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Service and Repair

MERCER VALVE
SERVICE AND REPAIR

The only name-brand company that manufactures relief valves with follow-up services for your future needs.

Contact us about our New or Refurbished Pressure Relief and Flow Control Devices!

national board certified



Our staff is certified in the service and repair of Section XIII Air/Gas and Liquid pressure relief devices. We test, service and repair many brands to ASME Boiler and Pressure Vessel Code standards. Our “VR” and “T/O” services are performed in accordance with standards set by the National Board of Boiler and Pressure Vessel Inspectors, and all of our 6 USA Based MVSR Branches are “VR” & “T/O” Certified. We are also affiliated with NCMS, ISNetworld, Veriforce, PEC Premier and NCCER.

proudly servicing all types of asme and non-asme devices



Mercer Valve Service and Repair (MVSR) provides a comprehensive range of services for ASME and non-ASME pressure relief and flow control devices, regardless of the manufacturer. We offer both in-shop and field services to suit our customers’ needs. Our field tests are performed and documented in compliance with DOT Rules and Regulations, ensuring that your equipment is safe and reliable.

Our repair & services cover a wide range of equipment including but not limited to:

  • Spring Operated Relief Valves
  • Pilot Operated Relief Valves
  • Pressure Relief Valves
  • Butterfly/Gate Valves
  • Control Valves
  • Glycol/Chemical Pumps
  • Pressure Safety Valves
  • Pressure Relief Devices
  • Vent Valves
  • Regulators
  • Pressure Switches
  • Sand Traps
  • Hatch Valves (Thief Hatch)
  • Ball Valves
  • Dump Valves
  • Hammer Unions
  • Flame Boxes/Arrestors
  • Rupture Disks/Pins

We take great care to ensure that all equipment is properly tested, inspected, and serviced to the highest industry standards, using state-of-the-art tools and techniques. Our goal is to provide our customers with reliable equipment that operates safely and efficiently, day in and day out.

in-house



on-site



valve service engine

better data equals better service.



Valve Service Engine (VSE) is a pressure relief and flow control device management system that brings your data to life. All data plugged into VSE undergoes an audit process to help ensure data integrity. You can be assured that we work hard at providing you with the most accurate information possible. The VSE Portal is where it all comes together offering Test Report downloads, spreadsheet downloads, detailed valve information and much more!

training & webinars



north region



If you are located in the northern areas of the USA let one of our MVSR North Region branches help! With a fleet of mobile units our teams are able to travel to wherever your equipment is located. We also offer in-house services, so if you have a valve/device that needs to be tested, “VR” certified, converted or inspected send our way and let us help!

south region



If you are located in the southern areas of the USA let one of our MVSR South Region branches help! With a fleet of mobile units our teams are able to travel to wherever your equipment is located. We also offer in-house services, so if you have a valve/device that needs to be tested, “VR” certified, converted or inspected send our way and let us help!