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 ~ 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/ SI/ FKM/ FPM/ VITON/ PTFE/ HYPALON/ UHMWPE

High-Density Casting for Lug Butterfly Valve

High-Density Casting: Zero Porosity Guaranteed

Our butterfly 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 Process

ENGINEERED FOR ROBUST INDUSTRIAL APPLICATIONS

We specialize in manufacturing high-integrity stainless steel lug butterfly valves. Our vertically integrated process, from investment casting to precision CNC machining of lugs and high-torque gear assembly, ensures exceptional reliability, especially in dead-end service and demanding industrial environments.

ROBUST MATERIAL INTEGRITY

We utilize certified high-grade stainless steel (CF8/CF8M, Duplex) verified by PMI testing, ensuring superior strength and corrosion resistance for the valve body and critical components under high operational stress.

PRECISION LUG ENGINEERING

Our advanced CNC centers machine lug threads to exact tolerances, guaranteeing secure flange connections, perfect alignment, and reliable performance in dead-end service applications where valve integrity is paramount.

HIGH-TORQUE WORM GEAR ACTUATION

Each valve is paired with a heavy-duty worm gear operator, providing high torque for consistent, bubble-tight shutoff and precise flow control, even in large-diameter or high-pressure pipelines.

TAILORED FOR KEY INDUSTRIAL SECTORS

Our worm gear lug butterfly valves provide robust solutions across a spectrum of demanding industries. While these are primary examples, their versatility makes them suitable for many other specialized applications.

Chemical Processing

For handling aggressive media, our fully lined teflon lined butterfly valve offers superior chemical resistance, while the lugged body ensures secure, leak-free installation in critical chemical transfer lines.

Shipbuilding & Marine

In ballast, cooling, and bilge systems, the robust lug design and corrosion-resistant materials of our marine butterfly valve withstand the harsh saline environment and constant vibration, ensuring long-term reliability on board.

Water Treatment Plants

Ideal for isolation at pump stations and filtration units, our awwa butterfly valve complies with municipal standards. The lug design simplifies maintenance, allowing for removal of downstream equipment without shutting down the entire line.

Petrochemical Industry

Engineered for safety and performance in utility lines for oil, gas, and hydrocarbon processing, our api 609 butterfly valve provides dependable shutoff, meeting the stringent requirements of the petrochemical sector.

HVAC & District Cooling

In large-scale commercial and industrial cooling systems, our hvac butterfly valve with worm gear operator allows for precise balancing and reliable isolation of chilled water lines, ensuring efficient system performance.

Pulp and Paper

Designed to handle abrasive media, our butterfly valve for slurry application features durable seat materials and a strong stem, preventing clogging and wear when controlling the flow of pulp stock and chemical liquors.

Power Generation

Our high temperature butterfly valve is essential for cooling water intake systems and auxiliary lines in power plants. The robust lugged construction and worm gear ensure reliable operation under demanding thermal conditions.

Mining Operations

For dewatering and process water lines, our heavy-duty, rubber lined butterfly valve offers exceptional resistance to abrasion from sand and grit, with a lugged body that withstands the high pressures and vibrations common in mining.

Desalination Plants

In reverse osmosis and brine disposal systems, our cf8m butterfly valve provides excellent corrosion resistance against high-salinity seawater, ensuring long service life and minimal maintenance in these critical facilities.

BUILT FOR CHALLENGING OPERATING CONDITIONS

Our lug butterfly valves with worm gear operators are specifically engineered to excel where standard valves fall short, delivering control and reliability under pressure, vibration, and extreme conditions.

High-Pressure Differentials

The robust body and high-strength stem are designed to handle significant pressure drops. A pn16 butterfly valve configuration ensures integrity and tight sealing, preventing disc flutter and stem failure in demanding applications.

Dead-End Service

The key advantage of a lug and wafer type butterfly valve is its suitability for end-of-line service. The full set of threaded lugs allows the downstream flange to be disconnected for maintenance while the valve holds pressure.

High-Cycle Automation

Equipped with a standardized top flange, our iso 5211 butterfly valve allows for direct mounting of electric or pneumatic actuators. This is ideal for automated processes requiring frequent and reliable valve operation.

Abrasive Media Flow

For pipelines transporting slurries or water with suspended solids, a specially formulated rubber seat butterfly valve provides excellent resilience and sealing performance, protecting the valve body from erosive wear and ensuring a long service life.

Low-Temperature & Cryogenic

For applications involving LNG or industrial gases, our cryogenic butterfly valve features an extended bonnet and specialized materials that maintain flexibility and sealing integrity at temperatures down to -196°C (-320°F).

