Specialized standards for specialized supply: Strict Standards separation ensures dimensional compatibility, eliminating misalignment risks.
Sealing Integrity: Precision machining under single-standard protocols prevents leakage from mismatched sealing surfaces.
Material Assurance: 100% stainless steel with third-party certifications eliminates counterfeit risks.
Traceable Craftsmanship: ISO9001 casting with permanent markings enables lifetime quality tracking.
Full-process Reliability: Reinforced components exceed standard product performance in strength/sealing/operation.
Precision-Matched Flanges:Flanges customized from pipeline measurements for leak-free sealing.Thickness reinforced per standards (e.g., HG/T).
Design and Manufacture: ASME B16.34; ASME VIII; API 609
Leakage Class: API 598 (Bi-directional Zero Leakage)
Side Flange Standards: ANSI 125LB/ 150LB; ASME; AS-D/E; BS; DIN; EN PN6/ PN10/ PN16; GB; GOST; HG/T; JIS 5K/ 10K
Top Flange (Actuator Mounting) : ISO 5211; GB 90°
Face-to-Face Dimension: ISO 5752; MSS SP-68; ASME B16.10; EN 558-1; API 609
Testing Standards: API 598; EN 12266-1; ISO 5208; BS 6755-1
Certifications: ISO 9001; CE; BV; API 609; API 598; EAC; SIL3;
Technical description
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Q&A
Specification of the Valve |
|
---|---|
Type of Connection |
Flange |
Actuation |
Round/Square Head |
Size |
1 1/2in ~ 48in (DN40~DN1200) |
Pressure |
10bar~20bar (1.0mpa~2.0mpa) |
Testing Pressure |
256psi |
Medium |
Water, Oil, Gas, Steam, Corrosive Media, Slurry, etc. |
Medium Temperature | -25℃~180℃ |
Material of the Valve |
|
---|---|
Body |
CF8/ CF8M/ CF3/ CF3M/ 2205/ 2507/ 1.4529/ 1.4406 |
Disc | DI/ CF8/ CF8M/ CF3/ CF3M/ 2205/ 2507/ 1.4529/ HC276/ C95400/ C95800 |
Stem | 45#/ SS410/ SS416/ SS420/ SS304/ SS316/ SS316L/ 17-4/ 2205/ 2507/ 1.4529/ K500/ CF8/ CF8M/ HC276 |
Soft Seat |
EPDM/ NBR/ SIL/ FKM/ FPM/ VITON/ PTFE/ HYPALON/ UHMWPE |
Our buttwefly valve stainless bodies are produced from a high-density casting process. This ensures a solid, non-porous structure, completely free from sand holes and other casting defects. The result is superior strength and maximum durability.
Learn More About Our ProcessWe specialize in stainless steel investment casting, ensuring superior material purity and integrity. Our automation-ready valves provide unmatched performance for industries where cleanliness and corrosion resistance are non-negotiable.
We guarantee true-to-spec material (CF8/CF8M/Duplex) through rigorous PMI testing on all raw materials, ensuring every valve body offers maximum corrosion resistance and structural integrity.
Our CNC centers machine ISO 5211 top flanges and sealing surfaces to tight tolerances, essential for perfect actuator alignment, bubble-tight shutoff, and preventing contamination in sensitive processes.
Our bare stem stainless steel designs are field-proven in chemical, marine, and food-grade applications, integrating flawlessly with actuators for reliable, long-life performance where carbon steel cannot survive.
Our bare stem stainless steel valves are the definitive choice for automation in industries demanding purity, corrosion resistance, and long-term reliability. Explore their role in these specialized fields.
Ideal for automated CIP (Clean-in-Place) systems, product transfer, and utility lines. The hygienic design of our stainless steel flanged butterfly valve ensures no product contamination and withstands aggressive cleaning agents.
Used in purified water (WFI) loops, fermentation, and chemical synthesis where preventing microbial growth and material leaching is critical. The high-purity finish of our butterfly valve flange type meets stringent industry standards.
A necessity for handling corrosive acids, alkalis, and solvents. The CF8M/316 stainless steel body and secure butterfly valve double flange design provide a safe, leak-free solution for automated chemical dosing and transfer.
Essential for seawater cooling, ballast systems, and fire mains where saltwater corrosion would destroy carbon steel. The robust flange end butterfly valve in Duplex or Super Duplex offers superior resistance to chloride-induced corrosion.
Perfect for pre-treatment, brine, and permeate lines in reverse osmosis (RO) facilities. Our bare stem double flange valve is ready for automation and built from materials designed to withstand highly saline environments.
