High pressure metal to metal WCB butterfly valve 300LB

Valve manufacturer description

Metal to metal butterfly valve

Name:	Fully metal to metal butterfly valve
Material:	Body:WCB; Disc: SS316, Stem: SS316. Seat: Overlay STL
Nominal Pressure:	PN100
Nominal Diameter:	DN300
End Connection:	Flange
Structure:	Triple Eccentricity
Operation:	Worm gear
Valve type:	Industrial Valve
Working Temp.:	-29℃~+200℃
Design Standard:	API 609
Test / Inspection:	API 598/ISO 5208
Face To Face:	API 609

PS: We also can do according to customer's requirements.

Two directional flow

The pressure of bidirectional flow could be afforded to achieve no flow restrictions on the installation.

DBV fully metal to metal sealing

Its advantages are anti-wear, anti-erosion and long service life,etc. DBV butterfly valve suitable for mant poor

working conditions such as high pressure and high temperature.

metal to metal renewable seat butterfly valve

Renewable seat and seal ring

The design of renewable seat and seal ring could avoid the valve damaged caused by the wear

of seal ring and reduce the cost of use

Triple Eccentricity Design Features
Triple Offset Butterfly Valve

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 high performance 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.

Product Comparison

Renewable Seal Ring Design

DBV VALVE GROUP

Yoke Design

metal to metal renewable seat butterfly valve

Factory Direct Sales

DBV Butterfly Valve

Factory Overveiw

Butterfly Valve Factory Overview

Quality Assurance

Butterfly Valve Quality Assurance

Long Time Quality Promise

Our products are with 2 years quality assurance and lifelong maintenance.

Warranty time starts from the dispatch of the goods. Quality assurance means all the cost arising form the quality

problems caused by the manufacturer within two years will be afforded by us.

International Logistics

Butterfly Valve Delivery

Delivery Time and Method

In general, the delivery time will be confirmed with the customer in the order, 1-2 days

after getting the bank receipt or deposit , the goods will make arrangements.

Shipment: CIF, FOB,etc.

Transportation: air, sea, train, logistics.

After-sales Service

Butterfly Valve After sales

Email
We have an email specialized for customer to ask the position of the shipment

and the express, also make the complain or suggestion.

Mail: info@dbvvalve.com

Free Installation Guide

After receiving the goods, you will get a installation guide from our professional technician.

Q1. Are you a factory or trading company?

^{A: We are a factory specialized in manufacturing valves over 15 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. The sample is free.}

^{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 print our Logo on the valves?}

^{A:Yes, we can totally produce products according to your special request, even manufacture it 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 the manufacturing.}

dbv valve mnaufacturer Contact us

Company Profile:

DBV VALVE GROUP CO., LTD is manufacturer of valves.

more detail>

^Email:^{info@dbvvalve.com}

Shanghai Factory : No.255 Shenjiabang Road, Baihe Town, Qingpu District, Shanghai, China.

^{Worm Notice:}

^{If you like our valves, please bookmark our Facebook,Twitter, which is}easier to find us.

if you need it one day in the future, we do appreciate it ^{for your kindness}^.

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The Introduction of New Technology and Craft of DBV Triple Offset Fully Metal to Metal Seated Butterfly Valve

Description-dbv valve manufacturer

The first eccentricity:

The deviation between stem rotation center and the seat centerline ensures a tight seal between the seat and disc.

The second eccentricity:

The deviation between sealing cone center and the valve centerline, when the valve opens, can make the butterfly plate leaves sealing surface quickly.

The third eccentricity:

The deviation between sealing cone center and the valve centerline, when the valve opens or closes, can eliminate the friction between the disc sealing surface and seat.

DBV metal to metal structure illusion 1 (1)

ASME Standard

Design and Manufacture Standard:	API 609	Inspection Test Standard:	API 598
Material Pressure-temp. Standard:	ASME B16.34	Flange ends:	Size≤24” according to ANSI B16.5
Face to Face:	Flange Short Pattern to ISO5752 Basic Series 13	Dimension Standard:	Size≥24” according to ANSI B16.47 Series B
Dimension Standard:	Flange Long Pattern to ASME B16.10	Fire Safe Standard:	API 607

Pressure	Testing Pressure at Constant Temp.(MPa)			Applicable Temp.	Applicable Medium
Class (LB)	Shell Test	Seal Test	Air Test	-46℃~550℃	W.O.G. etc.
150	3.0	2.2	0.6
300	7.58	5.52	0.6
600	15.0	11.03	0.6
900	22.5	16.5	0.6

DIN Standard

Design and Manufacture Standard:		DIN 2559			Pressure Test:	EN 12266-1
Pressure		Testing Pressure at Constant Temp.（MPa）			Applicable Temp.	Applicable Medium
		Shell Test	Seal Test	Air Test
Nominal Pressure	1.0	1.5	1.1	0.5-0.7	-40℃~570℃	W.O.G. etc.
	1.6	2.4	1.76
	2.5	3.75	2.75

GOST Standard

Design and Manufacture Standard		JB/8527 API609			Pressure Test	GB/T 13927 API598
Pressure		Testing Pressure at Constant Temp.（MPa）			Applicable Temp.	Applicable Medium
		Shell Test	Seal Test	Air Test
Nominal Pressure	1.0	1.5	1.1	0.5-0.7	-40℃~570℃	W.O.G. etc.
	1.6	2.4	1.76
	2.5	3.75	2.75

PS: We also can make according to customer's requirements.

Characteristics

Triple eccentricity refers to an angle eccentricity added on the basis of the double eccentric structure, as the butterfly valve sealing surface shows an oblique cone. This structure is characterized by the outer side of the disc to be processed into an oblique cone, and also the inner side of the sealing seat is processed into an oblique cone. At this time, the section of the valve sealing surface the becomes oval, thus the shape of the disc sealing surface is under the vertical asymmetry. Because the sealing surface is the oblique cone, the large part of the disc separated by the stem shaft presses the seat upwards along the large inclined surface, and the large part of the disc presses the seat downwards along the small inclined surface. The seal between the disc sealing ring and the seat does not rely on the elastic deformation of the seat, but completely depends on the compact of the touching surface. So there is no friction in the process of the triple eccentric butterfly valve basically opening and closing, and the valve closes tightly with the closing pressure increasing. It is obvious from the principle and structure of the triple eccentric butterfly valve, the triple eccentric butterfly valve has the following advantages:

1) The sealing performance and reliability of the system are improved.

2) The friction is low, and the valve opening and closing flexibly.

3) The valve service life is longer and it could switch repeatedly.

4) The resistance of pressure and high temperature is improved, and the range of applications is wide.

Characteristics

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

Adoption Standard

Parts Name	Material
Body	WCB, 304, 316, 316 L, CF8M,etc.
Disc	WCB, 304, 316, 316 L, CF8M, etc.
Stem	316, 2Cr13, 1Cr18Ni9Ti, etc.
Sealing Ring	316, Fluorine Plastic, etc.
Packing	Flexible Graphite, Fluorine Plastic, etc.