Heavy-Body™ Stainless Steel Wafer Type Butterfly Valve - Worm Gear

10bar~20bar (1.0mpa~2.0mpa)

Product Advantages

icon Premium Materials: MTC certificates + PMI testing ensure material authenticity and compliance.

icon Thick-Wall Body: Meets chemical industry standards (HG/T), resists corrosion/stress.

icon Clog-Resistant Structure: Smooth flow path minimizes residue.

icon Flexible Integration: Customizable flanges & ISO 5211 actuator interfaces for easy retrofitting/upgrades.

Standards and Certifications

Design and Manufacture: GB/T 12238-1989; GOST 12815-1980; GOST 5263-1975

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	Wafer
Actuation	Worm Gear
Size	1 1/2in ~ 24in (DN40~DN600)
Pressure	10bar~20bar (1.0mpa~2.0mpa)
Testing Pressure	256psi
Medium	Water/Oil/Air
Medium Temperature	-25~180℃

Material of the Valve

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/ SI/ FKM/ FPM/ VITON/ PTFE/ HYPALON/ UHMWPE
Coating	Epoxy Resin 200um ~ 250um

ENGINEERED FOR INDUSTRIAL DURABILITY

We manage the entire production chain, from sourcing high-tensile WCB carbon steel to precision machining and advanced epoxy coating. This ensures every valve delivers exceptional strength, reliability, and performance in demanding industrial applications.

HIGH-TENSILE CARBON STEEL

We utilize certified WCB/A216 carbon steel, renowned for its superior strength and structural integrity, ensuring reliable performance under high pressure and mechanical stress.

ROBUST & PRECISION ENGINEERING

Our CNC machining centers guarantee exact dimensions for all components, from the valve body to the gear mechanism, ensuring a perfect fit for tight sealing and smooth operation.

RELIABLE WORM GEAR OPERATION

The high-torque worm gear actuator provides precise, slow-closing control to prevent water hammer and is self-locking to resist line pressure changes, ensuring operational safety and stability.

Key Application Industries

Our carbon steel butterfly valves are the workhorse of heavy industry. Below are key sectors where their strength and reliability are essential, though their versatility extends to many more unlisted applications.

HVAC & Climate Control

Ideal for chilled water, hot water, and condenser water lines in large commercial buildings, our **hvac butterfly valve** provides dependable isolation and balancing for efficient climate management.

Municipal Water Treatment & Distribution

As a leading **wafer butterfly valve supplier**, we provide robust solutions for municipal water systems, from treatment plant processing to distribution networks, where durability and low maintenance are critical.

Fire Protection Systems

In life-safety applications, reliability is non-negotiable. Our **butterfly valve with tamper switch** ensures system integrity by providing an immediate alert if the valve's status changes, crucial for sprinkler and fire suppression lines.

Pulp & Paper Processing

Handling fibrous slurries and process water requires a tough valve. Our **rubber lined butterfly valve** offers excellent abrasion resistance, preventing de-watering and ensuring smooth flow control in demanding paper mill operations.

Mining & Mineral Processing

In abrasive slurry and dewatering applications, the high-strength body of our **wcb butterfly valve** withstands the harsh conditions of mining operations, offering a cost-effective and durable solution for flow control.

Construction & Utilities

For temporary water lines on construction sites or permanent utility installations, a standard **6 wafer butterfly valve** provides a compact, reliable, and easy-to-install solution for managing water flow efficiently.

General Industrial Services

Our **pn16 butterfly valve** is a versatile choice for a wide range of general industrial applications, including process cooling water, air services, and chemical transfer, meeting common European pressure standards.

Agriculture & Irrigation

In large-scale irrigation systems, a **manual wafer butterfly valve dn150** offers farmers a simple and robust method for controlling water flow to different sections of their fields, ensuring durability season after season.

Marine & Shipbuilding

For ballast, bilge, and cooling water systems on board ships, our heavy-duty **epoxy coated butterfly valves** provide a critical layer of protection against corrosion in humid, salt-laden air environments.

Engineered for Demanding Environments

Our carbon steel valves are built to withstand the physical demands of industrial processes. From high-pressure lines to abrasive slurries, we provide robust solutions that ensure operational uptime and safety.

