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              Location:PRODUCTS >> Ball valve >> Dress eccentric hemisphere valve
              Dress eccentric hemisphere valve
              Model: DYQ40 type
              Nominal diameter: DN100 ~ 1400mm
              Nominal pressure: PN1.0 ~ 1.6MPa
              Material: Carbon steel WCB / CF8 stainless
              Medium: natural gas, coal gas, liquefied petroleum gas, crude oil, heavy
              Temperature: ≤425 ℃
              Method Blue Connection Size: GB / T 9113.1-2000.ASME / ANSI 16.5
              Structure Length: GB 12221-2005, ASNE B16.10
              Manufacturing and Acceptance: GB12237-89, API 6D
              Pressure Test According: JB / T9092-1999, GB / T13927- 92, AP1598

              Upper body eccentric hemisphere valve Product Description:

              Top coat eccentric hemispherical valve is suitable for sewage treatment, pulp, alumina, urban heating and heating, oil, natural gas, liquid two phases of mixed or easily chemical crystallization of media and other requirements of the occasion is strictly prohibited. Can be used instead of: General valves, special valves for the oil and chemical industry, special valves for gas, special valves for slurry, special valves for pulverized coal ash and the like.

              Overbalance hemisphere eccentric eccentric structure principle, through the transmission mechanism to achieve the purpose of tightness, regulation, closure. The double-eccentric structure ball valve is hidden in the valve cavity when the ball valve is opened, and the flow surface is large. When the valve is closed, the spherical surface of the valve core gradually advances along the valve seat, and has a shearing function so as to effectively remove fouling obstacles and achieve reliable sealing.
               

              Top coat eccentric hemispherical valve works:

              This series of ball valve is the crystallization of the traditional ball valve spiritual changes, it is fixed to the metal ball crown on the eccentric ball, eccentric rotation of the crankshaft by 90 degrees to achieve the valve opening and closing, and metal ball sealing surface contact with the metal seat in the Axial and radial float to compensate for the ball and valve seat with the valve. Simple and reliable structure and effective sealing method makes it not only can replace the gate valve, but also can be used in non-useable system. It can be widely used in petroleum, chemical, power and metallurgy industries. Its core technology is the first in China, and it has unique design and novel structure. Its structure adopts the principle of eccentric tightness to achieve the purpose of locking, adjusting and closing through the transmission mechanism. The sealing pair is a hard-surface contact seal of a metal surface ring belt. When the double-eccentric structure is opened, the valve core is located in a Tibetan ball room, The valve is not washed, the valve core is not washed off when it is closed, and when the valve core is opened, the valve core gradually advances along the valve seat to effectively remove scaling problems and achieve reliable sealing. It is particularly effective for mixed flow delivery of two-phase flow-prone fouling solids.
               

              Loading eccentric hemisphere valve Features:

              1, sealed tightly, delivering zero harmful gas leakage.

              2, the valve hemisphere with bimetallic, base metal surfacing on different alloys, the valve seat is also the corresponding surfacing by special treatment, the sealing surface into anti-corrosion, wear-resistant, high strength and other types to meet the needs of different occasions .

              3, the seal of the deputy left the amount of compensation valve, when the valve to do wear, turning off a little while, any reliable sealing, extending the service life. In addition, the user will squeeze the nut twist off, seat adjustment or replacement valve is still available, to avoid the failure of the valve seal, the entire scrap defects.

              4, the structure of the principle of eccentric tight tight through the transmission mechanism to achieve the purpose of regulating, closing, sealing pair is a metal surface with hard-surface contact seal, the double-eccentric structure in the open when the spool is located in possession of the ball room, large flow cross-section , And the valve is not washed, the valve core is not washed off when closed, open when the valve core gradual progress along the valve seat, the effective removal of scaling obstacles to achieve a reliable seal. It is particularly effective for mixed flow delivery of two-phase flow-prone fouling solids.

