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Assembly & Material

Precision Control in Your Hands

Wafer Type Handle Butterfly Valves

Wafer valves are a popular choice due to their compact design and lower cost. They are held in place by the compression of two pipeline flanges. JRVAL offers specialized wafer bodies for enhanced performance.

Heavy Body Stainless Steel (Wafer)

The ultimate wafer valve for demanding applications requiring superior corrosion resistance and an enhanced safety margin against pressure and system stress.

  • Robust Construction: Heavy-walled body exceeds standard thickness requirements (e.g., HG/T 3704).
  • Superior Material (9% Nickel): Cast with ASTM A351 CF8 for guaranteed superior corrosion resistance.
Best For: Chemical processing, water treatment, and marine environments.
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Heavy Body Carbon Steel (Wafer)

Engineered for high-stress industrial systems, this valve features an extra-thick body for superior resistance to pipeline pressure and mechanical stress, ensuring long-term reliability.

  • Enhanced Durability: The reinforced carbon steel body provides a higher safety factor in demanding environments.
  • Full MTC Traceability: Comes with a complete Material Test Certificate for ASTM A216 WCB, ensuring quality and compliance.
Best For: Oil & gas, power generation, and general industrial applications requiring high durability.
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Signet Body Carbon Steel (Wafer)

A testament to JRVAL's manufacturing prowess, the Signet body combines robust performance with unparalleled aesthetic and functional details for premier installations.

  • Premium Craftsmanship: Features a finely coated body and a unique, recessed stainless steel nameplate for superior aesthetics and durability.
  • Flange Precision Customization: Tailored flange adjustments eliminate pipeline dimensional mismatches, ensuring leak-free connections.
  • Guaranteed Material Integrity: Guaranteed ASTM A216 WCB composition, maximizing strength and minimizing impurities, with a full MTC for traceability.
Best For: High-end commercial HVAC, architectural projects, and mission-critical industrial facilities.
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Modu-Seal Stainless Steel (Wafer)

A revolutionary design for applications demanding minimal downtime. This valve allows for rapid in-line seat replacement without special tools.

  • Modular Maintenance: Reduce maintenance costs by 90% and downtime by 80%.
  • Space-Optimized Mounting: Kitz-inspired design cuts weight by 30-40% and boosts installation efficiency by 50%.
Best For: Food & Beverage, pharmaceutical, and high-purity applications.
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Lug Type Handle Butterfly Valves

Lug-style valves feature threaded inserts (lugs) that allow them to be installed into a system using bolts. This design is ideal for dead-end service or applications where one side of the piping may need to be disconnected for maintenance.

Lug Stainless Steel

The premium choice for lugged connections, combining the versatility of dead-end service with maximum corrosion resistance and guaranteed dimensional accuracy.

  • Positional Accuracy: Lug hole pattern is precisely controlled to ±0.10 mm and 100% gauge verified.
  • Guaranteed Surface Integrity: Zero porosity, shrinkage, or unauthorized weld repairs.
Best For: Marine, chemical plants, and systems requiring maintenance isolation (e.g., pumps, filters).
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Lug Carbon Steel

The workhorse for industrial dead-end service. This valve provides the strength of carbon steel and the installation flexibility of a full lug design at a competitive price point.

  • Dead-End Service Ready: Full lug design allows for downstream pipe removal while the upstream side remains pressurized.
  • High-Strength Performance: Manufactured from ASTM A216 WCB carbon steel for reliability in high-pressure and high-temperature services.
Best For: Industrial water lines, HVAC balancing, and equipment isolation where stainless steel is not required.
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Lug Ductile Iron

A highly reliable and economical option, providing excellent strength and durability for a wide range of industrial and municipal applications.

  • Excellent Strength-to-Weight Ratio: Offers strength approaching steel with superior corrosion resistance.
  • Cost-Effective Performance: The ideal choice where performance and budget are key considerations.
Best For: Municipal water works, wastewater treatment plants, and large-scale HVAC systems.
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Flange Type Handle Butterfly Valves

Featuring two integral flanges that mate directly with pipeline flanges, this design provides the most secure and rigid valve connection. It is the preferred choice for larger sizes, higher pressures, and critical applications.

