Carbon Steel Wafer Butterfly Valve - Lever

Petrochemical Industry

Our wafer type valve is constructed from high-quality Q235/WCB carbon steel, rigorously tested for high-pressure resistance with a tensile strength of ≥480MPa, ensuring structural integrity and superior resistance to external impacts.

Power Generation

Featuring WCB body with SS316(CF8M) disc, The wafer butterfly valves' specialized EPDM seat can withstand water temperatures up to 120°C and has demonstrated stable operation for over 5 years in closed cooling water systems at multiple power plants, with an average annual failure rate of <0.5%.

Municipal Water Supply Industry

The wafer type unit comes standard with an SS316 (CF8M) stainless steel disc and a food-grade EPDM seat (compliant with GB/T 17219 or equivalent international standards), ensuring the safety of drinking water.

Shipbuilding Industry

As a leading wafer butterfly valve supplier, our JRVAL valve bodies for marine applications are protected by a marine-grade system of epoxy zinc-rich primer, epoxy micaceous iron oxide intermediate coat, and polyurethane topcoat (or an equivalent heavy-duty anti-corrosion coating), meeting ISO 12944 C4/C5-M corrosion protection standards with salt spray test resistance exceeding 1000 hours.

Environmental Protection Industry

This wafer butterfly is standardly equipped with an SS316L (CF3M) stainless steel disc, with options for Hastelloy C or duplex steel discs. The EPDM seat, enhanced by a special vulcanization process, offers a 20% improvement in aging resistance.

Food Processing Industry

The JRVAL butterfly valve type wafer utilizes a specially designed seat to ensure bi-directional bubble-tight sealing, preventing leakage of utility media into production areas. The valve body’s external coating is smooth and resistant to wiping and rinsing with common food plant cleaning agents.

Mining & Metals Industry

JRVAL butterfly valve with ptfe seat feature a self-cleaning seat design, reducing the accumulation of solid particles. The disc edge is specially treated to effectively scrape off adherents during closure.

Refrigeration & Cold Storage Industry

The JRVAL butterfly valve epdm lined features a valve body with a weather-resistant epoxy resin coating, effectively resisting condensation and humidity in cold storage environments. It is standardly equipped with an SS316 stainless steel disc, and its specially formulated low-temperature EPDM seat is suitable for ethylene glycol solutions or cooling water down to -40°C.

Seawater Desalination Industry

Marine Butterfly Valves with SS316 (CF8M) Stainless Steel Discs and ISO-compliant corrosion-resistant coatings are specifically designed for seawater desalination systems. The valves withstand chloride-rich environments and high-pressure cycles, ensuring long-term durability in harsh marine applications.

Corrosive Environments

JRVAL’s wcb wafer butterfly valve provides a high-value solution through specific design enhancements. For instance, in a coastal chemical plant’s cooling water system, a JRVAL DN200 PN16 carbon steel model with a C4 heavy-duty anti-corrosion coating on the body, an SS316 disc, and an EPDM seat has demonstrated over 3 years of stable operation, with its external coating remaining free of peeling or rust.

Abrasive Particle Environments

JRVAL enhances the durability of the butterfly valve wafer type lever operated by offering options such as an SS316 disc with a laser-cladded tungsten carbide coating (achieving hardness over HV1200 and 5-8 times the wear resistance of standard SS316), or alternatively, solid high-chromium cast iron or duplex steel 2507 disc selections.

Vibration-Prone Environments

JRVAL butterfly lever valve features a thickened body design and reinforced connection points, such as the stem hole and bearing seat, to significantly improve its anti-vibration performance.

Space-Constrained Environments

Our butterfly handle valve strictly adheres to the EN 558 Series 20 (ISO 5752 Series 20) short pattern standard. For the same nominal diameter, its face-to-face length is approximately 70-80% shorter than traditional gate valves and notably shorter than ball valves, making it ideal for compact installations..

Dense Piping Environments

For dense piping environments, installing the wafer type EN 593 butterfly valve is simplified as it does not require aligning multiple bolt holes like flanged valves; it can be secured with just a few long bolts, enabling rapid installation and efficient maintenance.

Low-Temperature Environments

JRVAL utilizes wide-temperature range or specialized low-temperature grease for the butterfly valve hand lever and stem bearings, ensuring that operating torque variations remain within acceptable limits at designated sub-zero temperatures.

Water Supply Systems

JRVAL selects high-quality carbon steel for its blue butterfly valve, ensuring high casting integrity and a dense internal structure. The valve’s internal and external surfaces are typically electrostatically coated with fusion bonded epoxy (FBE), enhancing corrosion resistance and extending service life, making it particularly suitable for humid water supply environments.

Wastewater Treatment Systems

JRVAL employs high-quality carbon steel for its butterfly valve wafer type lever operated, with special emphasis on robust internal and external anti-corrosion measures. The standard configuration includes a multi-layer heavy-duty epoxy resin coating (such as FBE or liquid epoxy), effectively resisting acid-alkali corrosion and microbial attack commonly found in wastewater.

Semiconductor Ultrapure Water Systems

JRVAL's ptfe seat butterfly valve is engineered for high-purity applications. Its carbon steel body is internally protected with high-integrity epoxy coating, while wetted parts like the PTFE seat and a highly polished stainless steel disc (e.g., CF8M option) minimize particle generation and contamination, ensuring system cleanliness.

HVAC Systems

Our EPDM or NBR lined butterfly valve provides reliable and cost-effective flow control for HVAC applications. Its lever operation allows for quick adjustments.

Heating Systems

JRVAL offers its carbon steel butterfly valve (available in sizes DN40-DN200) with pressure ratings of PN10/PN16. The standard EPDM seat is suitable for a broad temperature range of -20°C to +120°C. These valves can be supplied to meet various flange standards including GB, ANSI, DIN, and JIS according to specific project requirements.

Gas Systems (Utility Gas)

JRVAL's EPDM or NBR seat butterfly valve features a precision-machined disc and a resilient seat to ensure tight shut-off, capable of achieving ANSI Class VI / ISO 5208 Class A zero leakage standards. Its 90° quick open/close lever action facilitates rapid response in emergency situations.