Marine Electric Calorifier

DRG-0.2 Marine Electric Calorifier – 0.2 m³ Hot Water Heater for Ships & Offshore Vessels | IMO Certified

Product Overview
The DRG-0.2 Marine Electric Calorifier is a compact yet powerful marine electric water heater designed to provide reliable hot water supply for crew accommodations and service facilities aboard ships and offshore platforms. With a 0.2 m³ capacity and robust construction, this calorifier ensures efficient heating performance while meeting stringent marine safety standards. Featuring automatic temperature control and multiple safety systems, the DRG-0.2 delivers consistent hot water supply for various vessel applications.

Key Features & Benefits
• Compact 0.2 m³ Capacity – Ideal for small to medium-sized vessels with limited space
• Automatic Temperature Control – Maintains precise water temperature between 50°C-65°C
• Dual Safety Protection – Pressure relief valve and float level switch prevent dry heating
• Flexible Control Options – Manual and automatic operation modes
• Marine-Grade Construction – Available in carbon steel or stainless steel with bronze/SS valves
• Global Power Compatibility – 380-440V, 50-60Hz operation
• IMO Certification Available – Complies with international marine standards

Technical Specifications

Parameter	Specification
Model	DRG-0.2
Capacity	0.2 m³
Working Pressure	0.4-0.6 MPa
Design Pressure	0.44-0.66 MPa
Body Material	Carbon Steel or Stainless Steel
Valve Material	Bronze or Stainless Steel
Voltage	380-440V, 50-60Hz
Heating Method	Electric Heating
Temperature Range	50°C – 65°C
Delivery Time	25-60 days

Operating Principle & Control System

Automatic Temperature Management:

Dual WTZK-50-C Temperature Controllers – Precisely regulate water temperature
Auto Heating Activation – Starts heating when temperature drops below 50°C
Auto Shutdown – Stops heating when temperature reaches 65°C
Segmented Heating – Sequential operation for efficient power management

Safety Systems:

Pressure Relief Valve – Automatically opens at 0.42 MPa to prevent overpressure
Float Level Switch – Cuts power to heating elements when water level is low
Dual Protection – Prevents dry firing and overpressure conditions

Control Options:

Manual Mode – Direct control for testing and maintenance
Automatic Mode – Intelligent temperature-based operation
Safety Interlocks – Multiple protection systems ensure safe operation

Connection Interfaces & Piping

Connection Point	Size	Function	Operating Pressure
Cold Water Inlet	DN25	Connects to freshwater pressure tank	0.36-0.38 MPa
Hot Water Outlet	DN25	Supplies heated water to distribution system	–
Water Return Interface	DN25	Connects to hot water return circulation	–
Safety Valve Outlet	ZG1/2″	Pressure relief discharge to bilge	0.42 MPa
Discharge Outlet	3/4″	Complete tank drainage to bilge	–

System Integration:

Fresh Water Supply – Connects directly to vessel’s freshwater pressure system
Hot Water Distribution – Integrates with ship’s hot water piping network
Circulation System – Supports return line connection for continuous heating
Safety Discharge – Proper drainage connections for overpressure protection