Services We Offer
Control Valves
Pipeline Valves
Relief Valves
Field Services
Additional Services
Career Opportunities
Great Western Valve is a dynamic private-equity backed company with exciting career opportunities.


Great Western Valve is an industrial valve services company specializing in control, pipeline, and safety relief valve repair and remanufacturing with turnkey machining and repair capabilities. We are API Spec Q1 Registered, National Board of Boiler & Pressure Vessel Inspectors VR Stamp certified, and API ISO 9001:2008 certified and are the only such company in Texas - demonstrating our exceptional workmanship and commitment to quality.

Receiving & Breakdown Shop

  • Valve is received and assigned a work order number
  • Number is stenciled on valve for orientation
  • Before pictures taken from 4 angles
  • Valve as-found condition is documented
  • Valve functionality check is performed and recorded
  • Valve is completely disassembled to component level
  • Metal parts are sandblasted to bare material
  • Parts are inspected by Quality Control (QC) Personnel and the Repair Scope is generated
  • Damaged parts are photographed and e-mailed to customer
  • Upon customer approval, Repair Scope is carried out

Machine Shop

  • Components requiring machining are completed per QC-issued Repair Scope
  • Line boring principles are used in the machining of bodies and bonnets
  • Critical dimensions are brought back to OEM and Industry Standards
  • PMI is performed on components needing repair or replacement to ensure compliance with customer specifications
  • Average Machinist has 20+ Years OEM Experience

Weld Shop

  • Section 9 Certified
  • Weld repairs are accomplished using certified procedures and certified welders
  • Repairs performed on all materials including exotics ; Stellite, Hastalloy, Inconel, Monel, Chrome Moly, etc.
  • Positive Material Identification (PMI) with non-destructive Niton Analyzer
  • Hard facing and cladding
  • Heat treating, stress relieving, and x-ray are also available


  • All parts are inspected by QC prior to assembly
  • All soft goods, elastomers, and bolting are replaced
  • All pipe fittings and stainless tubing are replaced
  • Valves are assembled to OEM or customer specifications


  • All soft goods, elastomers, and bolting are replaced
  • All Instruments receive factory new relays
  • Emerson AMS ValveLink Software
  • Emerson 475 Field Communicators
  • Licensed for HART & Foundation Fieldbus

Air & Hydro Testing

  • Valves are tested to customer requirements and/or Industry Standards including, but not limited to, FCI 70-2-2006, API 598, API 6D, & NBIC Sec VIII
  • Tests are witnessed and approved by QC Department
  • Final test performed after all accessories are assembled
  • After successful testing, the valve is shipped back to the customer along with the repair report detailing the as-found condition and all work performed

Safety Relief Valve Repair

  • National Board of Boiler & Pressure Vessel Certified VR Stamp
    1. ASME Code Section VIII
    2. Special Certification - Machining
    3. Air/Gas and Liquid test media
  • Pre-test
  • Cleaning, Repair, and Machining
  • Set pressure adjustments and verifications
  • Final Set and Testing