Lug butterfly valve is a type of quarter-turn valve that is ideal for regulating the flow of liquids or gases in industrial applications. It consists of a circular disc that rotates around a central axis within a pipe, controlling the flow of the medium. We offer a wide range of lug style butterfly valve designed for various industrial applications. Our valves are constructed using high-quality materials and meet industry standards such as ISO and API. Our lug type butterfly valve come in various sizes, materials, and configurations, including manual, electric, or pneumatic actuation. The valve’s lug design ensures easy installation and removal, making the valves ideal for piping systems that need regular maintenance.
The benefits of our lugged butterfly valve are numerous, such as precise flow control, low operating torque, and low-cost installation. The valves’ design makes them ideal for applications requiring bidirectional flow control or in applications with limited space. Our expert team of professionals works closely with trusted suppliers to source high-quality materials to build our butterfly valve lug type. Pov’s commitment to quality means our valves are simple to operate and long-lasting, providing maximum performance and productivity.
Contact us today to learn more about our range of lug type valve and how we can help you optimize the efficiency and productivity of your industrial processes.
FEATURES
1,ISO5211 top flange together with stem square suitable for direct mounting of actuators
2,Stem anti-blowout design keep safety in field use
3,Dirtscraper prevents moisture penetrating into the shaft area
4,Suitable for high pressure and full vacuum service due to the use of a cartridge seat design
5,Full rated unidirectional dead-end service is achieved by a lip designed in the lug body
6,No exposed pins or bolts for stem-to-disc connection
7,No need for flange gaskets
8,No risk of damage to the valve during installation in closed position
9,Bubble-tight shut of at full pressure rating
10,Large flow capacity and enough strength because of streamline disc design
11,Plug with O-ring sealing eliminates any leakage from the stem
PARTS LIST AND MATERIAL SPECIFICATION
TECHNICAL DATA
Body style
FLug
Nominal diameter
2″ – 80″ (DN50mm – DN2000mm)
Top flange
ISO5211
Operating pressure
16bar for DN50-DN300, 10bar for DN350-DN2200
Temperature range
-20 °C to + 140 °C (depending on pressure, medium and material)
Flange accommodation
EN 1092 PN 6/PN10/PN16
ASME Class 150
AS 4087 PN10/ PN16
JIS 5K/10K
Applications
Potable Water, Wastewater, Seawater, HVAC
Operation
Hand lever, gear box, pneumatic actuator, electric actuator
DIMENSIONS (mm)
SIZE
A
B
C
D
E
F
d
G
H
J
L
WT(kg)
DN
INCH
50
2″
126
78
13.5
117
9
50
8
70
31
34
43
2.8
65
2 1/2″
134
84
13.5
131
9
50
8
70
45
36
46
3.7
80
3″
138
92
13.5
176
9
50
8
70
64
36
46
5.1
100
4″
167
114
13.5
206
11
70
10
90
91
40
52
6.9
125
5″
180
129
17.5
236
14
70
10
90
110
44
56
9.3
150
6″
203
144
17.5
258
14
70
10
90
146
44
56
10.5
200
8″
228
179
24.5
321
17
102
12
125
193
50
60
17.4
250
10″
266
216
25
395
22
102
12
125
241
57
68
28.1
300
12″
291
247
25
461
22
102
12
125
292
66
78
40
350
14″
332
273
30
511
27
125
14
150
329
62
78
55
400
16″
363
317
30
580
27
125
14
150
376
84
102
85
450
18″
397
348
39
630
36
140
18
175
425
94
114
114
500
20″
425
393
39
700
36
140
18
175
475
110
127
144
600
24″
498
453
49
823
46
165
22
210
573
120
154
227
700
28″
626
531
90
928
63.1
254
18
300
674
54
165
342
750
30″
660
564
90
984
63.1
254
18
300
727
54
165
400
800
32″
666
601
90
1061
63.1
254
18
300
771
60
190
485
900
36″
722
660
110
1170
74.7
254
18
300
839
60
203
605
1000
40″
806
728
120
1290
83.7
298
22
350
939
60
216
776
1100
44″
826
771
140
1404
94.7
298
22
350
1036
50
255
985
1200
48″
941
874
150
1511
104.7
298
22
350
1137
62
276
1190
1400
56″
1000
940
175
1685
139.9
356
32
415
1351
62
279
1380
1600
64″
1155
1085
195
1930
160
356
32
415
1548
65
318
2054
1800
72″
1200
1170
195
2170
174.5
406
39
475
1703
70
356
3075
2000
80″
1363
1360
245
2345
199
406
39
475
1938
75
406
4500
FAQs
What is a lug style butterfly valve?
