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.
Contact us for additional supported devices.

in-house
Mercer Valve’s exceptional in-house shop service is dedicated to repairing many types and brands of pressure relief valves and flow control devices. Our skilled technicians possess the expertise to service and repair all valve brands, ensuring reliable and safe operation.

on-site
At Mercer Valve, we aim to be your reliable partner for on-site valve services. Our skilled team takes great pride in delivering safe and dependable solutions in the field. We are committed to providing unparalleled on-time service and repair that you can trust.
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
With Service and Repair training provided by our Engineering staff, your technicians will gain an understanding of our product operations and repair procedures so they can test and repair them to a “like new” state for conventional valves, and snap and modulating pilots. For education about new products and to see our safety measures firsthand, see our SafeWatch webinars on LinkedIn or Contact Us to learn more!
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!