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
Side Flange Standards: ANSI125LB/150LB/300LB/600LB/900LB/1200LB/1800LB; ASME; AS-D/E; BS PN10/16; DIN PN10/16; EN PN6/10/16/25; GB PN6/10/16; GOST ; HG/T PN6/10/16/25; JIS 5K/10K/16K
Top Flange (Actuator Mounting): ISO 9001; GB90°
Face-to-Face Dimension: ISO 5752; ASME B16.10; EN 588-1
Testing Standards: API 598; EN 12266-1; ISO 5208
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 |
| Actuation | Round/ Square Head/ Hand Lever/ Worm Gear/ Pneumatic/ Electric |
| Size |
1 1/2in~112in (DN40~DN2800+) |
| Pressure |
25bar~360bar (2.5mpa~36.0mpa) |
| Testing Pressure | 928psi |
| Medium | Water/Oil/Air |
| Medium temperature | -196℃~800℃ |
Material of the Valve |
|
|---|---|
| Body | CF8/ CF8M/ CF3/ CF3M/ 2205/ 2507/ 1.4529/ 1.4406 |
| Disc | DI/ CF8/ CF8M/ CF3/ CF3M/ 2205/ 2507/ 1.4529/ HC276/ C95400/ C95800 |
| Shaft | 45#/ SS410/ SS416/ SS420/ SS304/ SS316/ SS316L/ 17-4/ 2205/ 2507/ 1.4529/ K500/ CF8/ CF8M/ HC276 |
| Seat | EPDM/ NBR/ SI/ FKM/ FPM/ VITON/ PTFE/ RPTFE/ HYPALON |
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.
JRVAL’s high temp butterfly valve employs multi-layer graphite + stainless steel composite seals or full metal seals (e.g., Stellite alloy monolithic or overlay coatings), ensuring tight shutoff under extreme conditions. It meets API 598 zero leakage and ANSI/FCI 70-2 Class V/VI standards, making it ideal for high-temperature industrial applications.
JRVAL’s cryogenic triple offset butterfly valve is engineered with specialized composite seals (e.g., PCTFE + metal backing or multi-layer metal bellows + graphite), achieving ISO 5208 Rate A performance even at -196°C. This makes it a top choice for cryogenic systems like LNG storage.
For aggressive media, China stainless steel butterfly valve factory guarantees zero leakage with solid-body triple eccentric butterfly valve design, featuring full alloy seats (e.g., 254SMO) or PFA/PTFE coated elastic cores. This ensures long-term corrosion resistance in 98% sulfuric acid.
JRVAL’s triple offset butterfly valve lug type features customizable hardened sealing surfaces, including HVOF WC-CoCr ceramic coatings (for severe wear, with >70MPa bond strength) and ZTA ceramic disc options. These ensure durability in abrasive flows.
JRVAL’s triple offset butterfly valve lug type design ensures uniform bolt loading and enhanced connection stability, enabling reliable operation under continuous 5G vibrations.
Our butterfly valves are equipped with actuator flanges that comply with the ISO 5211 standard, facilitating rapid integration with compact actuators. Moreover, as one of the wholesale stainless steel butterfly valve suppliers, JRVAL can provide ultra-short structural length butterfly valves or special flange connections, and support customized requirements.
JRVAL’s CFD-optimized triple offset butterfly valve minimizes pressure drop with streamlined disc and flow paths, reducing energy consumption. Some models also provide precise flow control for efficient system management.
JRVAL’s triple eccentric butterfly valve for slurry application features an enhanced scraping effect during opening, preventing fiber or sludge buildup on sealing surfaces. It maintains ISO 5208 Rate A/B leakage standards in gritty wastewater.
All components of the china sanitary butterfly valve—including fasteners—are subjected to multi-stage oil-free degreasing, ultra-pure water (DI water) rinsing, and assembly in Class 100/10 cleanroom environments. The valves undergo double-layer vacuum packaging to ensure zero particulate or microbial contamination during transportation and storage.
JRVAL's API 609 category butterfly valve (triple eccentric type) adopts a metal-to-metal sealing structure, ensuring normal operation and meeting leakage standards after burning in a flame of 760°C-980°C for 30 minutes.
JRVAL’s triple offset butterfly valve ss304 achieves bubble-tight sealing, minimizing energy loss from refrigerant or hot air leakage. Compared to midline butterfly valves, it reduces HVAC system energy consumption by up to 30%.
Our headless design of butterfly valve eccentric type is easy to integrate with various explosion-proof electric and pneumatic actuators, enabling remote control and linkage with gas monitoring systems. Customized services such as ultra-short structural lengths and special flange connections can be provided according to the special installation requirements underground.