High-Pressure Systems

Engineered with a reinforced carbon steel body and a high-strength stem, our **class 150 butterfly valve** is designed to maintain seal integrity and structural stability in applications up to 150 PSI, meeting rigorous ANSI standards.

Vibration & Water Hammer

The inherent self-locking nature of a **worm gear operated butterfly valve** prevents disc flutter and creep caused by pipeline vibrations or pressure surges, ensuring the valve remains in its set position without fail.

Abrasive Media & Slurries

We offer specialized solutions for challenging media. A heavy-duty **butterfly valve for slurry application** can be configured with hardened disc edges and durable rubber liners to withstand erosion and extend service life significantly.

Large Diameter Pipelines

Operating large valves requires significant torque. Our gear-operated **large diameter butterfly valve** makes manual operation manageable and safe, providing the necessary mechanical advantage for smooth control in municipal and industrial mains.

Frequent Operation & Throttling

For applications requiring frequent adjustments, the **butterfly valve worm gear** mechanism is built for high-cycle durability. It allows for precise and repeatable positioning, making it ideal for flow regulation and throttling services.

Outdoor & Exposed Installations

As a leading **wafer type butterfly valve supplier**, we ensure our products feature heavy-duty epoxy coatings and sealed gearboxes. This protects against UV degradation, moisture ingress, and atmospheric corrosion for long life outdoors.

Resilience Against Corrosion

While carbon steel provides strength, our advanced liners and coatings provide the chemical defense. We expertly bond high-performance elastomers and polymers to the valve body, creating an impermeable barrier against corrosive media.

Industrial Wastewater

For treating process water with moderate chemical content and solids, our **nbr lined butterfly valve** provides an excellent barrier, protecting the carbon steel body while offering superior resistance to oils and fats.

Brackish Water & Cooling Towers

The elevated salt and chemical content in cooling tower or brackish water systems requires robust protection. A **wcb wafer butterfly valve** with a thick, pinhole-free epoxy coating provides a durable and cost-effective defense against corrosion.

Mild Chemical Solutions

For handling a range of caustics, acids, and solvents, a **ptfe seat butterfly valve** provides a nearly universal chemical resistance, fully isolating the carbon steel body and stem from the process fluid for long-term reliability.

Oily Water & Hydrocarbons

Standard elastomers can swell and degrade in contact with oils. The **butterfly valve nbr seat** is specifically formulated to resist petroleum-based fluids, making it the ideal choice for oil-water separators, fuel lines, and lubrication systems.

Chlorinated & Potable Water

Our NSF-61 certified **epdm seat butterfly valve** is perfect for potable water applications, offering excellent resistance to chlorine, chloramines, and ozone without leaching harmful substances, ensuring public water safety.

Seawater Intake & Ballast

For non-critical marine applications, a carbon steel **china wafer butterfly valve** with a thick marine-grade epoxy coating and a resilient rubber liner offers a cost-effective alternative to expensive alloys for controlling seawater flow.

Industrial HVAC System Upgrade: A Case Study

How a North American engineering contractor optimized project costs and mitigated operational risks by selecting JRVAL's worm gear operated carbon steel butterfly valves over premium-priced specified brands.

Client: A leading mechanical engineering contractor.
Project: HVAC system modernization for a large-scale industrial manufacturing facility, involving the replacement of over 200 valves ranging from DN150 to DN600.
Product: JRVAL Worm Gear Operated Wafer Butterfly Valve, Carbon Steel Body (ASTM A216 WCB), EPDM Seat.

The Challenge: Balancing Budget, Performance, and Risk

The contractor faced a classic procurement dilemma. The project's original specification called for high-cost European valve brands, which threatened to push the project over budget by approximately 20%. Sourcing from low-cost, unverified suppliers was deemed an unacceptable risk due to potential material inconsistencies, poor performance, and the high cost of post-installation failure in a critical system. They required a supplier that could provide a technically compliant, reliable valve solution while delivering significant cost savings.

Key Performance Indicators (KPIs) for Supplier Selection:

Achieve a minimum of 15% cost reduction on the valve procurement package.
Ensure material traceability and quality verification (MTRs, dimensional QC).
Guarantee bi-directional zero-leakage performance as per API 598 Rate A.
Provide a solution to mitigate water hammer in large-diameter lines.
Secure a firm delivery schedule to align with the project's phased installation plan.

