Valve Services

With thousands of valves located throughout a typical plant, their optimal performance is often critical to safe, efficient operations. Day & Zimmermann can help you meet this challenge through our comprehensive portfolio of valve services. Equipped to service virtually every type of valve, our full-scope capabilities are delivered through an integrated approach encompassing complete valve and operator testing, repair and refurbishment.

Our valve offering ranges from basic services to complex, turnkey projects requiring project management, planning, scheduling, engineering and the provision of technicians and equipment. Our diverse services include:

  • Valve Repair and Repacking
    Our personnel, equipment and mobile facilities are equipped to handle valve disassembly, inspection, in-line and off-line machining, repacking, live-loading and reassembly. 
  • AOV/MOV Repair and Diagnostic Testing
    Our technicians are trained and experienced in all major diagnostic testing procedures and equipment. Our MARC’s (Mobile Actuator Repair Centers) are equipped for the disassembly, inspection, refurbishment and reinstallation of valve actuators. 
  • Safety Relief Valve Testing and Repair
    We provide Pressure Relief Valve testing and repair utilizing our “field only” VR stamp. We deliver our capabilities to the site with mobile testing and repair shops. 
  • Training
    As a leading provider of AOV, safety relief and packing, we have the industry experience and expertise to deliver training for plant employees to ensure they equipped to manage all phases of valve repair and maintenance. Our training classes are based on proven systems and procedures that have been recognized as best practices throughout the power industry. 
  • Mobile and In-Place Machining
    Our 45-ft. Mobile Machine Repair Centers (MMRC’s) are outfitted with a variety of machine tools including lathes, mills, sand blasters, parts washers, welders, hydraulic presses, saws, safety valve test stands, surface grinders and hand tools that can support a team of up to 25 technicians.