Marine Butterfly Valve
Your Professional Marine Butterfly Valve Supplier
Qingdao Keysmile Valves Co. Ltd. is a diversified manufacturing company located in the Environmental Protection Industrial Park of Jimo District, Qingdao, China. Our core expertise and primary focus lie in precision sheet metal fabrication and marine valves.
We specialize in the production of high-quality hardware components and parts for a wide range of industries. Our capabilities include crafting components from various materials, including steel, iron, steel, and aluminum, through processes like cutting, bending, punching, and assembling. We are particularly well-known overseas for manufacturing various brackets, charging piles, furniture hardware, public facilities industry, various cabinets, trailer compartments, etc.
Why choose us
Comprehensive Quality System Assurance
The company is ISO 9001 certified and strictly implements process control and data traceability. From raw material inspection and production monitoring to final product testing, detailed records are kept to ensure consistent quality and a high pass rate for every batch.
High-Precision Machining and Reliable Performance
Equipped with advanced CNC machining equipment and testing instruments, and supported by an experienced technical team, we can achieve micron-level precision control. Our metal components meet the stringent requirements of European and American customers in terms of strength, wear resistance, and dimensional accuracy.
Efficient and Stable Delivery Capability
With a lean production system and intelligent scheduling management, we ensure visualization and efficient coordination throughout the production process. Even for large-volume orders, we guarantee on-time delivery and stable quality, meeting the continuous supply demands of long-term partners.
Flexible Customization and Technical Support
We not only process parts according to customer drawings (DWG, STEP, PDF, etc.), but also provide structural optimization and process improvement suggestions to help customers reduce costs and improve assembly efficiency — truly delivering a one-stop service from prototyping to mass production.
Marine Butterfly valves are the workhorse of the marine industry. These valves are easily installed and maintained. Butterfly valves get their name from the way they operate, in which vertical disc pivots to open and close around a stem, resembling the insect. Onboard ships, butterfly valves vary greatly in function and cost, from economical iron valves to triple-offset nickel-aluminum-bronze ones. Butterfly valves are “quarter-turn” valves and are traditionally operated through a lever, gear operator, or actuator. They usually come in either lugged or wafer-style bodies. The components that make up most butterfly valves are the valve body, the disc, the stem, and the seat. The seat is traditionally made of rubber and is the sealing element of the valve where it meets the disc. Seats can also be made of metal, which is common in fire-safe applications.
|
DIM. |
A |
B |
C |
GB/T 17241.6 PN6 |
GB/T 17241.6 PN10 |
JIS B2220 5K |
JIS B2220 10K |
∅D1 |
∅D2 |
4*∅d |
H |
K |
L |
∅d0 |
||||||||
|
P.C.D |
N-M |
a° |
P.C.D |
N-M |
a° |
P.C.D |
N-M |
a° |
P.C.D |
N-M |
a° |
|||||||||||
|
DN40(1.5") |
60.2 |
125 |
32 |
∅100 |
4-M12 |
45° |
∅110 |
4-M16 |
45° |
∅95 |
4-M12 |
45° |
∅105 |
4-M16 |
45° |
77 |
57 |
4x ∅7 |
28 |
3 |
13.8 |
12.6 |
|
DN50(2") |
68 |
126 |
42 |
∅110 |
4-M12 |
45° |
∅125 |
4-M16 |
45° |
∅105 |
4-M12 |
45° |
∅120 |
4-M16 |
45° |
77 |
57 |
4x ∅7 |
28 |
3 |
13.8 |
12.6 |
|
DN65(2.5") |
72.5 |
136.6 |
46 |
∅130 |
4-M12 |
45° |
∅145 |
4-M16 |
45° |
∅130 |
4-M12 |
45° |
∅140 |
4-M16 |
45° |
77 |
57 |
4x ∅7 |
28 |
3 |
13.8 |
12.6 |
|
DN80(3") |
88.3 |
148 |
46 |
∅150 |
4-M16 |
45° |
∅160 |
8-M16 |
22.5° |
∅145 |
4-M16 |
45° |
∅150 |
8-M16 |
22.5° |
77 |
57 |
4x ∅7 |
28 |
3 |
13.8 |
12.6 |
|
DN100(4") |
103 |
167 |
52 |
∅170 |
4-M16 |
45° |
∅180 |
8-M16 |
22.5° |
∅165 |
8-M16 |
22.5° |
∅170 |
8-M16 |
22.5° |
90 |
70 |
4x ∅10 |
28 |
5 |
17.77 |
15.77 |
|
DN125(5") |
115 |
179 |
56 |
∅200 |
8-M16 |
22.5° |
∅210 |
8-M16 |
22.5° |
∅200 |
8-M16 |
22.5° |
∅210 |
8-M20 |
22.5° |
90 |
70 |
4x ∅10 |
28 |
5 |
20.92 |
18.92 |
|
DN150(6") |
129 |
195 |
56 |
∅225 |
8-M16 |
22.5° |
∅240 |
8-M20 |
22.5° |
∅230 |
8-M16 |
22.5° |
∅240 |
8-M20 |
22.5° |
90 |
70 |
4x ∅10 |
28 |
5 |
20.92 |
18.92 |
|
DN200(8") |
159 |
229 |
60 |
∅280 |
8-M16 |
22.5° |
∅295 |
8-M20 |
22.5° |
∅280 |
8-M20 |
22.5° |
∅290 |
12-M20 |
15° |
115 |
89 |
4x ∅14 |
35 |
5 |
24.1 |
22.1 |
