Precision multi-national flange standards compatibility; strict thread hole control via go/no-go gauge inspection for reliable connections.
Space-optimized compact design (award-winning): minimizes valve body profile while exceeding structural strength standards for tight spaces.
Premium raw steel finish with corrosion-resistant coating; deep-cast permanent markings for full traceability (material, pressure, heat number).
Design and Manufacture: ASME B16.34; ASME VIII; API 609:AS2129 JISB2220
Side Flange Standards: ANSI 125LB/150LB; ASME; AS-D/E; BS PN10/16; DIN PN10/16; EN PN6/10/16/25; GB PN6/10/16; GOST 33259; HG/T PN6/10/16/25; JIS 5K/10K
Top Flange (Actuator Mounting) : ISO 5211; GB 90°
Face-to-Face Dimension: ISO 5752; ASME B16.10; EN 588-1
Testing Standards: API 598; EN 12266-1; ISO 5208
Certifications: ISO 9001; CE; BV; API 609; API 598; EAC; SIL3；
Technical description
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Q&A
Specification of the Valve |
|
|---|---|
|
Type of Connection |
Lug (NPT/ Through Hole Connection) |
|
Actuation |
Lever |
|
Size |
1 1/2in ~ 8in (DN40~DN200) |
|
Pressure |
10bar~20bar (1.0mpa~2.0mpa) |
|
Testing Pressure |
256psi |
|
Medium |
Water/Oil/Air |
|
Medium Temperature |
-25℃~180℃ |
Material of the Valve |
|
|---|---|
|
Body |
WCB/WCC/ LCB/ LCC/ LC1 |
|
Disc |
DI/ CF8/ CF8M/ CF3/ CF3M/ 2205/ 2507/ 1.4529/ HC276/ C95400/ C95800 |
|
Stem |
45#/ SS410/ SS416/ SS420/ SS304/ SS316/ SS316L/ 17-4/ 2205/ 2507/ 1.4529/ K500/ CF8/ CF8M/ HC276 |
|
Seat |
EPDM/ NBR/ SIL/ FKM/ FPM/ VITON/ PTFE/ HYPALON |
|
Coating |
Epoxy Resin 200um ~ 250um |
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.
Lug type butterfly valves with advanced coatings (epoxy/nickel) enhance corrosion resistance for petrochemical use, handling sulfur crude and acid/alkaline media.
Lug butterfly valves for power generation use bolt-fixed flanges, preventing loosening under high pressure/vibration, ensuring stability in critical systems
Water butterfly valves (lug type) offer zero-leakage soft seals for clean water and durable hard seals for abrasive media, ensuring reliability in municipal water systems
Carbon steel lug butterfly valves offer significant cost savings for large-scale shipbuilding, with a short neck design ideal for confined spaces.
Lug type valves for environmental protection feature metal hard seals and self-lubricating bushes, ensuring extended jam-free operation and minimal leakage.
Sanitary butterfly valves (handle type) feature zero-friction design for extended life and food-grade linings, ensuring FDA/3A compliance for food processing.
Carbon steel butterfly valves for mining feature wear-resistant alloy coatings and anti-corrosion hardfacing, ideal for abrasive slurries and particle-laden media
Cryogenic butterfly valves with anti-freezing stem prevent seizing at low temperatures, offering high strength (PN10-PN20) for refrigerants/cold water systems
Carbon steel Marine butterfly valves are cost-effective for seawater desalination, offering enhanced corrosion resistance via specialized coatings and durable seats
Teflon lined butterfly valves with specialized PTFE composite coatings offer superior corrosion resistance for chloride/H2S media.
Centerline butterfly valves with WC-sprayed disc reduce wear 5x (0-80℃, ≤10ppm leakage).
Fully lugged butterfly valve with ASME B16.5 flanges resists bolt loosening under 2.5MPa shock.
Our compact lug type butterfly valves with patented short neck design facilitate easy installation in ultra-narrow spacesrfly valvE.
Lug type cryogenic butterfly valves offer anti-deformation sealing and low maintenance for LNG/air separation, ensuring reliable operation in large, frequently used pipelines.
Wafer lug type butterfly valve enables multi-angle rotation (0-180°) for complex piping, reducing retrofit time by 30%
Lever operated butterfly valve with SF-1 bearings reduces 60% torque (1M+ cycles).
PTFE lined butterfly valve achieves zero contamination via FDA-grade PTFE seals & full-welded body (ISO 9001)
Cost-effective carbon steel HVAC butterfly valves offer suitable pressure ratings (1.0-2.5MPa) at 30-50% less cost than stainless, ideal for budget-sensitive HVAC system suppliers.
Full lug butterfly valve with welded body prevents freeze cracks at -30℃ (EN 12266 tested).
Carbon Steel lug body butterfly valve ensure strict sealing and eliminate static accumulation risks, crucial for safe operation in combustible gas systems.
Carbon steel high-temp butterfly valve accommodate wide temperature ranges (-29°C to 425°C), ensuring stable performance in heating systems with appropriate seat materials .
