Designed as Standard : GB/T12238-2008; AWWA C504
Face to Face : GB/T12221-2005-J1; API609(400/450 Excepted)
Flange as Standard : GB/T17241.6 ; DIN2632/2633;BS4504;
JIS-B2220 ; ASME B16.5(150LB)
Test as Standard : GB/T13927-2008; BS EN12266-1 12266-2

Material & Specifications:
| Design & Manufacture | ISO5211 EN593 API609 BS5155 EN1092 |
| Face to Face | ISO5752 DIN558-1 API609 DIN3202 BS5155 |
| Inspection & Testing | ISO5208 EN12266-1 API598 |
| Working Pressure | PN10 PN16 |
| Working Temperature | NBR(0~70ºC) |
| EPDM(0~120ºC) | |
| PTFE(-20~120ºC) | |
| FKM(0~260ºC) | |
| SILICO(-40~180ºC) | |
| Operating mode | Lever, Hand wheel, Gear box, Pneumatic/Electric actuators |
| Applicable medium | Water, oils, Chemicals, Foodstuff, Medicament, Gas etc. |
| Application field | Water supply and drainage, Water conservancy projects, Building project, Food and beverage, Chemical industry, Petroleum industry, Dry powder and Gas plants etc . |
Features:
As a leading industrial valve manufacturer, TWIV FLUID VALVE delivers high-performance flow control solutions worldwide. Our lug style butterfly valve line is specifically engineered for dead-end service and bidirectional pressure applications, ensuring secure bolt-tight sealing between pipe flanges.
Our heavy-duty 4 lug style butterfly valve features a robust body design with precisely tapped lug holes, making it highly requested for HVAC, water treatment, and industrial pipeline projects. Designed for quick manual control, the butterfly valve lever type provides operators with smooth, reliable quarter-turn throttling performance. Each butterfly lever mechanism is ergonomically manufactured with locking notches to secure exact disc positioning under high-flow media conditions.
Every lug type butterfly valve from our facility undergoes strict pressure testing and complies with international standards, including API 609 and DIN. With premium materials like ductile iron bodies and stainless steel discs, our valves ensure zero-leakage durability. Partner with TWIV FLUID VALVE for factory-direct wholesale pricing, extensive inventory, and OEM/ODM customizations for your project specifications. Contact our engineering sales team today to request a rapid quotation or technical catalog.