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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|---|---|
|
Type of Connection |
Wafer |
|
Actuation |
Worm Gear |
|
Size |
1 1/2in ~ 48in (DN40~DN1200) |
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Pressure |
6bar~20bar (Class 125/150) |
|
Testing Pressure |
1.5 x Rated Pressure |
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Medium |
Water, Oil, Gas, Steam, Corrosive Media, Slurry, etc. |
|
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: 2205, 2507 Austenitic Stainless Steel: 1.4529, CN7M (Alloy 20) |
|
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.) |
|
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 |
|
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 ProcessWe specialize in manufacturing high-integrity stainless steel lug butterfly valves. Our vertically integrated process, from investment casting to precision CNC machining of lugs and high-torque gear assembly, ensures exceptional reliability, especially in dead-end service and demanding industrial environments.
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.
Our worm gear lug butterfly valves provide robust solutions across a spectrum of demanding industries. While these are primary examples, their versatility makes them suitable for many other specialized applications.
For handling aggressive media, our fully lined teflon lined butterfly valve offers superior chemical resistance, while the lugged body ensures secure, leak-free installation in critical chemical transfer lines.
In ballast, cooling, and bilge systems, the robust lug design and corrosion-resistant materials of our marine butterfly valve withstand the harsh saline environment and constant vibration, ensuring long-term reliability on board.
Ideal for isolation at pump stations and filtration units, our awwa butterfly valve complies with municipal standards. The lug design simplifies maintenance, allowing for removal of downstream equipment without shutting down the entire line.
Engineered for safety and performance in utility lines for oil, gas, and hydrocarbon processing, our api 609 butterfly valve provides dependable shutoff, meeting the stringent requirements of the petrochemical sector.
In large-scale commercial and industrial cooling systems, our hvac butterfly valve with worm gear operator allows for precise balancing and reliable isolation of chilled water lines, ensuring efficient system performance.
Designed to handle abrasive media, our butterfly valve for slurry application features durable seat materials and a strong stem, preventing clogging and wear when controlling the flow of pulp stock and chemical liquors.
Our high temperature butterfly valve is essential for cooling water intake systems and auxiliary lines in power plants. The robust lugged construction and worm gear ensure reliable operation under demanding thermal conditions.
For dewatering and process water lines, our heavy-duty, rubber lined butterfly valve offers exceptional resistance to abrasion from sand and grit, with a lugged body that withstands the high pressures and vibrations common in mining.
In reverse osmosis and brine disposal systems, our cf8m butterfly valve provides excellent corrosion resistance against high-salinity seawater, ensuring long service life and minimal maintenance in these critical facilities.
How our foundry-direct approach delivered a durable, cost-optimized solution for a chemical processor, mitigating recurring downtime and improving operational safety.
A mid-sized chemical plant was experiencing frequent failures with their existing wafer butterfly valves on a process line handling moderately corrosive solvents. Pitting corrosion on the valve bodies and seat degradation led to an average failure rate of one valve per quarter, causing costly, unplanned production halts.
The large-diameter valves were fitted with basic lever operators, requiring significant physical effort for actuation. This not only posed an ergonomic risk to operators but also made precise flow throttling for process adjustments difficult and inconsistent, impacting batch quality.
As a foundry-based manufacturer, we addressed their primary concern of corrosion. We cast the ASTM A351 CF8M bodies with a wall thickness conforming to the GOST standard, which is approximately 10-15% thicker than the minimum requirement. This provides a greater corrosion allowance and structural rigidity. We supplied our in-house MTRs and dimensional QC reports for verification.
Our wafer valve's proprietary clog-resistant internal geometry and precision-molded seat ensure a smooth flow path, minimizing residue accumulation. Every valve was tested to guarantee bi-directional zero leakage as per API 598 Rate A. This combination significantly extended the valve's service life in the demanding chemical environment.
We replaced the problematic lever operators with our robust worm gear operators. This provided the necessary mechanical advantage for effortless actuation, enabling precise and repeatable throttling. The self-locking nature of the gear mechanism also prevented disc flutter, contributing to a more stable and reliable process control.
"We were caught between high-cost premium brands and the unreliable valves that were failing us. JRVAL's technical team demonstrated their control over the casting process and material quality. The thicker body casting was a noticeable difference. Two years in, we've gone from quarterly valve replacements on that line to zero. The worm gears have made a tangible difference for our operators during process adjustments."
Our commitment to quality is verified by internationally recognized standards. We provide the documentation to prove it.
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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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