The Solution: A Data-Driven Approach to Value Engineering

JRVAL was engaged to provide a technically equivalent and commercially advantageous alternative. Our approach focused on transparency and verifiable data to build client confidence.

✔ Verifiable Material Integrity Through In-House Casting

We leveraged our core strength: an in-house foundry managed by a 20-year casting expert. We provided full material traceability reports (MTRs) for our ASTM A216 WCB body castings, demonstrating compliance. We were transparent that our standard QC includes dimensional and pressure testing reports, and openly facilitated the client's option to hire a third-party inspector (TPI) at their cost for additional verification, which they ultimately deemed unnecessary due to our comprehensive documentation.

✔ Enhanced System Safety with Worm Gear Actuators

For the larger DN300-DN600 valves, the worm gear operator was a key feature. Its high gear ratio provided slow, controlled closing, effectively mitigating the risk of water hammer in long pipe runs—a major concern for the client. The self-locking nature of the gearbox also prevented disc flutter from system vibrations, ensuring the valve held its set position and improving operational safety.

✔ Guaranteed Performance and Long-Term Reliability

Our valves feature a proprietary seat design that ensures bi-directional, bubble-tight shutoff, tested to 1.1 times the rated pressure. We submitted our internal test reports confirming zero leakage (API 598 Rate A). Furthermore, we backed our product's durability with a 24-month warranty, including free spare part replacement, and clarified that post-warranty, standard-sized EPDM seats are readily available, ensuring low Total Cost of Ownership (TCO).

The Results: Quantifiable Success

The project was completed successfully, with the JRVAL valves meeting or exceeding all performance criteria. The valves have now been in continuous operation for over 18 months.

Cost Optimization: Achieved a total saving of 18% on the valve procurement budget compared to the initial quotes for the specified European brands.
Performance Reliability: Zero failures or leaks reported across all 200+ valves since commissioning, maintaining system integrity and preventing costly downtime.
Schedule Adherence: All valve shipments were delivered on or ahead of the phased schedule, eliminating any risk to the project timeline.
Operational Efficiency: Facility operators reported positive feedback on the smooth, precise control offered by the worm gear actuators, especially during system balancing.

Supplier & Production Snapshot

Facility Size: 81,426 m²
Core Competency: In-house casting & manufacturing
Key Equipment: 11 primary CNC machining centers
Warranty: 24 months from commissioning
Support: Direct online technical support

“We were initially hesitant to deviate from the specified premium brands, but JRVAL's transparency regarding their in-house casting process and comprehensive QC documentation gave us the confidence to proceed. The worm gear actuators perform exactly as needed to prevent hydraulic shock in our system. Ultimately, we achieved an 18% cost saving without compromising on quality or reliability. It was a sound engineering and commercial decision.”

Senior Project Manager Mechanical Engineering Contractor, North America

QUALITY & COMPLIANCE CERTIFIED

Our commitment to quality is verified by internationally recognized standards. We provide the documentation to prove it.

Heavy-Body™ Carbon Steel Wafer Type Butterfly Valve - Worm Gear

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Butterfly Valve Dimensions

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Worm Gear Carbon Steel Valve: Technical FAQs

What are the operational advantages of a worm gear actuator?

A worm gear operator provides precise and safe control, which is critical for system stability and longevity, especially in large-diameter pipelines.

Water Hammer Mitigation: The high gear ratio ensures slow, controlled valve closure, significantly reducing the risk of damaging hydraulic shock (water hammer).
Self-Locking Stability: The mechanism is inherently self-locking, preventing the disc from fluttering or changing position due to line vibrations, ensuring consistent flow control.
High Torque Output: It provides the mechanical advantage needed to easily operate large valves or valves in high-pressure differential applications.

How do you ensure your Carbon Steel (WCB) castings are superior?

As a foundry-based manufacturer, we control the entire process from melt to final casting. This gives us a distinct advantage over suppliers who only assemble parts.

