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High pressure metal to metal WCB butterfly valve

Product Description

ASME Standard

Design and Manufacture Standard API 609 Inspection and API 598

Test Standard

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

Testing Pressure at Constant Temp.（MPa）

Pressure Applicable Temp. Applicable Medium

Shell Test Seal Test Air Test

150 2.93 2.07 0.6

Class 300 7.58 5.52 0.6 -46℃~550℃ W.O.G. etc.

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

Testing Pressure at Constant Temp.（MPa）

Pressure Applicable Temp. Applicable Medium

Shell Test Seal Test Air Test

Nominal 1.0 1.5 1.1

Pressure 1.6 2.4 1.76 0.5~0.7 Mpa -40℃~570℃ W.O.G. etc.

2.5 3.75 2.75

GOST Standard

Design and Manufacture Standard JB/8527 API609 Pressure Test GB/T 13927 API598

Testing Pressure at Constant Temp.（MPa）

Pressure Applicable Temp. Applicable Medium

Shell Test Seal Test Air Test

Nominal 1.0 1.5 1.1

Pressure 1.6 2.4 1.76 0.6 Mpa -40℃~570℃ W.O.G. etc.

2.5 3.75 2.75

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

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.