Q: For lug-type wafer valve bodies, is the structural integrity sufficient under high-pressure conditions? |
A: The design of lug-type wafer valve bodies is proven and reliable. Their structural strength has been validated through finite element analysis and rigorous pressure testing. Both the valve body wall thickness and lug configuration meet the requirements of corresponding pressure ratings. The 2-lug or multi-lug design also facilitates uniform bolt arrangement and load distribution. |
Q: Does this metal-seated valve require excessive operating torque? |
A: Triple eccentric butterfly valves exhibit relatively low operating torque due to their immediate seal disengagement during opening, which minimizes friction. However, metal-to-metal sealing with zero-leakage requirements still necessitates moderate torque during closure. We provide precise torque specifications to facilitate proper actuator selection. |
Q: What are the specific advantages of pinless connections in triple eccentric butterfly valves? |
A: For triple eccentric butterfly valves requiring high torque transmission and exceptional reliability, non-pin connection methods (e.g., keyways or splined joints) ensure integral rigidity between the stem and disc. This eliminates potential shear failure or loosening of pins under high stress loads, thereby guaranteeing sealing precision and long-term operational stability. |
Q: Are the metal sealing surfaces prone to wear? What is their service life? |
A: Our metal sealing surfaces employ high-hardness wear-resistant materials (e.g., precision-ground Stellite overlay welding). The triple eccentric design achieves frictionless opening/closing, significantly reducing wear. Under normal operating conditions, their service life substantially exceeds that of soft-seated valves with minimal maintenance requirements. |
Q: Can damaged sealing surfaces be reconditioned or replaced? |
A: Affirmative. Metal sealing surfaces can be refurbished through processes like re-overlay welding and precision grinding. Alternatively, seat/disc seal rings can be replaced in designs featuring replaceable sealing components, depending on the extent of damage and valve configuration. |
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.
Petrochemical & Chemical
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.
Power Generation Industry
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.
Municipal Water Supply Industry
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.
Marine/Shipbuilding Industry
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.
Environmental Protection Industry
JRVAL, as a china stainless butterfly valve manufacturer, offer ISO 15848-1 certified valves with <50 ppmv fugitive emissions for VOC control systems.
Food Processing Industry
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.
Mining & Metals Industry
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.
Refrigeration Industry
ASME butterfly valve with anti-static design ensures safe operation with flammable refrigerants (e.g., ammonia). Cleanroom assembly prevents oil contamination.
Desalination Industry
Triple eccentric valve in super duplex 2507 (PREN>40), Hastelloy or titanium resists chloride corrosion for seawater systems.
High-Temperature & High-Pressure Environments
JRVAL’s high temp butterfly valve employs multi-layer graphite + stainless steel composite seals or full metal seals (e.g., Stellite alloy monolithic or overlay coatings), ensuring tight shutoff under extreme conditions. It meets API 598 zero leakage and ANSI/FCI 70-2 Class V/VI standards, making it ideal for high-temperature industrial applications.
Low Temperature Environment
JRVAL’s cryogenic triple offset butterfly valve is engineered with specialized composite seals (e.g., PCTFE + metal backing or multi-layer metal bellows + graphite), achieving ISO 5208 Rate A performance even at -196°C. This makes it a top choice for cryogenic systems like LNG storage.
Corrosive Environment
For aggressive media, China stainless steel butterfly valve factory guarantees zero leakage with solid-body triple eccentric butterfly valve design, featuring full alloy seats (e.g., 254SMO) or PFA/PTFE coated elastic cores. This ensures long-term corrosion resistance in 98% sulfuric acid.
Abrasive/Slurry Environment
JRVAL’s triple offset butterfly valve lug type features customizable hardened sealing surfaces, including HVOF WC-CoCr ceramic coatings (for severe wear, with >70MPa bond strength) and ZTA ceramic disc options. These ensure durability in abrasive flows.
Vibration Environment
JRVAL’s triple offset butterfly valve lug type design ensures uniform bolt loading and enhanced connection stability, enabling reliable operation under continuous 5G vibrations.
Space-Constrained Environments
Our butterfly valves are equipped with actuator flanges that comply with the ISO 5211 standard, facilitating rapid integration with compact actuators. Moreover, as one of the wholesale stainless steel butterfly valve suppliers, JRVAL can provide ultra-short structural length butterfly valves or special flange connections, and support customized requirements.
Water Supply Systems
JRVAL’s CFD-optimized triple offset butterfly valve minimizes pressure drop with streamlined disc and flow paths, reducing energy consumption. Some models also provide precise flow control for efficient system management.
Wastewater Treatment Systems
JRVAL’s triple eccentric butterfly valve for slurry application features an enhanced scraping effect during opening, preventing fiber or sludge buildup on sealing surfaces. It maintains ISO 5208 Rate A/B leakage standards in gritty wastewater.
Semiconductor Ultrapure Water Systems
All components of the china sanitary butterfly valve—including fasteners—are subjected to multi-stage oil-free degreasing, ultra-pure water (DI water) rinsing, and assembly in Class 100/10 cleanroom environments. The valves undergo double-layer vacuum packaging to ensure zero particulate or microbial contamination during transportation and storage.
Fire Protection Systems
JRVAL's API 609 category butterfly valve (triple eccentric type) adopts a metal-to-metal sealing structure, ensuring normal operation and meeting leakage standards after burning in a flame of 760°C-980°C for 30 minutes.
HVAC Systems
JRVAL’s triple offset butterfly valve ss304 achieves bubble-tight sealing, minimizing energy loss from refrigerant or hot air leakage. Compared to midline butterfly valves, it reduces HVAC system energy consumption by up to 30%.
Fuel Gas Systems
Our headless design of butterfly valve eccentric type is easy to integrate with various explosion-proof electric and pneumatic actuators, enabling remote control and linkage with gas monitoring systems. Customized services such as ultra-short structural lengths and special flange connections can be provided according to the special installation requirements underground.
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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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