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China Lug Butterfly Valve with Handle - Quality Suppliers from Trusted Factory
Product Details
Lug butterfly valve is suitable for applications where the valve needs to be installed between two flanges. The valve is designed with lugs that allow it to be bolted onto the flanges, providing a secure connection. The another type — wafer butterfly valve — is suitable for applications where the valve needs to be installed between two pipes. The valve is designed with a wafer that allows it to be sandwiched between the pipes, providing a tight seal.
In several common connection ways of butterfly valves, the price of wafer type is the cheapest, followed by lug type butterfly valve; flange type butterfly valve is the most expensive — the price is proportional to the overall weight. Contact Fluido to learn more about lug butterfly valve with handle and its applications.
The dimensions of the Lug butterfly valve with handle are described in the table below.
★ Key Features
🔒
Anti-Blow Out Stem
⇄
Bi-Directional
🔥
Fire Safe Design
⚙
Low Friction Body Seat
✅ Standard Test
Body Test: 1.5 times the working pressure with water. This test is performed after valve assembly and with disc in half position open; it is called as a body hydro test.
Seat Test: 1.1 times the working pressure with water.
Function / Operation Test: At the time of final inspection, each valve and its actuator (Flow-Control Lever / Gear / Pneumatic Actuator) undergoes a complete operating test (Open/Close). This test is carried out without pressure and at ambient temperature. It ensures the correct operation of the valve / actuator assembly with accessories such as solenoid valve, limit switches, air filter regulator etc.
Special Test: On request, any other test can be carried out according to special instruction by client.
Specification
🔧 Parts & Materials
| No. | Part Name | Material |
|---|---|---|
| 1 | Body | SS316 / SS304 |
| 2 | Hex Nut | SS304 |
| 3 | Gasket | SS304 |
| 4 | Seat | PTFE |
| 5 | Ball | SS316 / SS304 |
| 6 | Stem | SS316 / SS304 |
| 7 | Stem Gasket | PTFE |
| 8 | Packing | PTFE |
| 9 | Gland | SS304 |
| 10 | Handle | SS201 |
| 11 | Spring Washer | SS304 |
| 12 | Nut | SS304 |
📏 Dimensions (DIN / ASME)
| SIZE | HA | HB | HC | L | Φ A | DIN PN16 | ASME B16.1 | |||
|---|---|---|---|---|---|---|---|---|---|---|
| DN | INCH | Φ C | n - M | Φ C | n - M | |||||
| 50 | 2" | 66 | 130 | 30 | 43 | 12.7 | 125 | 4-M16 | 129.5 | 4-5/8" |
| 65 | 2-1/2" | 75 | 140 | 30 | 46 | 12.7 | 145 | 4-M16 | 139.5 | 4-5/8" |
| 80 | 3" | 95 | 150 | 30 | 46 | 12.7 | 160 | 8-M16 | 152.5 | 4-5/8" |
| 100 | 4" | 108 | 170 | 30 | 52 | 15.8 | 180 | 8-M16 | 190.5 | 8-5/8" |
| 125 | 5" | 120 | 185 | 30 | 56 | 19.1 | 210 | 8-M16 | 216.0 | 8-3/4" |
| 150 | 6" | 134 | 205 | 30 | 56 | 19.1 | 240 | 8-M20 | 241.5 | 8-3/4" |
| 200 | 8" | 168 | 235 | 36 | 60 | 22.2 | 295 | 12-M20 | 298.5 | 8-3/4" |
| 250 | 10" | 200 | 270 | 36 | 68 | 28.6 | 355 | 12-M24 | 362.0 | 12-7/8" |
| 300 | 12" | 237 | 305 | 36 | 78 | 31.8 | 410 | 12-M24 | 432.0 | 12-7/8" |
| 350 | 14" | 262 | 330 | 36 | 78 | 31.8 | 470 | 16-M24 | 476.0 | 12-1" |
| 400 | 16" | 300 | 360 | 51 | 102 | 33.3 | 525 | 16-M27 | 539.5 | 16-1" |
| 450 | 18" | 350 | 395 | 51 | 114 | 38.0 | 585 | 20-M27 | 578.0 | 16-1-1/8" |
| 500 | 20" | 375 | 440 | 64 | 127 | 41.2 | 650 | 20-M30 | 635.0 | 20-1-1/8" |
| 600 | 24" | 435 | 500 | 71 | 154 | 50.7 | 770 | 20-M33 | 749.5 | 20-1-1/4" |
* All dimensions are in mm unless otherwise specified.
* DIN bolting dimensions are in conformance to EN1092-1.
Frequently Asked Questions
❓
What is the difference between a lug butterfly valve and a wafer butterfly valve?
A lug butterfly valve features threaded inserts (lugs) around its body that allow it to be bolted directly between two flanges without requiring nuts on both sides, making it suitable for dead-end service. A wafer butterfly valve is sandwiched between two pipe flanges using through-bolts, providing a compact and cost-effective solution but not suitable for dead-end isolation.
❓
What materials are available for the lug butterfly valve body?
The valve body is available in SS316 and SS304 stainless steel. Seat materials include PTFE for chemical resistance and low friction, while stems and related components are also crafted from SS316 or SS304 for durability and corrosion resistance.
❓
What size range does the lug butterfly valve with handle cover?
The lug butterfly valve with handle is available in sizes ranging from DN50 (2 inch) up to DN600 (24 inch), covering both DIN PN16 and ASME B16.1 flange drilling standards to suit a wide range of industrial piping systems.
❓
What standard tests are performed on the lug butterfly valve?
Each valve undergoes a Body Hydro Test at 1.5× working pressure, a Seat Test at 1.1× working pressure, and a full Function / Operation Test (Open/Close cycle) at ambient temperature without pressure. Special tests can also be arranged upon customer request.
❓
Is the lug butterfly valve bi-directional?
Yes. The lug butterfly valve is designed to be bi-directional, meaning it can control or shut off flow from either direction. This makes installation more flexible and reduces the risk of incorrect orientation during setup.
❓
Can the lug butterfly valve be fitted with an actuator instead of a handle?
Yes. In addition to the standard lever handle, the lug butterfly valve can be equipped with a gear operator, pneumatic actuator, or electric actuator. Each actuator assembly is function-tested before shipment to ensure correct open/close operation along with accessories such as solenoid valves, limit switches, and air filter regulators.
Product Packaging
01020304