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Our Processes

NICO VALVES is more than just a valve manufacturer - we are a fully integrated engineering partner. We are one of the few manufacturers with total in-house control over the entire production process including product design, pattern making, casting, precision machining, assembly, and final pressure testing.

Every valve is manufactured under a stringent 12-step quality control process to guarantee full compliance with major international standards, including ANSI, JIS, and DIN. This comprehensive design and manufacturing capabilities have earned us the trust of world-class valve leaders: NICO VALVES is proud to be the exclusive ODM manufacturing partner for a renowned Japanese valve brand as well as an officially designated production partner for a leading valve company based in Houston, USA.

  1. 1.Drawing Design
  2. 2. Pilot Casting
  3. 3. Raw Material Control
  4. 4. Casting
  5. 5. Heat Treatment
  6. 6. Parts Inspection
  1. 7. Machining
  2. 8. Lapping
  3. 9. Cleaning
  4. 10. Assembly
  5. 11. Pressure Test
  6. 12. Packing & Shipment

  • Drawing Design

  • Drawing Design

  • Pattern Making

  • Pattern Making

  • Pilot Casting

  • Pilot Casting

  • Pilot Casting

  • Raw Material Control

  • Raw Material Control

  • Casting

  • Casting

  • Casting

  • Heat Treatment

  • Parts Inspection

  • Parts Inspection

  • Parts Inspection

  • Machining

  • Machining

  • Machining

  • First Piece Inspection

  • In-Process Inspection

  • Welding Hard Facing

  • Lapping

  • Casting Stock Control

  • Casting Stock Control

  • Parts Stock Control

  • Cleaning

  • Assembly

  • Pressure Test

  • Pressure Test

  • Pressure Test

  • Painting

  • Packing

  • Packing

  • Packing

  • Shipment

  • Shipment

  • Shipment

Key Manufacturing Processes

  • Drawing Design & Pattern Making

    Our design team develops precise valve design in strict accordance with the latest international standards and advanced casting/forging methodologies. From pattern development to exact dimensional verification, every phase is engineered to deliver superior casting and forging quality.

    We offer valves ranging from 1/2" to over 36" in carbon steel, stainless steel, and various special alloys. Products can be produced in accordance with ANSI, JIS, DIN, and other international standards. We help customers to save the significant time and sourcing cost across diverse markets and project requirement.

  • Material Quality Control

    We maintain strict quality control from raw material sourcing to every stage of production, enforcing standardized inspections to eliminate any risk of material mix-ups or defects.

    Every batch of casting material undergoes rigorous chemical composition analysis to verify compliance with international standards and certification requirements. For our clients, this guarantees far more than an approval certification – it means confidence that material-related failure risks are eliminated before production even begins.

  • Casting & Heat Treatment

    True quality assurance extends beyond appearance approval to material properties, chemical composition, and mechanical performance.

    Post-casting, all components undergo controlled heat treatment to refine the metallurgical structure. This critical step ensures that mechanical strength and pressure resistance fully meet the design specifications – guaranteeing long-term durability in high-pressure environments rather relying solely on visual approvals.

  • Component Inspection & First Article Inspection

    Safeguarding volume production through rigorous First Article Inspection.

    Every machining batch begins with a mandatory First Article Inspection to verify dimensional tolerances and inspect machined castings before mass production begins. This proactive safeguard significantly reduces batch-rejection risks and ensures consistent product quality.

    It is precisely this uncompromising inspection protocol that gives us the confidence to supply demanding markets across Europe, Japan, and North America.

  • 100% Factory Pressure Testing

    Resolving Quality Risks in-house before Shipment

    Every single valve undergoes 100% pressure testing prior to dispatch to guarantee its pressure resistance and sealing performance.

    By containing and resolving potential defects strictly within our facility, we protect our clients from post-delivery surprises, preventing costly delays, unexpected filed failure and operational disruptions.

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