-750-PN, HTG-PR-750-EL	Option for modular heat transfer package with power from 450 up to 750 kW.
HTG-PR-1500-DP, HTG-PR-1500-PN, HTG-PR-1500-EL	Option for modular heat transfer package with power from 750 up to 1500 kW.

Steam pressure reducing unit HTG-PR

Technical information

Materials

Configuration types

Supplied types:

Dimensions and weight of customized configurations

Dimensions and weight of standard configurations (approximate)*

Control system

Selection and installation details

Configuration example


HTG-PR-DP- .. – pressure reducing unit, steam pressure is reducted with a pilot-operated pressure reducing valve.	HTG-PR-PN- .. – pressure reducing unit, steam pressure is reducted with a control circuit, which includes a pressure sensor, a pneumatic valve and a positioner.	HTG-PR-EL- .. – pressure reducing unit, steam pressure is reducted with a control loop, which includes a pressure sensor and a regulating electric valve and positioner.