Superior Material Composition: Our valves are cast with chemical compositions at the highest end of international standards. For example, our ASTM A351 CF8 stainless steel contains 9% Nickel—the maximum allowable—to ensure superior corrosion resistance and extended service life.
Lug Hole Positional Accuracy: The true position of our threaded lug hole pattern is precisely controlled to an exacting tolerance of ±0.10 mm relative to the valve centerline.
100% Gauge Verification: To validate this precision, every valve's lug holes are 100% inspected with certified go/no-go gauges.
Surface Integrity: Our castings are guaranteed to be free from surface porosity, shrinkage, or unauthorized weld repairs, ensuring maximum material strength and pressure-holding capability.
Design and Manufacture: ASME B16.34; ASME VIII; API 609:AS2129 JISB2220
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 |
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|---|---|
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Type of Connection |
Lug (NPT/ Through Hole Connection) |
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Actuation |
Electric |
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Size |
1 1/2in ~ 48in |
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Pressure |
10bar~20bar |
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Testing Pressure |
256psi |
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Medium |
Water, Oil, Gas, Steam, Corrosive Media, Slurry, etc. |
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Medium Temperature |
-25℃~180℃ |
MATERIAL OF THE VALVE |
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|---|---|
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Body |
CF8/ CF8M/ CF3/ CF3M/ 2205/ 2507/ 1.4529/ 1.4406 |
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Disc |
DI/ CF8/ CF8M/ CF3/ CF3M/ 2205/ 2507/ 1.4529/ HC276/ C95400/ C95800 |
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Stem |
45#/ SS410/ SS416/ SS420/ SS304/ SS316/ SS316L/ 17-4/ 2205/ 2507/ 1.4529/ K500/ CF8/ CF8M/ HC276 |
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Soft Seat |
EPDM/ NBR/ SIL/ FKM/ FPM/ VITON/ PTFE/ HYPALON/ UHMWPE |
Voltage Options: AC 220V, 380V; DC 24V
Frequency: 50Hz / 60Hz
Control Type: On/Off (Quarter-turn)
Modulating Input: 4-20mA / 0-10V DC
Current Draw: Varies by model (e.g., 0.2A ~ 2.5A)
Protection Class: Standard IP67 (NEMA 4/4X)
Optional Protection: IP68 (Submersible)
Housing Material: Die-cast Aluminum Alloy
Coating: Anti-corrosion Powder Coating
Ambient Temp: -20°C to +70°C (-4°F to +158°F)
Manual Override: Handwheel for Emergency Use
Position Indicator: Dome-type Visual Indicator
Limit Switches: 2x Open, 2x Close (Standard)
Torque Protection: Electronic Over-torque Cutoff
Optional Fail-Safe: Battery Backup Module
Our lug valve 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 combine our expertise in stainless steel metallurgy with advanced automation to deliver solutions that thrive in corrosive, hygienic, and high-purity applications. Every valve is a testament to our commitment to quality, from raw material to final assembly.
We start with certified CF8/CF8M stainless steel investment castings. Our foundry process ensures a superior surface finish and dimensional accuracy, forming a flawless foundation for a long-lasting, corrosion-resistant valve.
Our advanced CNC machining centers create perfectly concentric bores and mirror-finish disc edges. This precision minimizes operational torque, eliminates potential contamination points, and guarantees a reliable bubble-tight seal.
An excellent valve requires a perfectly matched actuator. We rigorously test and calibrate each electric actuator to the specific stainless steel valve, ensuring responsive, reliable, and repeatable performance for your automated process.
Our electric actuated stainless steel lug butterfly valves provide precise, automated control in industries where purity, sanitation, and resistance to aggressive media are non-negotiable.
For automated control of product lines, CIP systems, and utility media, our food-grade valves are essential. An electric Ss butterfly valve ensures no contamination and allows for reliable, repeatable process automation in dairies, breweries, and processing plants.
In systems handling purified water (WFI), sterile media, and fine chemicals, purity is paramount. The polished, crevice-free surfaces of our stainless steel butterfly valve prevent bacterial growth and ensure process integrity, with full material traceability.
