Robust Construction: Features a heavy-walled body that significantly exceeds the thickness requirements of standards like HG/T 3704, ensuring superior structural integrity and an enhanced safety margin for demanding applications.
Superior Material Composition: Our valves are cast with chemical compositions at the highest end of international standards. For example, our ASTM A351 CF8 stainless steel contains 9% Nickel—the maximum allowable—to ensure superior corrosion resistance and extended service life.
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 |
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|---|---|
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Type of Connection |
Wafer |
|
Actuation |
Lever |
|
Size |
1 1/2in ~ 8in (DN40~DN200) |
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Pressure |
6bar~20bar (Class 125/150) |
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Testing Pressure |
1.5 x Rated Pressure |
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Medium |
Water, Oil, Gas, Steam, Corrosive Media, Slurry, etc. |
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Medium Temperature |
-25~180℃ (Depends on seat material) |
Material of the Valve |
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|---|---|
|
Body |
Stainless Steel: CF8 (304), CF8M (316), CF3 (304L), CF3M (316L), JS1030, 1.4406 Duplex Stainless Steel: CD3MN (2205), CE3MN (2507) Austenitic Stainless Steel: 1.4529, CN7M (Alloy 20) |
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Disc |
Cast Iron: DI, CI Stainless Steel: CF8 (304), CF8M (316), CF3 (304L), CF3M (316L), CD3MN (Duplex 2205), CE3MN (Super Duplex 2507), 1.4529 (926) Aluminum Bronze: C95400, C95800 Nickel Alloy: CW6MC (Hastelloy C-276 eq.) |
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Shaft |
Carbon Steel: 45# Stainless Steel: SS410, SS416, SS420; SS304, SS316, SS304L, SS316L; 17-4PH (SS630); Duplex 2205, Super Duplex 2507, 1.4529 Nickel Alloy: Monel K500, Hastelloy C-276 |
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Soft Seat |
Elastomers: EPDM, HTEPDM, NBR (Nitrile Rubber / Buna-N), SIL (VMQ), FKM (VITON™), HYPALON™ Plastics: PTFE, PFA, UHMWPE |
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 ProcessThe reliability of a wafer butterfly valve starts with the quality of its cast components. This video documents part of JRVAL's casting production process, from shell preparation and metal pouring to the finished as-cast components. For wafer butterfly valve projects, cast valve bodies can undergo third-party MT inspection after machining, according to the agreed inspection plan.
For projects requiring independent quality verification, JRVAL can arrange third-party non-destructive testing (NDT) for wafer butterfly valve bodies and other cast components, in accordance with applicable standards, agreed inspection scopes and customer requirements.
Used to detect surface and near-surface discontinuities in suitable ferromagnetic valve body and disc materials.
Used to reveal surface-breaking discontinuities on suitable non-porous metallic valve components.
Used to examine internal casting discontinuities in wafer butterfly valve bodies and other cast components, where applicable.
Used to examine internal discontinuities in suitable cast components, subject to material properties and geometry.
The applicable testing method, inspection extent and acceptance criteria depend on the component material, casting geometry, applicable specifications and project requirements.
Discuss Inspection RequirementsIn high-performance butterfly valves, critical features — including shaft bores, disc-to-shaft interfaces and mounting faces — must meet specified tolerances for accurate fit and assembly.
From defence and naval equipment to aerospace and precision industrial systems, applications with tight dimensional tolerances call for accurately machined, repeatable components.
A recent conversation with an agricultural irrigation buyer reminded us that when valves fail, the real cost goes far beyond the purchase price. Replacement, labor, project delays, and accountability all matter.
Verified material grades and traceable EN 10204 Type 3.1 inspection certificates.
Actual pressure and leakage tests with defined procedures and documented results.
Critical dimensions, assembly accuracy and operating performance checked before delivery.
Clear warranty terms, documented product records and accountable technical support.
Quality Should Be Demonstrated, Not Just Promised.
Using Heavy-duty Vertical Turret Lathes (VTL), we machine the inner bore and flange faces to ensure concentricity and Bi-directiona zero leakage.
The top flanges are precisely bored and drilled according to ISO 5211 standards, preventing any torque offset during actuator operation.
Our commitment to quality is verified by internationally recognized standards. We provide the documentation to prove it.
We control the entire manufacturing process, from raw CF8/CF8M stainless steel investment casting to electropolishing and final assembly. This guarantees superior corrosion resistance, purity, and performance in every valve.
