The Definitive Guide to Pneumatic Butterfly Valves

Automate your flow control with confidence. This guide helps you select the perfect pneumatically actuated butterfly valve, engineered and built from the ground up by JRVAL, your vertically integrated source factory.

Choose Your Actuator

Understand the crucial differences between Double-Acting and Spring-Return actuators and select the right accessories for your automation needs.

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Select Your Butterfly Valve

Compare Wafer, Lug, and Flange connection types to find the perfect match for your pipeline requirements, from space-saving to dead-end service.

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Configure Your Automation: Actuators & Accessories

A high-quality valve is just the beginning. The right actuator and accessories are critical for reliable, efficient, and safe automated performance. JRVAL provides fully assembled and tested valve packages tailored to your specifications.

Double-Acting Actuator

Uses compressed air to both open and close the valve. This is the standard, cost-effective choice for general on/off automation.

Requires air pressure for every operation.
Ideal for stable systems where power/air loss is not critical.
Lower initial cost compared to Spring-Return.

Spring-Return (Fail-Safe) Actuator

Uses compressed air for one action (e.g., to open) and a powerful internal spring for the other (e.g., to close). Essential for safety.

Automatically returns to a "safe" position upon loss of air or power.
Specify "Fail-Close" or "Fail-Open" based on process needs.
Critical for emergency shutdown (ESD) systems.

Control & Feedback Accessories

Integrate your automated valve into a control system with essential add-ons for triggering actions and monitoring status.

Solenoid Valve: The electrical "trigger" that directs air to the actuator.
Limit Switch Box: Provides electrical feedback to confirm the valve's open/closed position.

Positioning & Air Preparation

Ensure precise control and long actuator life with accessories for modulating service and clean air supply.

Electro-Pneumatic Positioner: Allows for precise throttling control (e.g., 35% open).
Air Filter Regulator (AFR): Guarantees clean, dry air at the correct pressure for optimal performance.

Step 2: Select Your Valve Body & Material

Find the exact valve for your application. We control the entire casting and machining process to ensure every material meets its specified standard for chemical resistance and mechanical strength.

Stainless Steel (CF8/CF8M) Valves

For superior corrosion resistance in chemical, food-grade, and marine applications.

Pneumatic Stainless Steel Lug Butterfly Valve

Stainless Steel Lug Type

Combines the superior corrosion resistance of stainless steel with the dead-end service capability of a lug body, perfect for isolating equipment in corrosive environments.

High-Nickel Casting: Our CF8/CF8M castings contain 8%-9% Nickel for maximum defense against corrosion.
Precision Lugs: Threaded inserts are 100% gauge-verified for perfect alignment and reliable dead-end service.

Best For: Chemical plant equipment isolation, marine systems, water desalination plants.

View SS Lug Valves

Pneumatic Stainless Steel Flange Butterfly Valve

Stainless Steel Flange Type

The ultimate choice for high-pressure, large-diameter applications in corrosive media, offering a robust, leak-proof flanged connection.

High-Nickel Casting: Our CF8/CF8M castings contain 8%-9% Nickel for maximum defense against corrosion.
Reinforced Flanges: Integral flanges provide superior structural integrity for high-pressure and high-vibration lines.

Best For: Offshore platforms, large-scale chemical processing, LNG terminals.

View SS Flange Valves

Pneumatic Stainless Steel Wafer Butterfly Valve

Heavy-Body™ Stainless Steel Wafer Type

A lightweight, space-saving, and cost-effective solution for general service applications requiring excellent corrosion resistance.

High-Nickel Casting: Our CF8/CF8M castings contain 8%-9% Nickel for maximum defense against corrosion.
Heavy-Body Design: Features a robust, thick-walled body that exceeds standards for an enhanced safety margin.

Best For: Food & Beverage production, water treatment, light chemical lines.