For automated dosing and transfer of corrosive chemicals, acids, and solvents, our valves offer superior material compatibility. A robust butterfly valve stainless construction provides the long-term reliability needed for safe and efficient plant operations.
In reverse osmosis (RO) skids, brine lines, and chemical dosing systems, resistance to chlorides is key. Our automated cf8m butterfly valve (316 SS) provides excellent protection against pitting and crevice corrosion, ensuring long service life in harsh water environments.
For automated control of bleaching agents, white water, and other corrosive liquors, stainless steel is the material of choice. Our heavy-duty electric lug style butterfly valves are engineered to withstand the chemically aggressive environment of modern paper mills.
In ballast water systems, cooling circuits, and fire mains exposed to seawater, corrosion is a constant threat. An automated butterfly valve ss offers superior resistance to saline environments, reducing maintenance and enhancing vessel safety.
For utility lines carrying sour water, process chemicals, or other corrosive fluids, stainless steel provides an essential layer of safety and reliability. Our electric valves are designed to meet stringent industry standards, including the api 609 butterfly valve design specification.
Automated ultra-pure water (UPW) systems demand components that will not leach contaminants. The high-purity materials and electropolished surfaces of our specialized industrial butterfly valve configurations make them ideal for these critical applications.
Austenitic stainless steel retains its toughness at extremely low temperatures. Our specially configured electric low temperature butterfly valve is a reliable automated solution for handling liquefied natural gas (LNG) and other cryogenic fluids safely.
We enhance the natural resilience of our stainless steel bodies with specialized seat and disc materials for automated control in the most chemically demanding industrial processes.
A Leading Regional Beverage Producer | Food & Beverage
Our client, a leading regional producer of fruit juices and dairy products, relies on frequent Clean-in-Place (CIP) processes to maintain sanitary standards. Their existing 304 Stainless Steel valves were experiencing severe pitting corrosion and premature seal degradation when exposed to cleaning agents containing sodium hypochlorite and citric acid. This resulted in 3-4 unplanned downtime events annually, directly impacting production efficiency.
The Core Challenge: The procurement department was tasked with sourcing a valve solution that offered superior chemical resistance and reliable automation, while also achieving significant cost optimization compared to their incumbent premium European-branded replacement parts. Furthermore, the delivery lead time had to be under 12 weeks to align with a scheduled maintenance window.
After evaluating several suppliers, the client's engineering team selected JRVAL's Electric Stainless Steel (CF8M / 316L) Lug Butterfly Valves. Our proposal was not a simple product replacement, but a comprehensive engineering delivery encompassing material verification, manufacturing process control, and post-sales support.
| Material Integrity | We provided full Material Test Reports (MTR 3.1) and, as a source foundry, conducted PMI verification on every batch of CF8M castings using our in-house spectrometer. This ensured that Chrome, Nickel, and Molybdenum content fully complied with ASTM A351 standards, guaranteeing the material's foundational corrosion resistance. |
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| Sealing Performance | The valves achieved bi-directional, zero-leakage soft sealing to the API 598 Rate A standard. This was realized through a combination of our proprietary seat design (a commercial secret) and precision CNC machining (disc edge surface finish of Ra ≤ 0.8μm), ensuring a tight shut-off even after frequent cycling. |
| Manufacturing & Delivery | Leveraging our 81,426 m² facility with integrated casting capabilities and 11 key CNC machining centers, we controlled the production cycle for the 30 sets of DN100-DN200 valves within 8 weeks. Final delivery was completed in week 10, two weeks ahead of the client's 12-week deadline. |
| Third-Party Verification | We submitted comprehensive internal QC inspection reports, including dimensional checks (using calibrated vernier calipers) and pressure test records. We were transparent that third-party witnessing or reporting by agencies like TÜV or SGS could be arranged at the client's expense, per our standard procedure. After reviewing our internal documentation, the client accepted our reports for this batch. |
| Product Feature & Value | The Lug-style design allowed the valves to be used for dead-end service during downstream pipe maintenance. This greatly simplified maintenance procedures, an advantage the client's previous wafer-style valves did not offer. |
Eighteen months post-installation, we conducted a performance review with the client's maintenance department. The results were tangible and significant:
22%
Valve Procurement Cost Optimization
0
Downtime Events in 18 Months Due to Valve Corrosion
>95%
Reduction in Valve-Related Maintenance Hours
We provided our standard 24-month warranty for this project. During this period, any spare parts, such as seals, failing due to manufacturing defects are supplied free of charge. Because our valves are manufactured in strict accordance with international standards, the client can easily source standard spare parts from the market or from us even after the warranty period. We also commit to providing prompt online technical support for any operational queries.
