Through Licensee agreements with our principals we have certified facilities for the servicing of all types of Valves.




Masoneilan provides factory-certified support for all products through a globally established Masoneilan Authorized Repair Center (MARC®) network. We are the certified MARC® facility in Trinidad and under this program we provide a total range of services required for Control Valves and Actuators which include:

  •  Repair
  •  Service
  •  Test
  •  Certify

To carry out these services our Technicians are Trained and Certified at the Dresser Masoneilan Factory. In addition, to service the needs arising out of changing technology (Analog to Digital), our technicians have been trained and certified to provide services for Masoneilan range of Digital Products.

To support our services and provide accurate and timely data for our customers we use a Computerized Maintenance Management Software (CMMS) Val Keep®.


Dresser Consolidated has built a global network of aftermarket service centers to provide customers with high quality, cost effective pressure relief valve management services. These service centers are known as Green Tag Centers (GTC) and we are the GTC for Caribbean Market.

Established in 1982, the GTC network was the first aftermarket network to certify for high standards of repair and service, and it remains the industry gold standard and the leading service brand.


GTC Technicians are trained extensively prior to certification. After receiving both classroom and hands-on experience, technicians are tested through written and practical application.






Supported by Dresser's commitment to excellence through long term quality assurance procedures, Green Tag Centers consistently ensure customer satisfaction. We offer the complete range of Relief Valve Services to all our customers:

  • Repair
  • Service
  • Test
  • Certify

In addition we have On line Valve Diagnostics capabilities using the Electronic Valve Tester (EVT®)