Material Traceability: Full material certs and third-party reports ensure material authenticity
Pinless Design: Pinless stem/disc connection eliminates pin failure risks, ensuring reliable high-torque performance.
Replaceable Seat & Seal extend the valve's service life, minimizing downtime, and avoiding costly off-site repairs or full valve replacement.
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 Flange Type Valve |
|
|---|---|
| Type of Connection |
Flange (Also available in Wafer and Lug 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 | API 598, e.g., 928psi for Class600 |
| 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. |
Our Triple Offset Flanged Butterfly Valves are engineered for critical service across a wide range of industries where zero-leakage and high performance are non-negotiable.
As an API 609 category butterfly valve, it provides bi-directional, zero-leakage shutoff in refining processes. The tricentric triple offset butterfly valve design excels in high-temperature catalytic cracking and hydrocarbon processing.
Our cryogenic triple offset butterfly valve is specifically designed for LNG storage and transportation. An extended bonnet and specialized materials ensure reliable performance and bubble-tight sealing down to -196°C.
The robust metal-to-metal seal on our high temperature butterfly valve makes it ideal for main steam isolation, turbine bypass, and geothermal steam applications, withstanding extreme thermal cycles.
In desalination and water treatment, this triple eccentric valve, often specified in Super Duplex, offers superior corrosion resistance. It serves as a reliable water butterfly valve for both isolation and control.
As a leading China stainless steel butterfly valve factory, we offer valves in a range of alloys (e.g., Hastelloy, Inconel) to handle corrosive media, ensuring plant safety and longevity with zero leakage.
The unique camming action of the butterfly valve eccentric type lifts the seal away from the seat, preventing wear in abrasive services like pulp & paper effluent or mining slurry, making it a superior butterfly valve for slurry application.
"We replaced the failing valves on our main reverse osmosis intake line with JRVAL's super duplex triple offset valves. The result? 18 months of continuous operation, zero pressure drop, zero leakage. This isn't just a valve; it's plant reliability."
JRVAL is the source factory for the production of steel butterfly valves, integrating casting, precision machining, and assembly under one roof. With 20 years of market-proven performance, our reliability is a fact, not a promise. Our origins in casting ensure we control material integrity and machining precision from start to finish, guaranteeing every valve meets the highest standards.
Our commitment to quality is validated by internationally recognized certifications.
In-house advanced CNC machining centers ensure every component is manufactured with unparalleled precision for flawless performance.
Ready to configure for your project?
Find answers to common questions about our Triple Offset Butterfly Valves, their design, and performance advantages.
As a source factory controlling the entire production chain, we provide full material traceability. Every valve is supplied with Material Test Reports (MTRs) to EN 10204 3.1, and we can provide Positive Material Identification (PMI) and other third-party inspection reports upon request to ensure authenticity.
Traditional pinned connections are a common failure point under high torque or vibration. Our pinless design creates a solid, high-strength connection between the stem and disc. This eliminates the risk of pin failure, ensures reliable torque transmission, and significantly enhances the valve's long-term operational safety and reliability.
Yes. Both the body seat and the laminated disc seal ring are fully replaceable on-site. This feature is crucial for minimizing operational downtime and reducing total cost of ownership. It allows for quick, cost-effective maintenance without the need for off-site repairs or full valve replacement, extending the valve's service life indefinitely.
The triple offset geometry creates a unique cam-like action that moves the disc seal off the body seat almost instantly. This eliminates friction and wear during opening and closing, which is the key to achieving a durable, repeatable, bi-directional zero-leakage seal (ISO 5208 Rate A) even in high-cycle, high-pressure, and high-temperature services.
Yes, but with specialized configurations. Our core triple offset design is the foundation. For high temperatures (up to 800°C), we use specific alloys and laminated graphite seals. For cryogenic services (down to -196°C), we use austenitic stainless steels, a cryogenic extended bonnet to protect the packing, and materials proven for low-temperature toughness.
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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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