Large Diameter Pipelines

The worm gear operator provides significant mechanical advantage, making it easy to actuate a 24 inch butterfly valve or larger. This ensures smooth, controlled operation and reliable shutoff in major water mains or industrial piping.

BUILT FOR CORROSIVE MEDIA

Selecting the right material is critical for valve longevity. We offer a range of specialized body, disc, and seat materials to provide robust solutions against chemical attack.

Strong Acids (e.g., Sulfuric, HCl)

A fully lined ptfe lined butterfly valve provides a near-universal solution for aggressive acids. The inert PTFE barrier protects all wetted parts, ensuring maximum corrosion resistance and process purity.

Caustics & Alkalis

For handling caustic soda (sodium hydroxide) or other alkaline solutions, our epdm seat butterfly valve provides excellent chemical compatibility and sealing performance at a cost-effective price point for these common industrial chemicals.

Seawater and Brine

The high molybdenum content in a butterfly valve ss316 body and disc offers superior resistance to chloride pitting and crevice corrosion, making it the ideal choice for desalination plants, offshore platforms, and coastal facilities.

Oxidizing Agents

For media such as sodium hypochlorite (bleach) or chlorinated water, a viton butterfly valve is specified. Its FKM seat material offers excellent resistance to degradation from strong oxidizing chemicals, ensuring a reliable seal.

Chlorinated Solvents

To prevent chemical attack on valve components, we offer a teflon coated butterfly valve. The coating creates an impermeable barrier against aggressive solvents, extending the valve's operational life in demanding chemical applications.

Sour Gas (H₂S) Environments

For oil and gas applications with hydrogen sulfide, a NACE MR0175 compliant hastelloy valve is essential. Its specialized alloy composition resists sulfide stress cracking, ensuring safety and reliability in highly corrosive upstream processes.

Case Study: Chemical Plant Reliability Upgrade

How our foundry-direct approach delivered a durable, cost-optimized solution for a chemical processor, mitigating recurring downtime and improving operational safety.

The Challenge

Premature Valve Failure & Unplanned Downtime

A mid-sized chemical plant was experiencing frequent failures with their existing wafer butterfly valves on a process line handling moderately corrosive solvents. Pitting corrosion on the valve bodies and seat degradation led to an average failure rate of one valve per quarter, causing costly, unplanned production halts.

Inefficient Flow Control & Operator Safety

The large-diameter valves were fitted with basic lever operators, requiring significant physical effort for actuation. This not only posed an ergonomic risk to operators but also made precise flow throttling for process adjustments difficult and inconsistent, impacting batch quality.

The JRVAL Solution & Result

Material Integrity via In-House Foundry Control

As a foundry-based manufacturer, we addressed their primary concern of corrosion. We cast the ASTM A351 CF8M bodies with a wall thickness conforming to the GOST standard, which is approximately 10-15% thicker than the minimum requirement. This provides a greater corrosion allowance and structural rigidity. We supplied our in-house MTRs and dimensional QC reports for verification.

Reliable Sealing and Improved Flow Dynamics

Our wafer valve's proprietary clog-resistant internal geometry and precision-molded seat ensure a smooth flow path, minimizing residue accumulation. Every valve was tested to guarantee bi-directional zero leakage as per API 598 Rate A. This combination significantly extended the valve's service life in the demanding chemical environment.

Enhanced Control with Worm Gear Actuation

We replaced the problematic lever operators with our robust worm gear operators. This provided the necessary mechanical advantage for effortless actuation, enabling precise and repeatable throttling. The self-locking nature of the gear mechanism also prevented disc flutter, contributing to a more stable and reliable process control.

"We were caught between high-cost premium brands and the unreliable valves that were failing us. JRVAL's technical team demonstrated their control over the casting process and material quality. The thicker body casting was a noticeable difference. Two years in, we've gone from quarterly valve replacements on that line to zero. The worm gears have made a tangible difference for our operators during process adjustments."

— Maintenance Manager, Confidential Chemical Plant

QUALITY & COMPLIANCE CERTIFIED

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

Stainless Steel Lug Type Butterfly Valve - Worm Gear

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Butterfly Valve Dimensions

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Worm Gear Wafer Butterfly Valve: Technical FAQs

What are the primary advantages of a worm gear operator over a standard lever handle?

A worm gear operator is essential for applications requiring precise control and high torque. Its main benefits are:

High-Torque Operation: It provides significant mechanical advantage, making it easy to operate large-diameter valves (typically DN200 and above) or valves in high-pressure lines without excessive physical effort.
Precise Throttling: Unlike a lever's limited positions, the gearbox allows for fine, incremental adjustments to the disc angle, enabling accurate flow control.
Self-Locking Safety: The gear mechanism is inherently self-locking. It holds the disc firmly in any position against flow-induced torque (hydraulic forces), preventing disc flutter and ensuring the set point is maintained.

