Worm gear WCB wafer butterfly valve
Body:WCB; Disc: CF8, Stem: 13Cr. Seat: SS304+ STL
Test / Inspection:
API 598/ISO 5208
Face To Face:
PS: We also can do according to customer's requirement
Unique Plum Pin Design
Adopts the plum pin design, which DBV butterfly valve
is different from traditional pin design. As we all know,
traditional pin is straight to the stem, but the plum pin is
tilted to the stem. From the aspect of application, the plum
pin could afford higher pressure and larger diameter.
Oval Turtle Disc Design
DBV butterfly valve adopts the unique oval turtle
advantages such as high strength, good flow truss structure design of the disc.
It has several characteristics and low flow-resistance coefficient.
Triple Eccentricity Design Features
The stem is offset on both the X (1)and Y (2) axis of the valve's
center line. This produces a cam一like motion. The third offset (3)
consists of an inclined conical profile machined into the valve
sealing surface.This allows rotary engagement and disengagement
of the seat and seal ring without interference. All rubbing
between seat and seal ring is thereby eliminated. Once the seat
and seal ring are fully engaged torque is applied in order to
create a bi一directional, zero leakage, metal-to一metal seal. For
this reason, triple offset valves are often defined as "torque" seated
rather than”position” seated as in the case of resilient or highperformance products.
Multi-layer disc sealing ring
Multi-layer disc sealing ring adopts ss304 and graphite laminated, sealing
by the inside graphite, applied for low and middle pressure, as recycle water,
swage treatment, city building, etc.
Bottom Cover Design
Bolt & Nut
Factory Direct Sales
Q1. Are you a factory or trading company?
A: We are a factory specialized in manufacturing valves 20 years. We both have factory in Wenzhou and Shanghai.
Q2. Can I have a sample order for valve?
A: Yes, we welcome sample order to test and check quality.Mixed samples are acceptable.
Q3.Do you have any MOQ limit for valve order?
A: Low MOQ, 1pc for sample checking is available
Q4. How do you ship the goods?
A: We usually ship by sea, by air, by courier, etc.
Q5. How to check the process of the order?
A: You can check your order on our website after we provide you account and password.
Q6: Do you offer guarantee for the products?
A: Yes, we offer 2 years warranty to our products and we could repair freely for lifelong time.
Q7: Can you put our Logo on the valves?
A:Yes, we can totally produce products according to your special request, even manufacture them base on your drawing.
Q8: How can I check your factory situation while it's difficult for me to come to China?
A：We have photos and videos on our website, youtube and facebook, It shows every step of our manufacturing.
DBV VALVE GROUP CO., LTD is manufacturer of valves.
Shanghai Factory : No.255 Shenjiabang Road, Baihe Town, Qingpu District, Shanghai, China.
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Design and Manufacture Standard:
Inspection Test Standard:
Material Pressure-temp. Standard:
Size≤24” according to ANSI B16.5
Face to Face:
Flange Short Pattern to ISO5752 Basic Series 13
Size≥24” according to ANSI B16.47 Series B
Flange Long Pattern to ASME B16.10
Fire Safe Standard:
Testing Pressure at Constant Temp.(MPa)
Design and Manufacture Standard:
Testing Pressure at Constant Temp.（MPa）
Design and Manufacture Standard
GB/T 13927 API598
PS: We also can do according to customer's requirements.
1. DBV butterfly valve is characterized by simple structure, small volume and light weight, and it is easy to install and adjust.
The valve is widely used in the medium and low pressure pipeline.
2. Good sealing performance，corrosion resistance，high pressure and temperature resistance, smart control and safe use.
3. The unique design of triple eccentricity makes no friction between the sealing surface and extend the valve service life.
4. The elastic seal is produced by the torque.
5. The wedge design makes the valve close more and more tightly by automatic sealing function, and there’s compensation
and zero leakage between the sealing surfaces.
Material for Main Parts
WCB, 304, 316, 316 L, CF8M,etc.
WCB, 304, 316, 316 L, CF8M, etc.
316, 2Cr13, 1Cr18Ni9Ti, etc.
316, Fluorine Plastic, etc.
Flexible Graphite, Fluorine Plastic, etc.
1. Factory Overview
2. Quality Control
3. Storage and Warehouse
4. Package and Delivery
5. Honor and Certificate
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