Coolant Valves - Engine Room Consumables and Spares

Coolant valves regulate, isolate, divert, or control cooling-water flow in marine engine-room systems. They are used with main engines, auxiliary engines, generators, compressors, heat exchangers, and central cooling circuits.

ProShipWorks provides end-to-end support to source and supply Coolant Valves for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.

Last updated:

Product Information

Product Name Coolant Valves
Product Category Engine Room Consumables and Spares
Product Reference 1388
Brands / Manufacturers AMOT, Danfoss, Alfa Laval, KITZ
Unit of Measure Piece

Key Features

Key Feature
1.   Manual, thermostatic, pneumatic, or electrically actuated operation
2.   Two-way isolation or three-way mixing and diverting configurations
3.   Suitable for seawater, fresh cooling water, glycol mixtures, or treated coolant
4.   Materials commonly include bronze, stainless steel, cast iron, or coated steel
5.   Available with threaded, flanged, wafer, or grooved connections

Applications of Coolant Valves

Application
1.  Main and auxiliary engine jacket-water cooling systems
2.  Generator, compressor, and turbocharger cooling circuits
3.  Central cooling systems, heat exchangers, and HVAC seawater circuits

Models & Manufacturers

Model Manufacturer
6L Thermostatic Valve AMOT
AVTA Automatic Water Valve Danfoss
Three-Way Temperature Control Valve Alfa Laval

Technical Specifications

Model Specification Value Unit
6L Thermostatic Valve Valve configuration Three-way temperature control —
6L Thermostatic Valve Actuation Self-operated thermostatic element —
AVTA Automatic Water Valve Valve configuration Automatic two-way water valve —
AVTA Automatic Water Valve Temperature control Sensor-controlled proportional regulation —
Marine coolant valve Nominal size Selected according to pipe size and required flow —
Marine coolant valve Pressure rating Manufacturer and valve-material dependent —

Standards, Certifications & Class Approval

Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.

Applicable Standards & Certification Applicable requirements may include ISO 5208 or EN 12266 for pressure and leakage testing, together with applicable piping, material, and pressure-equipment requirements. Certification is model-, material-, size-, and service-specific.
Class Approval Marine installations may require approval or acceptance by DNV, ABS, Lloyd's Register, Bureau Veritas, or ClassNK. Availability of type approval depends on the manufacturer, valve design, pressure rating, materials, and vessel application.

Installation, Maintenance & Safety Information

Installation Notes Confirm flow direction, valve type, temperature element, pressure rating, connection standard, and coolant compatibility before installation. Install strainers where required, provide adequate pipe support, and allow access for adjustment and replacement. Flush the system before commissioning.
Maintenance Tips Inspect for leakage, corrosion, abnormal operating temperature, and actuator or sensing-element malfunction. Exercise manual isolation valves periodically. Clean strainers, verify temperature control, and replace damaged seals or thermostatic elements using manufacturer-approved parts.
Safety Notes Isolate, drain, depressurize, and cool the system before removing a valve. Treat engine coolant and seawater circuits as hot and pressurized. Use approved lifting equipment, correct gaskets, and suitable PPE. Verify the valve is correctly positioned before restarting the engine or pump.

Request a Quote for Coolant Valves

Contact ProShipWorks for marine or industrial product sourcing, quotations and delivery.

  • Vessel name and IMO number
  • ETA / vessel schedule
  • Berth or vessel location
  • Required quantity
  • Preferred delivery window
  • Shipping agent contact details

Why ProShipWorks?

Trusted & Professional Service

Experienced maritime professionals focused on quality, safety and dependable service execution.

24/7 Rapid Response

Fast response for planned and urgent vessel requirements, whenever support is needed.

Unbeatable Prices

Cost-effective marine services with competitive and transparent pricing for vessel requirements.

Port & Anchorage Coverage

Reliable marine service support across ports, anchorages and offshore locations.