Thread Machining: Machined to international standards with go/no-go gauge inspection. Ensures precise thread accuracy to prevent stripping or improper bolt preload.
Material Traceability: Full material certs and third-party reports ensure material authenticity
Bubble-tight Sealing: Tri-eccentric design with hardened metal seals (Stellite alloy) achieves API 598 bubble-tight zero leakage.
Pinless Design: Pinless stem/disc connection eliminates pin failure risks, ensuring reliable high-torque performance.
Design and Manufacture: ASME B16.34; ASME VIII; API 609:AS2129 JISB2220
Leakage Class: API 598 ( Bi-directional Zero Leakage); ISO 5208 Rate A, FCI 70-2 Class V/VI
Side Flange Standards: ANSI125LB/ 150LB/ 300LB/ 600LB/ 900LB/ 1200LB/ 1800LB; ASME; AS-D/E; BS; DIN; EN PN6/ PN10/ PN16/ PN25/ PN64/ PN100/ PN150; GB; GOST; HG/T; JIS 5K/ 10K/ 16K
Top Flange (Actuator Mounting): ISO 9001; GB90°
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: API 609; API 598; CE; ISO 9001; EAC; SIL3；
Technical description
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Q&A
Specification of the Valve |
|
|---|---|
| Type of Connection |
Lug (NPT/Through Hole Connection) Fully tapped bolt holes allow the valve to be used in dead-end service. (Also available in Wafer and Double Flanged types) |
| Actuation | • Bare Stem: With mounting flange per ISO 5211 • Manual: Hand Lever, Worm Gearbox • Automated: Pneumatic Actuator (Double Acting/Spring Return), Electric Actuator |
| Size |
1 1/2in~108in (DN40~DN2700+) Larger sizes available upon request. |
| Pressure |
PN10~PN400 (Class150 ~ Class2500） |
| Testing Pressure | 928psi |
| Medium | Water, Oil, Natural Gas (ONG), Steam, Cryogenic Fluids, Corrosive Chemicals, Slurry, etc. |
| Medium temperature |
-196℃~800℃ (-320°F to +1472°F) Material Dependent |
Material of the Valve |
|
|---|---|
| Body |
Austenitic Stainless Steel: ASTM A351 CF8 (304), CF8M (316), CF3 (304L), CF3M (316L), CN7M (Alloy 20) Super Austenitic SS: ASTM A351 CK3MCuN (1.4529 / Alloy 926 eq.) Duplex & Super Duplex SS: ASTM A995 4A (CD3MN / Duplex 2205), 5A (CE3MN / Super Duplex 2507) Note: Other materials like Carbon Steel (WCB), Low-Temp Carbon Steel (LCC/LCB), and Nickel Alloys are also available. |
| Disc |
Austenitic Stainless Steel: ASTM A351 CF8, CF8M, CF3, CF3M Duplex & Super Duplex SS: ASTM A995 4A (CD3MN), 5A (CE3MN) Super Austenitic SS: ASTM A351 CK3MCuN (1.4529) Aluminum Bronze: ASTM B148 C95400, C95800 Nickel Alloys: ASTM A494 CW6MC (Hastelloy C-276 eq.), M35-1 (Monel 400 eq.) Ductile / Cast Iron: ASTM A536 65-45-12 (DI), ASTM A126 Cl.B (CI) — For specific, less demanding applications. |
| Stem |
Carbon Steel: 45# / 1045 Martensitic Stainless Steel: SS410 / F6a / SS420 Austenitic Stainless Steel: SS304 / F304 / SS316 / F316 / SS316L / F316L Super Austenitic Stainless Steel: 6Mo / 1.4529 Precipitation-Hardening Stainless Steel: 17-4PH Duplex & Super Duplex Stainless Steel: Duplex 2205 / F51 / Super Duplex 2507 / F55 Nickel Alloys: Monel K500 / Hastelloy C-276 / Inconel 625 |
| Body Seat | Integral Seat: Machined directly into the valve body. Hardfaced Seat: Body seat overlaid with wear-resistant material (e.g., Stellite 6, 21). |
| Disc Seal Ring | Laminated Seal: Multiple layers of metal and flexible graphite for zero-leakage performance. (e.g., SS316+Graphite, Duplex+Graphite, Inconel+Graphite). Solid Metal Seal: Single-piece solid metal ring for high-temperature or abrasive services. |
With over 20 years of experience, our reputation is forged from deep material expertise and precision engineering. We control the entire manufacturing process, from raw casting to final assembly, ensuring every valve meets our uncompromising standards for performance and reliability.
As a company founded by casting experts, we guarantee material integrity. We use 100% PMI testing to verify alloys, ensuring every valve body and disc strictly adheres to ASTM/EN standards for optimal performance.
