Low-Temperature Material Assurance: ASTM A352 LCB/LCC steel ensures impact toughness and mechanical strength at -40°C+, preventing low-temperature brittleness cracks.
Reinforced Valve Body Design: HG/T-compliant structural optimization enhances wall thickness and strength, resisting stress under low temperatures for extended durability.
Flange Precision Customization: Tailored flange adjustments eliminate pipeline dimensional mismatches, ensuring leak-free connections.
Actuator Upgrade Flexibility: ISO 5211-compliant platform supports seamless pneumatic/electric actuator retrofits for system adaptability.
Design and Manufacture: ASME B16.34; ASME VIII; API 609; AWWA
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 |
Wafer |
|
Actuation |
Worm Gear |
|
Size |
1 1/2in ~ 48in (DN40~DN1200) |
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Pressure |
10bar~20bar (1.0mpa~2.0mpa) |
|
Testing Pressure |
256psi |
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Medium |
Water, Oil, Gas, Steam, Corrosive Media, Slurry, etc. |
|
Medium Temperature |
-25~180℃ |
Material of the Valve |
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|---|---|
|
Body |
WCB/ WCC/ LCB/ LCC/ LC1 |
|
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 |
| Coating | Epoxy Resin 200um~250um |
Our worm gear operated carbon steel valves are engineered for applications requiring high torque, reliable shut-off, and precise flow regulation. The self-locking gear mechanism ensures stable disc positioning, making it ideal for large-diameter pipelines and demanding industrial services where manual control is paramount.
We begin with superior strength, utilizing only certified WCB and LCB carbon steel castings from our own foundry. Each batch is validated with material test reports (MTRs) to ensure the integrity required for high-pressure industrial applications.
Our CNC-machined worm gear actuators provide smooth, low-effort operation with a high gear ratio. The self-locking design prevents back-driving and ensures the valve disc remains fixed in any position for reliable throttling.
Every valve body is protected by a 250μm+ fusion-bonded epoxy coating. This shields against external corrosion and mechanical damage, ensuring long-term operational integrity even in harsh outdoor or industrial environments.
Our worm gear carbon steel butterfly valves provide dependable, precision manual control in critical infrastructure and process industries worldwide, where reliable operation is non-negotiable.
In municipal water systems, the worm gear is essential for managing flow in large mains and at pump stations. The reliable sealing and simple installation of a Wafer Type Butterfly Valve make it a primary choice for waterworks engineers.
For cooling water circuits and low-pressure steam lines, our valves provide dependable isolation. When fitted with appropriate seats, they can function as a cost-effective High Temp Butterfly Valve for various utility applications within the plant.
Onboard vessels, our valves are used in ballast water, cooling systems, and bilge lines. The compact design and compliance with international standards make our Din Butterfly Valve ideal for the space-constrained and demanding marine environment.
Steel mills require robust valves for their extensive cooling water systems. The high torque output of a Gear Type Butterfly Valve ensures reliable operation for isolating water flow to furnaces, rolling mills, and processing lines.
For utility lines handling cooling water, nitrogen, or process air, our valves offer safe and reliable isolation. Designed and tested to industry standards, each Api 609 Butterfly Valve ensures compliance and performance in plant operations.
In mineral processing plants, managing large volumes of water and process solutions is key. The durable and tight-sealing capability of a Rubber Seat Butterfly Valve makes it perfect for dewatering circuits and tailings management.
In commercial buildings and district cooling, large pipes require precise balancing. A gear-operated 12 Inch Butterfly Valve allows maintenance staff to accurately throttle chilled water flow, optimizing energy efficiency and comfort.
The pulp and paper process involves managing large flows of water, white liquor, and pulp stock. A robust Worm Gear Operated Butterfly Valve provides the necessary torque and reliability for controlling these challenging media throughout the mill.
In utility areas of food processing plants, our valves are used for incoming water, glycol loops, and wastewater. A certified Epdm Seat Butterfly Valve ensures compliance and provides reliable service for non-product contact applications.
Our worm gear valves are the solution for environments where controlled manual operation is essential for safety, process efficiency, and long-term reliability.
For high-pressure lines or viscous media, the gear mechanism multiplies input force, ensuring a tight seal with minimal effort. This makes the worm gear butterfly valve the standard for reliable manual shut-off in tough conditions.
The slow, controlled movement and position indicator allow for precise flow regulation. As a leading wafer butterfly valve supplier, we ensure our gearboxes provide fine control for system balancing and process tuning.
In pipes above 12 inches (DN300), hydrodynamic forces make lever operation impractical. Our gear operators are standard issue for any large diameter butterfly valve, ensuring safe and manageable operation.
The self-locking nature of the worm gear prevents vibration from altering the disc position. This ensures that the set point of an ASME butterfly valve remains constant in environments with pumps or heavy machinery.
For standby or emergency isolation lines, our valves remain ready for service. We can equip them as a manual butterfly valve with limit switch to provide open/closed status feedback to a central control room.
A handwheel requires far less clearance than a long lever. Understanding various butterfly valve handle types is key; the gear operator is the perfect solution for tight pipe galleries and mechanical rooms.