Optimized Chemistry: We target the optimal range for key elements in our ASTM A216 Grade WCB, maintaining tighter controls on carbon and manganese to improve weldability and mechanical strength beyond the minimum standard.
Impurity Minimization: Our controlled foundry processes actively minimize detrimental impurities like sulfur and phosphorus, enhancing the valve body's toughness and long-term integrity.
Verifiable Quality: Every batch is accompanied by a full EN 10204 3.1 Material Test Report (MTR) detailing the exact chemical composition and mechanical properties, giving you verifiable proof of quality.

How does this wafer valve ensure dimensional compatibility and prevent installation issues?

Our valves are engineered to eliminate installation guesswork and ensure a perfect fit in your piping system.

Universal Flange Fit: The wafer body is designed to self-center between multiple flange standards, including ASME B16.5, EN 1092-1, and JIS, ensuring broad project applicability.
Strict Face-to-Face Standard: We manufacture all valves to the strict face-to-face dimensional standards of API 609 Category A. This guarantees they can serve as a direct replacement for other compliant valves without pipe modification.
Thickened Body Option: For demanding chemical applications, we offer custom-thickened bodies compliant with HG/T standards, enhancing pressure resistance and operational lifespan.

What does "bi-directional zero leakage" mean, and how is it verified?

This is our performance guarantee, backed by rigorous, standardized testing. It confirms the valve provides a bubble-tight seal against pressure from either flow direction.

Verification Standard: Every valve we manufacture undergoes hydrostatic and pneumatic pressure testing according to the procedures outlined in the API 598 standard.
Performance Level: We test to achieve Rate A zero leakage, the most stringent classification under API 598, which permits no visible leakage during the specified test duration.
Full Documentation: Each valve or batch is shipped with a detailed pressure test report, providing you with documented proof of its sealing integrity before installation.

What is your warranty policy, and how easy is it to source spare parts?

We support our products for their entire lifecycle to ensure your long-term operational success and low total cost of ownership (TCO).

Comprehensive Warranty: We provide a full 24-month (2-year) warranty from the shipment date against manufacturing defects, with free replacement parts provided as needed.
Standardized Parts: Because our valves are built to international standards (API 609, ISO 5211), wear components like seats and seals are standardized, making them easy to source from us or qualified third parties.
Direct Support: We maintain a stock of common spare parts to support our clients long after the warranty period and offer direct online technical assistance for any maintenance queries.

Heavy-Body™ Stainless Steel Wafer Type Butterfly Valve - Worm Gear

Product Advantages

Standards and Certifications

Specification of the Valve

Material of the Valve

ENGINEERED FOR INDUSTRIAL DURABILITY

HIGH-TENSILE CARBON STEEL

ROBUST & PRECISION ENGINEERING

RELIABLE WORM GEAR OPERATION

Key Application Industries

HVAC & Climate Control

Municipal Water Treatment & Distribution

Fire Protection Systems

Pulp & Paper Processing

Mining & Mineral Processing

Construction & Utilities

General Industrial Services

Agriculture & Irrigation

Marine & Shipbuilding

Engineered for Demanding Environments

High-Pressure Systems

Vibration & Water Hammer

Abrasive Media & Slurries

Large Diameter Pipelines

Frequent Operation & Throttling

Outdoor & Exposed Installations

Resilience Against Corrosion

Industrial Wastewater

Brackish Water & Cooling Towers

Mild Chemical Solutions

Oily Water & Hydrocarbons

Chlorinated & Potable Water

Seawater Intake & Ballast

Industrial HVAC System Upgrade: A Case Study

The Challenge: Balancing Budget, Performance, and Risk

The Solution: A Data-Driven Approach to Value Engineering

✔ Verifiable Material Integrity Through In-House Casting

✔ Enhanced System Safety with Worm Gear Actuators

✔ Guaranteed Performance and Long-Term Reliability

The Results: Quantifiable Success

Supplier & Production Snapshot

QUALITY & COMPLIANCE CERTIFIED

Heavy-Body™ Carbon Steel Wafer Type Butterfly Valve - Worm Gear

Worm Gear Carbon Steel Valve: Technical FAQs

What are the operational advantages of a worm gear actuator?

How do you ensure your Carbon Steel (WCB) castings are superior?

How does this wafer valve ensure dimensional compatibility and prevent installation issues?

What does "bi-directional zero leakage" mean, and how is it verified?

What is your warranty policy, and how easy is it to source spare parts?