As a source manufacturer, how does your in-house casting process benefit the quality of your stainless steel wafer bodies?

Our vertical integration as a foundry-based manufacturer, led by a 20-year casting expert, provides direct control over quality at the most critical stage:

Material Purity Control: We manage the entire melt process, ensuring the chemical composition of our stainless steel (e.g., CF8M/SS316) consistently meets or exceeds ASTM A351 standards, with verifiable MTRs for every batch.
Superior Casting Integrity: Direct oversight of the casting and heat treatment processes minimizes the risk of defects like porosity, shrinkage, or inclusions, resulting in a mechanically sound and reliable valve body.
Full Traceability: We offer a clear and unbroken chain of custody from raw material ingot to the final machined valve, providing clients with confidence and verifiable documentation.

What flange standards are your wafer butterfly valves compatible with, and what is the face-to-face dimension standard?

Our worm gear wafer butterfly valves are designed for broad international compatibility to ensure seamless integration into your piping system.

Flange Compatibility: The universal wafer body is designed to fit between flanges drilled to major international standards, including ANSI B16.5 Class 150, EN 1092-1 PN10/PN16, and JIS B2220 10K.
Face-to-Face Dimensions: All valves are manufactured to the strict face-to-face dimensional standards of API 609 Category A. This guarantees interchangeability with other compliant valves and simplifies system design and maintenance.

What does "bi-directional zero leakage" mean for your valves, and under what test conditions is this verified?

"Bi-directional zero leakage" is a technical performance guarantee, not a marketing term. It means our valves are proven to provide a bubble-tight seal against pressure from either direction of flow.

Verification Standard: Every single valve we produce is hydrostatically and pneumatically pressure tested according to the rigorous procedures outlined in the API 598 standard.
Performance Level: We test to achieve Rate A zero leakage, which is the most stringent classification under API 598. This means no visible leakage is permitted through the seat during the specified test duration. A detailed pressure test report is available for each valve.

What is your warranty policy, and how easy is it to source spare parts like seats after the warranty period?

We stand behind our product quality with a clear and supportive policy that addresses both immediate and long-term needs.

Warranty Period: We provide a comprehensive 24-month (2-year) warranty from the date of shipment against manufacturing defects. During this period, we will supply any necessary replacement parts free of charge.
Post-Warranty Support: Since our valves are built to international standards (API 609), key wear components like seats and seals are standardized. This makes sourcing replacements straightforward. We also maintain a ready stock of common spare parts to support our clients for the entire lifecycle of the valve.

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

Product Advantages

Standards and Certifications

Specification of the Valve

Material of the Valve

High-Density Casting: Zero Porosity Guaranteed

ENGINEERED FOR ROBUST INDUSTRIAL APPLICATIONS

ROBUST MATERIAL INTEGRITY

PRECISION LUG ENGINEERING

HIGH-TORQUE WORM GEAR ACTUATION

TAILORED FOR KEY INDUSTRIAL SECTORS

Chemical Processing

Shipbuilding & Marine

Water Treatment Plants

Petrochemical Industry

HVAC & District Cooling

Pulp and Paper

Power Generation

Mining Operations

Desalination Plants

BUILT FOR CHALLENGING OPERATING CONDITIONS

High-Pressure Differentials

Dead-End Service

High-Cycle Automation

Abrasive Media Flow

Low-Temperature & Cryogenic

Large Diameter Pipelines

BUILT FOR CORROSIVE MEDIA

Strong Acids (e.g., Sulfuric, HCl)

Caustics & Alkalis

Seawater and Brine

Oxidizing Agents

Chlorinated Solvents

Sour Gas (H₂S) Environments

Case Study: Chemical Plant Reliability Upgrade

The Challenge

Premature Valve Failure & Unplanned Downtime

Inefficient Flow Control & Operator Safety

The JRVAL Solution & Result

Material Integrity via In-House Foundry Control

Reliable Sealing and Improved Flow Dynamics

Enhanced Control with Worm Gear Actuation

QUALITY & COMPLIANCE CERTIFIED

Stainless Steel Lug Type Butterfly Valve - Worm Gear

Worm Gear Wafer Butterfly Valve: Technical FAQs

What are the primary advantages of a worm gear operator over a standard lever handle?

As a source manufacturer, how does your in-house casting process benefit the quality of your stainless steel wafer bodies?

What flange standards are your wafer butterfly valves compatible with, and what is the face-to-face dimension standard?

What does "bi-directional zero leakage" mean for your valves, and under what test conditions is this verified?

What is your warranty policy, and how easy is it to source spare parts like seats after the warranty period?