“Valve failure during Siberian deep freezes was a constant, costly problem. Since installing these, we’ve had zero fractures and zero downtime. Their reliability in these extreme conditions is simply unmatched. A truly robust solution.”Read the Case: When Extreme Cold Becomes the Norm, We Cast Unfreezing Joints for the Pipes →
Q: Your “Carbon Steel Lug Handle Butterfly Valve” design won the Utility & Aesthetics First Prize. For our extremely cramped pipe gallery space, might handle operation still be problematic? |
A: Our award-winning design specifically addresses spatial constraints through intensive optimization. The compact valve body coupled with handle engineering features: • Precisely calculated handle length/pivot angle minimizing swing radius • Ergonomic contouring for torque-efficient operation • Full-open position clearance <150mm from pipe wall This ensures reliable operation even in 600mm-wide maintenance corridors. |
Q: Your “Go/No-Go gauge verified threaded holes with metric threads” - does this resolve mixed flange standards in our pipeline? |
A: Multi-standard compatibility solution: • Flange face types support RF & FF hybrid configurations • Threaded holes machined to ISO 724 standard (tolerance class 6H) • Go/No-Go gauge inspection covers ISO/DIN/GB thread parameters Special applications can provide DIN 2501 PN10 and GB/T 9115 transition flanges |
Q: Can we specify carbon steel grades like Q235B or ASTM A105 under your “Material Guarantee”? |
A: Standard valve bodies utilize ASTM A216 WCB or equivalent. While Q235B (structural steel) and A105 (wrought) differ from casting specifications, we accommodate special requests including cryogenic grades (e.g., A352 LCB/LCC for -46°C service). State your requirements for feasibility assessment. |
Q: How do JRVAL’s lug strength and threaded connections ensure reliability in end-of-line single-sided pressure applications? |
A: Our reinforced lug design withstands full pipeline pressure and bending moments in end-line installations. Combined with precision-machined threads (Go/No-Go verified) and proper bolt selection, we guarantee leak-free performance under unilateral loading. |
Q: What information is permanently marked? Can utility tunnel-specific asset IDs be added? |
A: Standard markings: JRVAL logo, model, DN/PN, material, heat number. Custom laser-engraved asset IDs, pipeline codes, QR codes, etc., are available for lifecycle management compliance. |
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 Industry
Lug type butterfly valves with advanced coatings (epoxy/nickel) enhance corrosion resistance for petrochemical use, handling sulfur crude and acid/alkaline media.
Power Generation Industry
Lug butterfly valves for power generation use bolt-fixed flanges, preventing loosening under high pressure/vibration, ensuring stability in critical systems
Municipal Water Supply Industry
Water butterfly valves (lug type) offer zero-leakage soft seals for clean water and durable hard seals for abrasive media, ensuring reliability in municipal water systems
Marine/Shipbuilding Industry
Carbon steel lug butterfly valves offer significant cost savings for large-scale shipbuilding, with a short neck design ideal for confined spaces.
Environmental Protection Industry
Lug type valves for environmental protection feature metal hard seals and self-lubricating bushes, ensuring extended jam-free operation and minimal leakage.
Food Processing Industry
Sanitary butterfly valves (handle type) feature zero-friction design for extended life and food-grade linings, ensuring FDA/3A compliance for food processing.
Metallurgical Industry
Carbon steel butterfly valves for mining feature wear-resistant alloy coatings and anti-corrosion hardfacing, ideal for abrasive slurries and particle-laden media
Refrigeration Industry
Cryogenic butterfly valves with anti-freezing stem prevent seizing at low temperatures, offering high strength (PN10-PN20) for refrigerants/cold water systems
Seawater Desalination Industry
Carbon steel Marine butterfly valves are cost-effective for seawater desalination, offering enhanced corrosion resistance via specialized coatings and durable seats
Corrosive Environments
Teflon lined butterfly valves with specialized PTFE composite coatings offer superior corrosion resistance for chloride/H2S media.
Particle Wear Environment
Centerline butterfly valves with WC-sprayed disc reduce wear 5x (0-80℃, ≤10ppm leakage).
Prone to Oscillating Environments
Fully lugged butterfly valve with ASME B16.5 flanges resists bolt loosening under 2.5MPa shock.
Space-Constrained Environments
Our compact lug type butterfly valves with patented short neck design facilitate easy installation in ultra-narrow spacesrfly valvE.
Cryogenic Environments
Lug type cryogenic butterfly valves offer anti-deformation sealing and low maintenance for LNG/air separation, ensuring reliable operation in large, frequently used pipelines.
Densely Routed Industrial Piping Environments
Wafer lug type butterfly valve enables multi-angle rotation (0-180°) for complex piping, reducing retrofit time by 30%
Water Supply Systems
Lever operated butterfly valve with SF-1 bearings reduces 60% torque (1M+ cycles).
Semiconductor Ultra-Pure Water Systems
PTFE lined butterfly valve achieves zero contamination via FDA-grade PTFE seals & full-welded body (ISO 9001)
HVAC Systems
Cost-effective carbon steel HVAC butterfly valves offer suitable pressure ratings (1.0-2.5MPa) at 30-50% less cost than stainless, ideal for budget-sensitive HVAC system suppliers.
Wastewater Systems
Full lug butterfly valve with welded body prevents freeze cracks at -30℃ (EN 12266 tested).
Gas Systems
Carbon Steel lug body butterfly valve ensure strict sealing and eliminate static accumulation risks, crucial for safe operation in combustible gas systems.
Heating Systems
Carbon steel high-temp butterfly valve accommodate wide temperature ranges (-29°C to 425°C), ensuring stable performance in heating systems with appropriate seat materials .
“Valve failure during Siberian deep freezes was a constant, costly problem. Since installing these, we’ve had zero fractures and zero downtime. Their reliability in these extreme conditions is simply unmatched. A truly robust solution.”Read the Case: When Extreme Cold Becomes the Norm, We Cast Unfreezing Joints for the Pipes →
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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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