Used in ozone and UV disinfection systems where standard materials degrade. As a leading supplier, our wholesale flange butterfly valve with the correct seat material ensures longevity and reliable automated control in municipal plants.
For cryogenic utility applications, our stainless steel valves maintain ductility and strength at extremely low temperatures. The secure butterfly double flange connection is critical for safety in these volatile environments.
In the production of lotions, creams, and perfumes, non-reactive surfaces are vital. As a specialized butterfly valve flange supplier, we provide valves that ensure product purity and are easily integrated into automated batching systems.
Specifically for bleaching circuits using chlorine dioxide and other corrosive chemicals. The superior material of a china flange butterfly valve made from 2507 or 1.4529 steel is essential for resisting aggressive chemical attack.
How a leading EPC firm for critical infrastructure projects eliminated budget overruns and timeline risks by switching from brand-name suppliers to a source manufacturer focused on verifiable quality.
A major EPC (Engineering, Procurement, and Construction) firm specializing in coastal desalination and chemical plants faced a recurring problem. They were forced to choose between:
1) Paying a 30-40% "brand premium" for valves from established European or American manufacturers, which strained project budgets.
2) Sourcing from low-cost factories, which often resulted in "ghost specification" products—valves with falsified material reports (e.g., standard 316 instead of the required Duplex F53) and inconsistent machining that led to on-site installation issues and premature seal failures.
For their project-critical systems, a single valve failure meant costly shutdowns, contractual penalties, and immense reputational damage. The Total Cost of Ownership (TCO) from the "cheaper" valves was becoming unsustainable. They needed a partner who could deliver the quality of a major brand without the associated price tag, and whose quality claims were backed by undeniable proof, not just a logo.
A new project required a large batch of DN600 Duplex steel butterfly valves with specific face-to-face dimensions to fit existing pipework, a requirement that most of their previous suppliers were unable or unwilling to accommodate without excessive lead times and costs. This customization roadblock threatened the entire project timeline.
We engaged with the client not as a supplier, but as a transparent manufacturing partner. For their challenging DN600 Duplex valve order, we didn't just promise quality; we delivered proof at every stage:
The client received valves that met the material and performance specifications of the top-tier brands, at a source-direct price point that brought their project back under budget. The seamless installation and proven performance eliminated their risk of failure. We have since become their designated manufacturer for all non-standard and high-specification valve requirements, leveraging our flexible, high-capacity production capabilities to meet their project timelines, every time. They no longer pay for a brand name; they invest in guaranteed performance.
"We used to say, 'You get what you pay for.' With JRVAL, we get more. We get the verifiable material science and build quality of a major brand without the inflated cost. Their documentation package is now our internal standard for what true quality assurance looks like. They don't just sell valves; they sell certainty."
Our commitment to quality is verified by internationally recognized standards. We provide the documentation to prove it.
Ready for automation in corrosive or hygienic environments?
Yes, this is a core strength. Every bare stem valve features a top flange that is precision-machined to strictly adhere to ISO 5211 standards. This guarantees seamless compatibility and alignment with any compliant electric or pneumatic actuator for reliable, trouble-free automation.
We offer verifiable material integrity, not just promises. For critical applications, we go beyond standard MTRs. We provide 100% PMI (Positive Material Identification) testing on raw materials to guarantee the specified grade (e.g., CF8M, Duplex steel with PREN > 40). This eliminates the risk of using counterfeit materials and ensures maximum corrosion resistance for your application.
Yes, we are built for scale. As a source manufacturer located in China's valve industrial heartland, we have immense production flexibility. For large or urgent projects, we leverage our coordinated regional supply chain under our direct quality control to meet any deadline without compromising quality.
Our concentric flanged valves come with a comprehensive 2-year warranty against manufacturing defects. Because all components (seats, seals, bushings) are machined to universal standards, sourcing spare parts is simple and cost-effective, ensuring easy long-term maintenance for your automated systems.
Absolutely. This is a common problem we solve. We custom-machine valve flanges to your exact specifications (e.g., ANSI B16.5, DIN EN 1092-1, JIS B2220). This ensures a precise, dimensionally accurate, and leak-proof fit for each specific connection in your pipeline, eliminating risks of misalignment.
Qualify us as your new manufacturing partner. We offer free samples for you to conduct in-house testing and directly compare our machining precision, material quality, and build against any competitor.
We stand by our craftsmanship with a 2-year warranty. Because all parts are made to international standards, long-term maintenance is simplified and spare parts are readily available globally.
Go beyond a simple certificate. Every shipment can be backed by a full quality dossier, including MTRs, pressure test reports, and coating inspection reports for complete traceability and peace of mind.