|
DN250(10") |
197 |
277 |
68 |
∅335 |
12-M16 |
15° |
∅350 |
12-M20 |
15° |
∅345 |
12-M20 |
15° |
∅355 |
12-M22 |
15° |
115 |
89 |
4x ∅14 |
35 |
8 |
31.45 |
28.45 |
|
DN300(12") |
221 |
313 |
78 |
∅395 |
12-M20 |
15° |
∅400 |
12-M20 |
15° |
∅390 |
12-M20 |
15° |
∅400 |
16-M22 |
11.25° |
140 |
108 |
4x ∅14 |
40 |
8 |
34.6 |
31.6 |
|
DN350(14") |
257.3 |
346 |
78 |
∅445 |
12-M20 |
15° |
∅460 |
16-M20 |
11.25° |
∅425 |
12-M22 |
15° |
∅445 |
16-M22 |
11.25° |
140 |
108 |
4x ∅14 |
40 |
8 |
34.6 |
31.6 |
|
DN400(16") |
290.4 |
395 |
102 |
∅495 |
16-M20 |
11.25° |
∅515 |
16-M24 |
11.25° |
∅495 |
16-M22 |
11.25° |
∅510 |
16-M24 |
11.25° |
197 |
159 |
4x ∅20 |
50 |
10 |
36.15 |
33.15 |
|
DN450(18") |
316.9 |
428 |
114 |
∅550 |
16-M20 |
11.25° |
∅565 |
20-M24 |
9° |
∅555 |
16-M22 |
11.25° |
∅565 |
20-M24 |
11.25° |
197 |
159 |
4x ∅20 |
50 |
10 |
40.95 |
37.95 |
|
DN500(20") |
348 |
462 |
127 |
∅600 |
20-M20 |
9° |
∅620 |
20-M24 |
9° |
∅605 |
20-M22 |
9° |
∅620 |
20-M24 |
9° |
197 |
159 |
4x ∅20 |
65 |
10 |
44.12 |
41.12 |
|
DN600(24") |
435.5 |
529 |
154 |
∅705 |
20-M24 |
9° |
∅725 |
20-M27 |
9° |
∅715 |
20-M24 |
9° |
∅730 |
20-M30 |
7.5° |
276 |
216 |
4x ∅20 |
70 |
16 |
54.62 |
50.62 |
Product Structure Drawing
Description
|
Design and Manufacture |
GB/T12238-2008 |
|
Face To Face |
GB/T12221-2005 |
|
Flanges Drilled |
GB/T17241.6&JIS B2220PN6/PN10&5K/10K |
|
Inspection standard |
GB/T13927-2008 |
Test pressure
|
Nominal Pressure |
0.6/1.0/1.6MPa |
|
|
Shell Test Pressure |
Water |
0.9/1.5/2.4MPa |
|
Seal Test Pressure |
0.66/1.1 /1.76MPa |
|
|
Temperature range |
-40°C 120℃ |
|
|
Applicable medium |
Water Gas Oil... |
|
|
5 |
Gear Box |
DI |
|
4 |
Seat |
SS316 |
|
3 |
Stem |
EPDM |
|
2 |
Disc |
CF8/CF8M/C954 |
|
1 |
Body |
DI |
》They consist of a simple structure which makes them a lightweight option.
》Marine butterfly valves can achieve impressive sealing properties even in low-pressure situations.
》The streamlined design of a marine butterfly valve reduces the loss of fluid.
》These valves are highly durable even in seawater.
》Butterfly valves used in ships require very little maintenance.
》In space-restrictive situations, butterfly valves are compact.
》For the transportation of corrosive and non-corrosive fluids.
》To regulate medium flow in different parts of a ship.
》In places where a tight shut-off is required because butterfly valves effectively prevent leakage.
》For jacking-up rigs and in ballast systems.
》For underwater applications because butterfly valves are durable in saltwater.
》As a shut-off valve because butterfly valves with pneumatic actuators can be rotated very quickly.
Types of Marine Butterfly Valve
Concentric Butterfly Valves
These valves have a metal disc that fits within a resilient rubber seat, offering a simple and cost-effective solution for low-pressure applications.
Double-Offset (High-Performance) Butterfly Valves
These valves feature an offset design that reduces friction during operation, extending the valve’s lifespan and improving performance in higher-pressure systems.
Triple-Offset Butterfly Valves
Designed for high-pressure applications, these valves have a metal seat and disc, providing a bubble-tight seal and excellent durability. The triple offset design minimizes contact between the disc and seat, reducing wear and ensuring reliable operation.
Space Efficiency: Tailored for confined spaces, making them a perfect fit in areas with limited room for installation.
Fluid Versatility: Versatile in fluid handling, adept at transporting both corrosive and non-corrosive substances efficiently.
Precise Flow Control: Enables precise regulation of medium flow within various ship compartments, ensuring optimal functionality.
Leakage Prevention: Designed for a secure shut-off mechanism, effectively preventing any leakage occurrences.
Rig and Ballast Utility
Integral to rig operations and ballast systems, contributing to stability adjustments and operational efficiency.
Saltwater Resilience
Engineered for durability in saltwater environments, making them a reliable choice for underwater applications.
Efficient Actuation
Particularly suitable for rapid operations, especially when equipped with pneumatic actuators for swift rotation and responsiveness.
FAQ
We're professional marine butterfly valve manufacturers and suppliers in China, specialized in providing high quality customized service and OEM service. We warmly welcome you to buy high precision marine butterfly valve at the best price from our factory.
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