Stainless Steel Flanged Butterfly Valve - Worm Gear

1. The Procurement Challenge: Balancing Performance, Cost, and Schedule

The second-phase expansion of a key desalination plant required a series of large-bore, corrosion-resistant isolation valves for its critical RO high-pressure lines. The project's initial technical specification designated a Tier-1 European brand. However, the procurement team faced two significant hurdles after the bidding process:

• Budget Overrun: The brand's quotation was nearly 30% over the allocated budget, largely due to high brand premiums and multi-layered distribution costs.
• Schedule Risk: A standard lead time of 24-28 weeks was unacceptable for the project's tight installation window, creating a risk of costly overall project delays.

The challenge was to source a reliable manufacturer that could meet the stringent technical requirements—especially seawater corrosion resistance—while adhering to the project's budget and timeline.

2. The JRVAL Solution: Engineering Value & Supply Chain Control

JRVAL's proposal was not a simple "low-cost alternative" but a complete, transparent engineering and manufacturing solution based on a deep understanding of the client's core needs.

2.1. Technical Equivalency & Material Superiority

We provided material guarantees that went beyond the minimum standard. The client required Super Duplex S32750 (F53) for the disc and stem, with a PREN value > 40. This is the baseline for acceptance. Leveraging our in-house foundry (our founder is a 20-year casting expert), we guaranteed that our self-produced castings consistently achieve a PREN value of 42.5 or higher. Historical MTRs were provided during the bidding stage to validate this claim.

2.2. The Specific Value of the Worm Gear Operator

For a DN700 valve in PN25 service, a worm gear operator is an engineering necessity. Its value was clearly communicated:

• High Mechanical Advantage & Self-Locking: The gear mechanism provides the required torque for safe operation and is self-locking at any position, preventing disc flutter or accidental closure from hydraulic forces.
• Standardized Integration Interface: The operator featured a standard ISO 5211 mounting platform. The client noted this provided them with significant flexibility and confidence for future automation upgrades without requiring modifications.

2.3. Transparent Quality Assurance & Verification

We clarified our QA process to eliminate ambiguity. Every valve was shipped with a standard documentation package, including MTRs, hydro-test reports (to EN 12266-1), and final QC dimensional inspection reports. Crucially, we informed the client that they could, at their own cost, appoint any internationally recognized third-party inspector (SGS, BV, TUV) for a witnessed Factory Acceptance Test (FAT). This transparent approach gave the client full control over the verification process.

3. Quantified Results: Delivering Measurable Value

Our vertically integrated model—controlling everything from the raw casting in our 81,426 m² facility to final assembly on one of our 11 key CNC centers—directly translated into tangible benefits for the client:

• Cost Savings: The final contract price was 22% lower than the original specified brand, a direct result of eliminating intermediary costs.
• Accelerated Timeline: Our in-house capabilities enabled us to manage the entire production cycle and deliver the valves within 16 weeks, 33% faster than the competitor's timeline.
• Long-Term Reliability: The project has been operational for over 18 months. Feedback from the client confirms that all JRVAL valves have performed flawlessly, with zero maintenance interventions required.