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.
Premium raw steel finish with corrosion-resistant coating; deep-cast permanent markings for full traceability (material, pressure, heat number).
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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|---|---|
|
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 |
|
Testing Pressure |
256psi |
|
Medium |
Water, Oil, Gas, Steam, Corrosive Media, Slurry, etc. |
|
Medium Temperature |
-25℃~180℃ |
MATERIAL OF THE VALVE |
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|---|---|
|
Body |
GGG40/ GGG50 |
|
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 |
|
Soft Seat |
EPDM/ NBR/ SIL/ FKM/ FPM/ VITON/ PTFE/ HYPALON/ UHMWPE |
|
Coating |
Epoxy Resin 200um ~ 250um |
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
We merge our award-winning valve design with advanced electric actuators to deliver a complete, intelligent automation solution. Each unit is engineered for precision, unparalleled reliability, and seamless integration into modern control systems.
Precision multi-national flange standards compatibility; strict thread hole control via go/no-go gauge inspection for reliable, leak-free end-of-line service and simplified installation.
Space-optimized compact design (award-winning): minimizes valve body profile while exceeding structural strength standards for tight spaces, ideal for OEM skid integration and complex piping.
Premium raw steel finish with corrosion-resistant coating; deep-cast permanent markings for full traceability (material, pressure, heat number), ensuring compliance and quality assurance for life.
Our electric actuated ductile iron lug valves provide the high-precision modulation, reliability, and data integration required for the most advanced industrial and commercial applications.
For modern building management, our electric valve is the perfect butterfly valve for chilled water system loops, providing precise temperature control and integrating seamlessly with BAS for optimal energy efficiency.
In automated treatment plants, our modulating electric valve, engineered to the same robustness as an awwa butterfly valve, allows for precise chemical dosing and filter flow control, optimizing treatment processes and reducing waste.
The fine-tuned modulating capability of our electric actuator ensures superior flow control with butterfly valve operation on pulp stock, white water, and chemical additive lines, improving consistency and product quality.
For critical cooling water systems and intake lines, a reliable electric large diameter butterfly valve provides dependable isolation and control, with diagnostic feedback to the central control room for predictive maintenance.
The self-contained electric actuator makes our butterfly valve used in ship applications ideal for ballast, bilge, and cooling systems, where compressed air is unavailable and reliable remote operation is essential.
In automated dewatering pump stations, a robust electric ductile iron butterfly valve provides reliable, remotely operated control over water discharge, enhancing operational efficiency and safety in harsh environments.
Our electric fully lugged butterfly valve is mission-critical for liquid cooling loops in data centers, offering the precise modulation and fail-in-place reliability needed to maintain optimal server temperatures and prevent costly downtime.
The quintessential intelligent industrial butterfly valve for modern factories. Use it on process water, thermal oil, and utility lines for precise, data-driven control integrated with your plant-wide SCADA or DCS system.
While not for primary hydrocarbons, our electric valve excels in utility roles within the butterfly valve oil and gas industry, providing automated control of firewater mains, service water, and terminal utilities with simple, reliable wiring.
We pair our robust ductile iron body and intelligent electric actuator with a specialized selection of wetted parts (disc & seat) to provide precise, automated control in chemically aggressive environments.
For a global cloud services provider, data center cooling is mission-critical. A single degree of temperature deviation can impact server performance, while an outage is catastrophic. They required a technologically advanced, ultra-reliable electric modulating valve for their chilled water cooling loops.
The Client: A Tier-IV Hyperscale Data Center Operator
The client was constructing a new 200-megawatt facility. The Head of Mechanical Engineering, Ms. Chen, was responsible for the entire liquid cooling infrastructure. "Our tolerance for failure is zero," she stated. "The valves controlling chilled water to our Computer Room Air Handler (CRAH) units must be precise, energy-efficient, and provide constant diagnostic feedback to our BMS. We needed more than a valve; we needed an engineered solution with guaranteed performance and documented quality at every stage."
For the hundreds of 8-inch (DN200) CRAH feed lines, they needed a partner who understood the granular details of valve manufacturing and intelligent automation.
Ensuring millisecond response and predictive failure analysis.
The challenge was multi-faceted: 1. **Precision:** The valves needed to modulate continuously with less than 1% signal deviation to maintain stable air temperatures. 2. **Longevity:** The valves would perform millions of micro-adjustments over their lifespan; every component had to be designed for high-cycle endurance. 3. **Data:** The actuator had to report its health, torque profile, and cycle count in real-time to the Building Management System for predictive maintenance.
We proposed a complete solution centered on our **Electric Actuated GGG40 Ductile Iron Lug Butterfly Valve**, but with a series of client-specified manufacturing and technology enhancements.
We initiated the process with GGG40 (EN-GJS-400-15) ductile iron, but with enhanced specifications. The raw material charge was selected for high purity, with **Sulphur (S) content maintained below 0.015% and Phosphorus (P) below 0.05%**. Post-inoculation, we performed metallographic analysis on a test coupon from each batch, providing reports confirming a **ferritic matrix exceeding 95% with Type I & II nodularity**, ensuring maximum ductility and fatigue resistance against water hammer.
Understanding the demands of continuous modulation, we refined our machining process. The **ISO 5211 mounting flange was machined to a flatness of 0.04mm**, and its **perpendicularity to the stem bore was held within 0.02mm**. This extreme precision virtually eliminates eccentric loading on the actuator output shaft, ensuring smooth torque transmission and dramatically extending the life of the actuator's gearbox.
Instead of a standard disc, we employed a **CFD-optimized, thin-profile disc** cast from CF8M stainless steel. The disc edge was then machined and polished to a **mirror finish (surface roughness Ra < 0.2μm)**. This design reduced hydrodynamic torque by 15% and minimized friction against the EPDM seat. The lower torque requirement allowed for a smaller, more energy-efficient actuator and significantly reduced seat wear over millions of cycles.
We selected a **smart electric actuator featuring a high-efficiency Brushless DC (BLDC) motor** for superior lifespan and precise speed control. The unit included an integrated digital positioner for 4-20mA modulating control and a **non-intrusive commissioning interface via Bluetooth**, allowing technicians to set parameters safely without opening the IP68-rated housing. Internal torque sensors were set to 120% of the measured seating torque, and the actuator was programmed to send a "high torque warning" to the BMS if this value was ever exceeded, enabling predictive maintenance before failure.
Our commitment to quality is verified by internationally recognized standards, providing the documentation and peace of mind you need for your critical applications.
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The primary reason is safety and durability. Ductile Iron (DI) possesses superior tensile strength and ductility, allowing it to bend and deform under stress rather than shattering. This makes it highly resistant to brittle fracture from system pressures, ground settlement, or water hammer—a critical advantage in water supply, fire protection, and buried applications.
Both are excellent ductile iron grades. GGG40 (EN-GJS-400-15) is the standard, offering good strength and high elongation (toughness). GGG50 (EN-GJS-500-7) provides significantly higher tensile strength with slightly less elongation. We recommend GGG50 for higher pressure applications (e.g., PN25) or systems with greater mechanical stress, while GGG40 is a robust and reliable choice for most PN10/16 applications.
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 and complex piping networks.
Our standard protection is a high-performance Fusion Bonded Epoxy (FBE) coating, typically applied at a thickness of 250 microns. The valve body is heated and the epoxy powder is electrostatically applied, creating a durable, holiday-free barrier that provides excellent resistance to water, chemicals, and abrasion. For seawater or highly corrosive media, we offer specialized disc materials like Duplex Stainless Steel or Bronze.
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