Flange Stainless Steel

The pinnacle of reliability for flanged connections, engineered for critical service in corrosive environments where a leak-proof seal and structural integrity are non-negotiable.

  • Precision-Matched Flanges: Customized from pipeline measurements and reinforced per standards to ensure a perfect, leak-free seal.
  • Traceable Craftsmanship: ISO9001 casting with permanent markings enables lifetime quality tracking.
Best For: Large-diameter pipelines (DN300+), high-pressure chemical lines, and offshore platforms.
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Flange Carbon Steel

Delivers the same robust, leak-proof performance for demanding industrial applications where high-grade corrosion resistance is not the primary requirement.

  • Guaranteed Material Integrity: Full Material Test Certificate (MTC) provided with every shipment.
  • Full-Process Reliability: Reinforced stems, pins, and components ensure performance that exceeds industry standards.
Best For: High-pressure steam lines, oil & gas transportation, and large-scale industrial water systems.
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Choosing the Right Actuator: A Comparative Guide

The valve body is only part of the solution. Selecting the correct actuator is critical for performance, safety, and efficiency. This guide compares the most common options for butterfly valves.

Actuator Type Operating Principle Key Advantages Best Applications / Industries
Handle (Lever) Manual quarter-turn (90°) operation. Often includes a locking mechanism or notched plate for positioning.
  • Simple, low cost, and reliable.
  • Provides immediate visual feedback of valve position.
  • No external power source required.
  • Fast-acting for quick shutoff.
  • Small-diameter pipelines (typically ≤ DN300).
  • General purpose water, air, and chemical lines.
  • Applications requiring infrequent operation.
  • Food & Beverage, HVAC, Water Treatment.
Gear (Worm Gear) A manual handwheel turns a gearbox, which multiplies torque to make opening/closing large valves easier.
  • Significantly reduces the physical effort needed.
  • Allows for precise control and throttling.
  • Prevents water hammer by enabling slow operation.
  • Self-locking design holds the disc in position.
  • Large-diameter valves (≥ DN250).
  • High-pressure or high-flow systems.
  • Municipal Waterworks, Power Plants, Shipbuilding.
  • Any application needing slow, controlled operation.
Pneumatic Uses compressed air to move a piston or diaphragm, which rotates the valve stem. Can be spring-return or double-acting.
  • Very fast and powerful actuation.
  • High cycle life and extremely reliable.
  • Intrinsically safe for explosive environments (no spark).
  • Lower cost than electric actuators for large sizes.
  • Automated process control systems.
  • Emergency shutdown (ESD) systems (spring-return).
  • High-cycle applications.
  • Chemical, Oil & Gas, Pharmaceutical.
Electric An electric motor drives a gear train to rotate the valve stem. Can offer sophisticated control options.
  • Extremely precise positioning for modulation control.
  • Ideal for remote operation where compressed air is unavailable.
  • Easily integrates with PLC and SCADA systems.
  • Low energy consumption when not in operation.
  • Remote and unmanned facilities (e.g., pipelines).
  • Advanced automation and process control.
  • Wastewater Treatment, Power Generation, HVAC.
  • Applications requiring complex control logic.

Why Partner with JRVAL?

We are not just a supplier; we are your china vertically integrated manual butterfly valve manufacturing partner. We control every step of the process to deliver valves that meet the highest international standards for performance and reliability.

Uncompromising Quality

ISO9001, BV, and CE certified. We provide complete test reports for material, heat treatment, and mechanical performance with every shipment.

Vertically Integrated Factory

From raw casting and precision machining to final assembly, we control the entire production line. This ensures consistent quality and faster lead times.

Risk-Free Procurement

Free Samples. Compare our valve quality against any other brand before you purchase. 

Custom & Standard Solutions

With over 2,000 sets of independent machining process tooling, we can deliver both standardized and fully customized valve solutions for any application.

2-Year Warranty

We guarantee our valves against non-human damage. The valve body, disc, and seat are all available for new spare parts replacement if needed.

Ready to Find the Butterfly Valve?

Our engineers are ready to help you select the ideal handle butterfly valve for your specific application and provide a competitive quote. Contact us today to request your free sample.

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