"JRVAL's solution struck the right balance between cost and performance. The documentation they provided was thorough, and their communication was direct, without any marketing hype. Most importantly, these valves have been operating reliably in our CIP system for 18 months without any signs of leakage or corrosion. Their confidence as a source foundry is clearly reflected in their product quality."— Maintenance Engineer, Leading Regional Beverage Producer
Our commitment to quality is verified by internationally recognized standards, providing the documentation and peace of mind you need for your critical industrial applications.
Engineered for corrosion resistance and purity.
The primary reason is superior corrosion resistance. While Carbon Steel is chosen for high-temperature/pressure applications with non-corrosive media, Stainless Steel is essential when the process fluid is corrosive or when purity is critical. It is the definitive choice for industries like chemical processing, food & beverage, pharmaceuticals, desalination, and wastewater treatment, where preventing contamination and material degradation is paramount.
The key difference is the addition of molybdenum in SS316. This element gives it significantly enhanced resistance to chloride-induced corrosion (e.g., from seawater, brines, and certain acids).
• Use SS304 (CF8) for general corrosive services like freshwater, food products, and atmospheric exposure. It's a cost-effective solution for less aggressive environments.
• Choose SS316 (CF8M) for more demanding applications, including marine, pharmaceutical, and aggressive chemical processing. It is the standard for preventing pitting and crevice corrosion in chloride-rich media.
The key benefit is its suitability for dead-end service. Each threaded lug hole allows the valve to be bolted to one flange while the other side of the pipeline is removed for maintenance. This isolates a section of the system without needing to drain the entire line. This feature is invaluable in industrial plants, refineries, and complex piping networks.
Our quality control extends beyond just PMI testing. Every austenitic stainless steel casting (CF8, CF8M, etc.) undergoes a mandatory solution annealing heat treatment. This process involves heating the casting to over 1050°C (1922°F) followed by rapid quenching. This dissolves harmful chromium carbides, restoring the material to a homogenous state and guaranteeing its maximum specified corrosion resistance and ductility. We provide full traceability with MTRs and heat treatment reports.
Our electric valves support two primary control methods: On/Off (Quarter-turn), operated by simply applying power, and Modulating Control, which uses a standard 4-20mA or 0-10V analog signal for precise positioning. They are available in various standard voltages, including AC 220V, AC 380V, and DC 24V, allowing direct integration with modern PLC, DCS, or Building Automation Systems (BAS).
Each unit is a fully integrated assembly. Key features include a manual override handwheel for emergency operation, electronic over-torque protection to prevent motor damage, and a clear visual position indicator. For critical applications, we offer optional fail-safe modules (battery backup) that automatically drive the valve to a pre-set safe position (open or closed) upon power loss. The standard housing is IP67 rated, with IP68 available for submersible conditions.
As a source factory integrating casting, machining, and assembly, JRVAL's product reliability has been verified by the market for over 20 years.
Compare our products against other brands before you commit. We're confident you'll be satisfied after an in-depth investigation.
We provide a comprehensive 2-year warranty covering non-human damage. Spare parts for the valve body, disc, seat, and gear operator are readily available.
Before delivery, we provide complete documentation, including material test reports, heat treatment reports, and mechanical performance tests.
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Address: DaZhan Industrial Park, Xiaozhan Town, Jinnan District, Tianjin, China
Copyright @ 2025. Tianjin Jiangrui Steel Casting Co., Ltd.
Technical Support: Magic Lamp - Website