               

              Main performance specifications:

              Nominal pressure 

              0.6

              1.0

              1.6

              2.0

              2.5

              4.0

              5.0

              6.4

              10

              Shell test pressure 

              0.9

              1.5

              2.4

              3.0

              3.8

              6.0

              7.5

              9.6

              15

              High pressure seal test 

              0.66

              1.1

              1.8

              2.2

              2.8

              4.4

              5.5

              7.1

              11

              Applicable medium
              and temperature ℃

              DYQ40 type

              Water, steam, pulp and other solutions t ≤ 180 ℃

              DYQ40 type

              Natural gas, gas, liquefied gas, crude oil, heavy oil t ≤ 425 ℃

              DYQ40 type

              Solution, pulp, alumina powder, coal dust, coal ash, dusty gas, waste residue, etc. t ≤ 300 ℃

              ☆ top coat eccentric hemisphere valve main parts material and code 
               

              Part Name

              DYQ40 type

              DYQ40 type

              DYQ40 type

              Body

              Carbon Steel WCB / Stainless Steel CF8

              Carbon Steel WCB / Stainless Steel CF8

              Carbon Steel WCB / Stainless Steel CF8

              Valve stem

              2Cr13 / 304

              2Cr13 / 304

              2Cr13 / 304

              Spool seal pair

              WCB / CF8 + Cr

              WCB / CF8 + hardened alloy steel

              Special hardened alloy steel 
                     JK117 / 17Co alloy

              Seat seal pair

              PTFE / Molon

              WCB / CF8 + hardened alloy steel

              Special hardened alloy steel 
                     JK117 / 17Co alloy


               

              Nominal pressure 

              Nominal diameter  (mm)

              Size (mm)

              L

              D

              K

              d

              b

              z-d0

              Hw

              Hd

              1.0MPa

              100

              229

              220

              180

              156

              22

              8-φ18

              330

              380

              125

              254

              210

              210

              184

              22

              8-φ18

              345

              405

              150

              267

              240

              240

              211

              24

              8-φ22

              370

              440

              200

              292

              295

              295

              266

              24

              8-φ22

              405

              470

              250

              330

              350

              350

              319

              26

              12-φ22

              480

              540

              300

              403

              400

              400

              370

              26

              12-φ22

              520

              580

              350

              430

              460

              460

              429

              26

              16-φ22

              570

              630

              400

              530

              515

              515

              480

              26

              16-φ26

              630

              710

              450

              580

              565

              565

              530

              28

              20-φ26

              690

              770

              500

              660

              620

              620

              582

              28

              20-φ26

              740

              820

              600

              840

              725

              725

              682

              34

              20-φ30

              840

              940

              700

              900

              840

              840

              794

              34

              24-φ30

              960

              1040

              800

              1000

              950

              950

              901

              36

              24-φ33

              1080

              1180

              900

              1100

              1050

              1050

              1001

              38

              28-φ33

              1190

              1280

              1000

              1200

              1160

              1160

              1112

              38

              28-φ36

              1310

              1420

              1200

              1300

              1380

              1380

              1328

              44

              32-φ39

              1420

              1530

              1400

              1500

              1590

              1590

              1530

              48

              36-φ42

              1540

              1650

              1.6MPa

              100

              229

              180

              180

              156

              22

              8-φ18

              330

              380

              125

              254

              210

              210

              184

              22

              8-φ18

              345

              405

              150

              267

              240

              240

              211

              24

              8-φ22

              370

              440

              200

              292

              295

              295

              266

              24

              12-φ22

              405

              470

              250

              330

              355

              355

              319

              26

              12-φ26

              480

              540

              300

              403

              410

              410

              370

              28

              12-φ26

              520

              580

              350

              430

              470

              470

              429

              30

              16-φ26

              570

              630

              400

              530

              525

              525

              480

              32

              16-φ30

              630

              710

              450

              580

              650

              585

              548

              40

              20-φ30

              690

              770

              500

              660

              770

              650

              609

              44

              20-φ33

              740

              820

              600

              840

              840

              770

              720

              54

              20-φ36

              840

              940

              700

              900

              950

              840

              794

              40

              24-φ36

              960

              1040

              800

              1000

              1050

              950

              901

              42

              24-φ39

              1080

              1180

              900

              1100

              1125

              1050

              1001

              44

              28-φ39

              1190

              1280

              1000

              1200

              1255

              1170

              1112

              46

              28-φ42

              1310

              1420

              1200

              1300

              1485

              1390

              1328

              52

              32-φ48

              1420

              1530

              1400

              1500

              1590

              1590

              1530

              58

              36-φ48

              1540

              1650


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