Our carbon steel body provides a strong, economical foundation. By customizing the internal disc and seat materials, we configure our worm gear valves to handle a variety of corrosive media effectively.
For treated or untreated industrial water, a standard EPDM seat is effective. Our butterfly valve dn100 pn16 is a workhorse in this service, offering excellent performance and longevity at an economical price point.
To combat chloride corrosion, we pair the epoxy-coated body with a Duplex stainless steel or aluminum bronze disc. A nylon coated disc butterfly valve offers an additional layer of protection, extending service life in marine applications.
For a wide range of chemicals, upgrading to a specialized seat is crucial. A ptfe seat butterfly valve provides superior chemical resistance, protecting the valve internals from attack and ensuring a reliable seal.
When handling media with suspended solids, a resilient seat is key. We recommend a natural rubber or abrasion-resistant EPDM seat for any butterfly valve for slurry application to prevent wear and maintain sealing performance.
The external valve body and gearbox are protected by a thick fusion-bonded epoxy coating that meets international standards like the en 593 butterfly valve specification, preventing atmospheric corrosion in coastal or humid plant environments.
This highly pure water can be aggressive. We specify a polished stainless steel disc to prevent leaching and contamination. As a quality-focused china wafer type butterfly valve manufacturer, we ensure material compatibility for high-purity systems.
Ensuring Manual Isolation Reliability in a Municipal Pump Station Upgrade
Client: A leading system integrator in Malaysia specializing in automated water management solutions.
Project: Supply of 80 large-diameter manual isolation valves for critical pump stations in a municipal water network upgrade.
Product: DN350 - DN600 Gear Operated Carbon Steel Wafer Butterfly Valves (WCB Body, SS316 Disc, EPDM Seat).
The integrator's primary challenge was sourcing large-diameter manual valves that could guarantee reliable isolation under high head pressure. On a previous project, gear-operated valves from another supplier had failed during commissioning, exhibiting issues like gearbox seizure and stem-to-gearbox connection failure. This created significant operational risks and project delays. The client needed a supplier who could provide a fully integrated and factory-tested valve and gearbox assembly, while still adhering to a project budget that was 25% lower than quotes from major European brands.
JRVAL was chosen for our ability to control the entire manufacturing process, from casting the valve body to assembling and testing the final gear-operated unit. Our solution focused on mechanical integrity and verifiable performance.
As a foundry with 20+ years of casting experience, we provided full material traceability. Each valve batch was supplied with an EN 10204 3.1 Material Test Certificate (MTC), detailing chemical composition and mechanical properties. Our WCB casting chemistry was consistently in the upper quartile of the ASTM A216 standard, ensuring superior structural integrity for high-pressure applications.
We treated the valve and gearbox as a single engineered system. Our CNC centers machined the valve stem's drive end and the gearbox's female drive with a tight tolerance of ±0.1mm, eliminating the excessive "play" that leads to shear stress and connection failure under high torque. Each assembled valve underwent a 5-cycle operational torque test at our facility, with results documented to verify smooth operation well below the maximum allowable handwheel effort.
Our vertical integration from casting to final assembly allowed us to offer a price point that resulted in a 22% cost saving on the valve procurement budget compared to the initial European quotes. Leveraging our 81,426 m² facility, we organized production to deliver the full 80-unit order in 8 weeks, comfortably meeting the project's 10-week installation deadline.
Our valves feature a heavier body design, exceeding standard wall thickness requirements by an average of 10%, providing greater rigidity. The aesthetic finish, including an inlaid stainless steel nameplate, reflected the high-quality standard expected by the end user. We backed our product with a 24-month warranty covering the entire valve and gearbox assembly, and provided online technical support.
Our commitment to quality is verified by internationally recognized standards. We provide the documentation to prove it.
Ready for your high-torque application?
We treat the valve and gearbox as a single engineered system, not just assembled parts. Our process ensures maximum reliability through:
A gear operator becomes essential when the hydrodynamic forces on the valve disc create an operating torque too high for a standard lever. This typically occurs in:
As a foundry-direct manufacturer, we control quality from the molten metal. Our competitive advantage lies in:
Yes. Our wafer butterfly valves feature a universal body design. The body dimensions and alignment holes are precision-machined to fit perfectly between a wide range of flange standards, including ANSI B16.5 Class 150, DIN PN10/PN16, and JIS 10K/16K, ensuring a reliable seal in global projects.
We stand behind our integrated products with a comprehensive 24-month warranty covering defects in materials and workmanship for both the valve and the factory-fitted gearbox. Because our valves are built to international standards, consumable parts like seats are easily interchangeable. Our technical team is available online for prompt troubleshooting and support.
As the source manufacturer, we oversee the entire process from casting to final testing, ensuring superior material integrity and full traceability.
Our 11 CNC centers ensure a precise valve-to-gearbox connection, eliminating mechanical stress and guaranteeing smooth, reliable manual operation.
Every shipment is backed by a full documentation package—including MTR and factory test reports—providing the verifiable proof of quality you need.
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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