Our advanced 5-axis CNC centers ensure every component's dimension is machined to exact specifications. This precision is critical for the perfect geometry of our triple-offset design, guaranteeing a frictionless, torque-seated, zero-leakage seal.
With two decades of field validation across the globe, our valve designs are not just theoretical—they are proven to be rational and reliable. Our extensive experience means our products deliver consistent, trustworthy performance in the world's most demanding applications.
Precision is not an option; it's a requirement. Our investment in world-class machining equipment ensures every valve component meets exacting tolerances for superior performance.
The following are the representative application industries of this valve. Since butterfly valves can be applied to almost all industries (as long as the temperature and pressure are in line), many industries have not been listed.
Our triple offset eccentric butterfly valve provides MTC 3.1 certifications compliant with ASTM/ASME standards, ensuring precise chemical composition and mechanical properties. For sour service environments, valves meet NACE MR0175/ISO 15156 requirements. Critical components undergo 100% PMI testing for material authenticity.
Our high temperature butterfly valve series achieves ANSI Class V sealing under steam conditions, maintaining zero leakage after 10,000 thermal cycles. Stellite alloy overlay (HRC 40-60) on sealing surfaces ensures erosion and thermal shock resistance.
Our lug type water butterfly valve features pressure-bearing ear design allowing downstream equipment maintenance without system depressurization. This lug-style configuration simplifies maintenance procedures when used as end-of-line valves.
ISO 5752-compliant short-length tri eccentric butterfly valve (as short as 1.5D) optimize space utilization on vessels. Custom lengths are available to meet specific onboard installation requirements.
JRVAL, as a china stainless butterfly valve manufacturer, offer ISO 15848-1 certified valves with <50 ppmv fugitive emissions for VOC control systems.
JRVAL, as one of sanitary butterfly valves manufacturers, provide easy disassembly/cleaning triple offset butterfly valve with lug-type design. Full compliance with ISO/DIN/SMS/BS sanitary standards for hygienic connections.
Tricentric triple offset butterfly valve with multi-stage labyrinth seals and hard alloy bearings prevent abrasive slurry intrusion. The composite bearing materials extend service life in harsh mining environments.
ASME butterfly valve with anti-static design ensures safe operation with flammable refrigerants (e.g., ammonia). Cleanroom assembly prevents oil contamination.
Triple eccentric valve in super duplex 2507 (PREN>40), Hastelloy or titanium resists chloride corrosion for seawater systems.
A leading chemical processing plant was facing constant, unscheduled shutdowns. The generic butterfly valves on their high-pressure, corrosive media line were failing prematurely. Leaks were not only causing millions in product loss and environmental cleanup costs but also posed a significant safety risk to personnel, damaging the company's reputation as a safe operator.
Instead of a one-size-fits-all approach, JRVAL’s engineers collaborated directly with the plant’s team. Through material analysis and process understanding, we designed a custom solution: a Triple Eccentric Butterfly Valve featuring a Super Duplex 2507 body for superior corrosion resistance and a proprietary, multi-laminated Duplex+Graphite seal ring, engineered specifically to withstand the plant's unique combination of pressure and chemical aggression.
"We were replacing valves every six months. With JRVAL's solution, we've had 24 months of continuous, zero-leakage operation. They didn't just sell us a valve; they engineered our plant's reliability."
Our commitment to world-class quality is not just a promise. It is verified by internationally recognized standards, providing you with the documentation and peace of mind you need.
Ready to configure for your project?
Yes. Our lug-type bodies are FEA-validated and rigorously pressure-tested to exceed their ratings. The design ensures robust integrity and uniform load distribution for absolute high-pressure reliability.
No. Our triple-eccentric design provides frictionless opening for low torque. While secure metal-to-metal sealing requires firm closure torque, we provide exact values for easy and accurate actuator selection.
Pinless connections (e.g., keyways or splines) create a solid, single-piece stem-disc unit. This eliminates potential shear failure under high torque, guaranteeing superior reliability, precise sealing, and long-term operational stability.
No. We use hardened, wear-resistant materials like Stellite overlays. Combined with our frictionless triple-eccentric design, this ensures minimal wear and a service life that far exceeds standard soft-seated valves.
Absolutely. Depending on the design and level of damage, sealing surfaces can be fully reconditioned in-shop, or the seal rings can be easily replaced on-site, extending the valve's total lifecycle and value.
Compare our quality against other brands firsthand. We are confident you will be satisfied after an in-depth investigation of our products.
We provide an extensive warranty covering defects for 2 to 30 years. Valve body, disc, and seat are all available for replacement if you ever need them.
Before delivery, we provide a full documentation package, 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
Copyright @ 2025. Tianjin Jiangrui Steel Casting Co., Ltd.
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