View SS Wafer Valves

Pneumatic Stainless Steel Sanitary Wafer Butterfly Valve with Quick-Change Seat

Modu-Seal™ Stainless Steel Wafer

Engineered for hygienic applications, this valve features a modular quick-change seat and Kitz-inspired body, drastically reducing maintenance downtime in food, beverage, and pharmaceutical lines.

High-Resilience Seat: A high-rubber blend EPDM/PTFE seat withstands 200°C CIP cycles with 2-year field-verified elasticity retention.
Modular Quick-Change Seat: Reduces maintenance costs by up to 90% and downtime by 80% with a user-replaceable seat design.
Zero-Porosity Casting: High-density casting guarantees a solid, non-porous 304/316L body, passivated for a smooth, hygienic surface.

Best For: Food & Beverage, pharmaceutical, biotech, CIP/SIP systems, high-purity applications.

View Wafer Valves

Carbon Steel (WCB) Valves

The industrial workhorse for high-strength, high-temperature, and high-pressure applications with non-corrosive media.

Pneumatic Carbon Steel Lug Butterfly Valve

Carbon Steel Lug Type

Offers high strength for industrial equipment isolation. The lug body allows for dead-end service, ideal for maintenance in power plants and refineries.

Integrity-Guaranteed Casting: Our WCB castings are guaranteed free from porosity and shrinkage for reliable high-pressure performance.
Precision Lugs: Threaded inserts are 100% gauge-verified for perfect alignment and reliable dead-end service.

Best For: Oil & Gas (midstream), power generation, pulp & paper, heavy industrial maintenance.

View CS Lug Valves

Pneumatic Carbon Steel Wafer Butterfly Valve

Heavy-Body™ Carbon Steel Wafer Type

An economical and compact choice for general industrial services that require higher strength and temperature ratings than ductile iron.

Integrity-Guaranteed Casting: Our WCB castings are guaranteed free from porosity and shrinkage for reliable high-pressure performance.
Heavy-Body Design: Features a robust, thick-walled body that exceeds standards for an enhanced safety margin.

Best For: HVAC systems, general utility lines, non-corrosive industrial processes.

View CS Wafer Valves

Pneumatic Carbon Steel High-Performance Wafer Butterfly Valve

Signet™ Carbon Steel Wafer Type

An upgraded wafer valve engineered for precision, featuring a premium finish and customizable flange seating for guaranteed leak-free performance in demanding applications.

Premium Craftsmanship: Features a finely coated body and a unique, recessed stainless steel nameplate for superior aesthetics and durability.
Precision Flange Seating: Tailored flange adjustments eliminate pipeline dimensional mismatches, ensuring a perfect, leak-free connection.
Guaranteed Material Integrity: Our ASTM A216 WCB casting has an optimized composition with full MTC traceability, maximizing strength.

Best For: Critical process lines, high-vibration environments, applications requiring zero-leakage.

View Wafer Valves

Ductile Iron (DI) Valves

The reliable and cost-effective standard for water, wastewater, and general utility services.

Pneumatic Ductile Iron Lug Butterfly Valve

Ductile Iron Lug Type

Provides reliable dead-end service for isolating pumps and equipment in municipal water systems, fire protection, and HVAC applications.

Durable Epoxy Coating: Coated for excellent resistance to abrasion and corrosion in water-based media.
Precision Lugs: Threaded inserts are 100% gauge-verified for perfect alignment and reliable dead-end service.

Best For: Pump stations, fire protection systems, building HVAC systems.

View DI Lug Valves

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 vertically integrated manufacturing partner. From casting to assembly, we control every step to deliver valves that meet the highest international standards for performance and reliability.

Qualified Quality

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

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. Experience the JRVAL difference firsthand.

Custom & Standard Solutions

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

2-Year Warranty

We stand by our craftsmanship. Valve body, disc, and seat are all available for new spare parts replacement under our comprehensive warranty.

Ready to Automate Your Process?

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

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