Low-Temperature Material Assurance: ASTM A352 LCB/LCC steel ensures impact toughness and mechanical strength at -40°C+, preventing low-temperature brittleness cracks.
Reinforced Valve Body Design: HG/T-compliant structural optimization enhances wall thickness and strength, resisting stress under low temperatures for extended durability.
Flange Precision Customization: Tailored flange adjustments eliminate pipeline dimensional mismatches, ensuring leak-free connections.
Actuator Upgrade Flexibility: ISO 5211-compliant platform supports seamless pneumatic/electric actuator retrofits for system adaptability.
Design and Manufacture: ASME B16.34; ASME VIII; API 609; AWWA
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 |
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|---|---|
|
Type of Connection |
Wafer |
|
Actuation |
Lever |
|
Size |
1 1/2in ~ 8in (DN40~DN200) |
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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 |
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|---|---|
|
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/ SIL/ FKM/ FPM/ VITON/PTFE/ HYPALON/ UHMWPE |
| Coating | Epoxy Resin 200um~250um |
We control the entire manufacturing process, from raw WCB/LCB carbon steel casting to precision machining and coating. This integrated approach ensures every valve meets the highest standards for strength, durability, and performance.
We use only certified WCB and LCB carbon steel, confirmed with in-house PMI and mechanical testing to guarantee tensile strength and impact resistance for demanding industrial applications.
Our CNC machining centers ensure precise dimensions and perfect concentricity between the stem and disc, reducing operational torque and seat wear for a longer service life and reliable sealing.
Every carbon steel valve body undergoes electrostatic spray coating with fusion-bonded epoxy (250μm+), providing a durable, uniform barrier against corrosion and abrasion, validated by salt spray testing.
The following are the representative application industries for this valve. While our carbon steel wafer butterfly valves are versatile, many specific industries not listed here are also fully supported where temperature and pressure align.
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.
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%.
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.
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.
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.
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.
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.
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.
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.
Our carbon steel valves are built for reliability. From abrasive media to temperature extremes and high-vibration settings, we provide robust, cost-effective solutions that ensure operational integrity and longevity.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Our EPDM or NBR lined butterfly valve provides reliable and cost-effective flow control for HVAC applications. Its lever operation allows for quick adjustments.
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.
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.
How JRVAL’s robust carbon steel valves delivered long-term reliability and reduced maintenance costs for a critical municipal water distribution network.
Metro City Waterworks was experiencing frequent failures with their existing valves in a high-flow water distribution hub. The valves suffered from seat wear and stem seal leaks, leading to costly unscheduled maintenance and potential service disruptions.
As a public utility, they needed a cost-effective solution that wouldn't compromise on long-term performance. The replacement valves had to offer superior durability and reliable sealing without the high cost of exotic alloys.
JRVAL specified its Carbon Steel Wafer Butterfly Valves with a durable FBE coating, a high-grade SS316 disc, and an enhanced EPDM seat. The valve’s precision engineering ensures low operating torque, which significantly reduces wear on the seat and extends its service life.
After installation, the JRVAL valves provided consistent, leak-free performance. Maintenance call-outs for this section dropped by 90% in the first year. The utility achieved superior operational reliability and a lower total cost of ownership, meeting their performance and budget goals.
"The JRVAL carbon steel valves have been rock-solid. They handle the pressure and flow without issue. We've saved significantly on maintenance man-hours and gained peace of mind knowing our system is secure."
Our commitment to quality is verified by internationally recognized standards. We provide the documentation to prove it.
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Our valves are engineered for seamless automation integration. Every valve features a top flange machined in strict accordance with ISO 5211 standards. This guarantees dimensional compatibility with standard electric and pneumatic actuators, minimizing installation time and eliminating stem side-loading, which extends the valve's operational life.
As a foundry-direct manufacturer, we control quality from the molten metal. Our competitive advantage lies in:
Our wafer butterfly valves are designed with universal compatibility in mind. The body and alignment holes are precision-machined to fit between a wide range of international flange standards, including ANSI B16.5 Class 150, DIN PN10/PN16, and JIS 10K/16K, ensuring a perfect fit and seal in global projects.
We believe in total transparency. Every shipment is accompanied by a comprehensive quality dossier, which includes:
We stand behind our products with a comprehensive 24-month warranty covering defects in materials and workmanship. Because our valves are built to international standards, spare parts like seats and seals are easily interchangeable. Should you need assistance, our technical team is available online to provide prompt troubleshooting and support.
As the source manufacturer, we oversee the entire process from casting to final testing, ensuring superior material integrity and full traceability.
Our 11 CNC centers guarantee every ISO 5211 top flange is machined for perfect actuator alignment, enhancing the reliability of your automated systems.
Every shipment is backed by a full documentation package—including MTR and pressure test reports—providing the verifiable proof of quality you need.
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Address: DaZhan Industrial Park, Xiaozhan Town, Jinnan District, Tianjin, China
Copyright @ 2025. Tianjin Jiangrui Steel Casting Co., Ltd.
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