A lug style butterfly valve is a type of valve that uses a circular disc to control the flow of liquids or gases. It has two halves and is opened and closed by turning the disc around its axis. The main parts are a body, disk, stem, actuator, bonnet, seat ring and mounting lugs.
The most important feature of this type of valve is its lug style design which allows for easy assembly and installation in tight spaces. Lug style butterfly valves can be used in both linear (on/off) applications as well as those requiring throttling (partial closure) such as regulating water pressure or controlling steam temperature/pressure. They also have good bi-directional operation capabilities meaning they can be used in either direction without any flow restrictions due to disk alignment issues. For this reason, they are often found on high-pressure systems where other types of valves may not perform adequately.
In terms of construction material choices for lug butterfly valves there are several options including cast iron, carbon steel bodies with stainless steel trim components; all stainless steel; iron body with bronze trim pieces; aluminum bodies with brass trim components; The choice will ultimately depend on the application requirements such as size requirements, media operating temperature/pressure ratings etc., cost considerations etc.
What are the advantages of a lug butterfly valve?
A lug butterfly valve is a type of shut-off valve that relies on a disk-shaped closure element that rotates inside the body of the valve to open or close it. This type of valve offers numerous advantages over other types, including:
High Flow Rate: Lug butterfly valves are known for their excellent flow rate capacities, allowing them to move large amounts of fluid through pipelines quickly and efficiently without compromising pressure control. They can even be used as throttles when there is an increase in pressure or flow on one side of the line.
Reliability: The design and construction of lug butterfly valves ensures they will last longer than many other types of valves due to their lower number of parts and less complicated assembly processes which reduces chances for leakages or corrosion related problems caused by rusting components within the system.
Low Cost Maintenance: Thanks to its simple design, maintenance costs associated with lug butterfly valves are much lower compared to most other shut-off valves, enabling operators to save money while keeping their systems running reliably and efficiently for years with minimal expenses required for repairs or replacements down the road.
Lug type butterfly valve installation?
The lug type butterfly valve installation is an important component in many pump systems. It allows for the regulation of flow and provides shutoff capabilities when necessary. The installation process can be divided into four main steps: preparing the pipe, mounting the lugs onto the valve, attaching gaskets to both sides of the pipe, and connecting and tightening bolts.
Step 1: Preparing the Pipe – Before beginning this step it’s important to ensure that all pipes are properly aligned and that any debris has been removed. Next, measure out how much space is needed for a successful installation taking into account a safe amount of clearance between each component part. This will help ensure that everything fits correctly without obstructing other parts or fittings during operation.
Step 2: Mounting Lugs – After preparing the pipe for proper fitment, mount two lugs onto either side of your butterfly valve by placing one lug on either end of its body stem tube and then tightly screwing them together using stainless steel washers as cushioning between each point where contact occurs.
Step 3: Attaching Gaskets – To ensure a secure seal around your valves opening attach two gaskets – one facing inside from behind it (drive-side) and another on front outside (flange-side) side so that they match up with their corresponding mounting flanges for your pipes connection points during operation preventing any leakage or erosion throughout their lifespan.
Step 4: Connecting & Tightening Bolts– Lastly connect both sides securely by running bolts through previously placed holes in order to tighten them down firmly according to manufacturer’s instructions before testing functionality with water pressure test kits available at most hardware stores across America after completion – making sure all connections have achieved their desired levels before starting operations again within economical safety guidelines!
Lug vs wafer butterfly valve?
When comparing lug and wafer butterfly valves, there are a few key differences to consider. Lug butterfly valves have flanged ends that allow them to be bolted together in-line with pipe flanges. This allows for less installation time and fewer leak points when compared with traditional gate or globe valves. Wafer butterfly valves, on the other hand, do not require any extra components like bolts or gaskets; instead they just fit between two pieces of pipe and can be tightened down using clamps.
The main difference between the two is that lug butterfly valves are more difficult to install than wafer models because all the necessary components (valve body, disc, bolt kits) must be connected before it’s ready for use. Additionally, because of their size and construction material (usually metal), lug butterlfy valves tend to be much heavier than their wafer counterparts which can make them cumbersome to install in some applications such as low-clearance industrial piping systems where space is limited.