Founded by casting experts, we guarantee material integrity from the source. Through PMI spectral testing, we verify alloy compositions, ensuring every butterfly valve casting strictly adheres to ASTM/EN standards for optimal performance and longevity in automated systems.
Our advanced CNC centers machine critical interfaces, like the ISO 5211 mounting pad, to exacting tolerances. This precision guarantees effortless, accurate alignment with any standard electric or pneumatic actuator, ensuring reliable automated control.
With two decades of field validation in automated applications, our valve designs are proven to be sound and reliable. This experience means our products deliver consistent, dependable performance when integrated into complex control systems.
The following are the representative application industries of this valve. Since our stainless steel wafer butterfly valves are highly versatile, many specific industries are not listed individually but are fully supported.
While heavy-body wafer type valves are typically designed for medium-low pressure applications, JRVAL’s butterfly valve incorporates GOST valve compliance through reinforced body wall thickness and thicker stems, which ensures enhanced safety margins and meets the rigorous strength requirements.
JRVAL can provide a special low-temperature epdm lined butterfly valve capable of withstanding -40°C or even lower, meeting the demands of extremely cold regions like Russia.
For municipal water supply, an integral body design offers greater robustness, while a split body facilitates maintenance on certain large-diameter valves. JRVAL, as a wholesale wafer butterfly valve provider, can supply either type based on specific needs.
Valve bodies are typically coated internally and externally with marine-grade heavy anti-corrosion coatings (usually ≥300μm thick). The stem and disc, often found in our butterfly valve ss316 models, are made from seawater-resistant materials.
For the environmental sector, valve bodies utilize heavy anti-corrosion coatings compliant with GOST standards (e.g., multi-layer epoxy or polyurethane, total thickness ≥300μm). The disc and stem of our ss butterfly valves are made from corrosion-resistant alloys to effectively resist erosion from environmental media.
In the food processing industry, the internal and external surfaces of our stainless steel butterfly valves are highly polished (Ra ≤ 0.8μm, even down to 0.4μm), feature a crevice-free design for easy CIP/SIP cleaning, and reduce bacterial growth risk. The seat fits tightly with the body, ensuring no media retention.
JRVAL as a leading wafer butterfly valve manufacturer offers “Mining Heavy-Duty” butterfly valves, featuring a thickened body (wall thickness increased by 20-30% over standard), reinforced stem and bushings, and an optimized seat fixation method. This design effectively resists high abrasion, high impact, and pipeline vibrations, extending the valve’s service life by over 30%.
JRVAL utilizes specially formulated low-temperature EPDM or PTFE seats, combined with an optimized stem sealing design. This ensures reliable sealing and operation of the center line butterfly valve in environments down to -50°C. Verified by low-temperature cycle testing, the leakage rate still meets Grade A after 50,000 cycles.
Our stainless steel wafer butterfly valve is constructed from premium materials such as CF8M, ensuring long-term performance against aggressive saline environments, complemented by robust seat options for reliable, bubble-tight sealing.
How JRVAL’s sanitary stainless steel valves eliminated contamination risks and improved CIP efficiency for a leading beverage producer.
PureTaste Beverages was struggling with inconsistent batch quality. Their existing valves had internal crevices and rough surface finishes that trapped residual product, fostering bacterial growth and making Clean-in-Place (CIP) cycles ineffective.
To combat the contamination, they were forced to perform lengthy, manual teardowns and cleaning, leading to excessive downtime, high labor costs, and wasted cleaning agents. Product purity was constantly at risk.
JRVAL supplied our sanitary stainless steel wafer valves, featuring an electropolished, crevice-free internal surface (Ra ≤ 0.4μm) and a void-free seat design. This ultra-smooth finish provides no purchase for microbial growth and allows for complete drainage.
The impact was transformative. Contamination issues were eliminated, ensuring consistent product quality and safety. The plant’s CIP cycles became highly effective, drastically reducing cleaning time and resource consumption, which directly improved their operational bottom line.
"The difference was night and day. JRVAL's sanitary valves solved a problem we'd been fighting for years. Our cleaning is faster, and our product quality is more reliable than ever. It was the right investment."
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Compare our quality against any brand. We're confident you'll choose JRVAL after an in-depth evaluation of our sample products.
We stand by our craftsmanship. Enjoy a comprehensive warranty covering non-human damage, with spare parts readily available.
Every shipment is backed by comprehensive documentation, including material test reports (MTR), heat treatment reports, and mechanical performance tests.
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Address: DaZhan Industrial Park, Xiaozhan Town, Jinnan District, Tianjin, China
