LocationTianjin, China (Mainland)
EmailEmail: sales@likevalves.com
PhonePhone: +86 13920186592

PQ side mounted two way sealed eccentric hemisphere valve

Short Description:

PQ side mounted two-way seal eccentric hemisphere valve is developed on the basis of absorbing the clip type large flow through valve produced by CANALI company of Germany. Its structure adopts the principle of eccentric clamping, and achieves the purpose of valve tightening, adjustment and closing through the transmission mechanism. The seal pair is a metal face ring with hard face seal contact. The double eccentric structure is in the open valve core located in the ball chamber, and the flow section is small When the valve is opened, the surface of the valve core is gradually along the valve seat, which can effectively remove the scaling obstacles and achieve reliable sealing. The first feature is that it is particularly effective for the mixed flow transportation of two-phase mixed flow easy to scale solid precipitation; the second feature is that the hemisphere of the valve is overlaid with different alloys on bimetal and base metal, and the valve seat is also overlaid with corresponding alloy. After special treatment, the sealing surface group is composed of various types such as anti-corrosion, wear resistance, high strength, etc., to meet the needs of different occasions; the third feature is that the sealing is tight, and the transportation of harmful gases can reach the standard No leakage; the fourth feature is that the valve core of the sealing pair has compensation. When the valve seat is worn, it can still be reliably sealed and the service life can be prolonged by turning a little when it is closed. In addition, the compression nut can still be used after being screwed off, adjusted or replaced by the user, which avoids the defects of many existing valve seal failure and whole set scrapping. Therefore, the selection of surfacing different alloy bimetallic seal pairs can be used in different industrial fields that require strict sealing, such as wear resistance, corrosion resistance, high temperature resistance, etc.


Product Detail

OEM/ODM Service

Product Tags

Product use

Suitable for sewage treatment, pulp, alumina, urban heating, petrochemical, gas, slurry, coal ash.

 

Product features

1. Large circulation area and small flow resistance. This is because the opening valve core is located in the ball chamber, and the fluid passes through

2. Small operating torque, turn 90 degrees to open and close, easy to operate

3. Tight seal; double eccentric metal hard seal. The structure does not affect the opening and closing, which is the most significant feature of the hemisphere valve

4. Long service life, wear-resistant sealing pair, with compensation, valve seat can be adjusted or replaced

 

Product executive standard

Design criteria Structural length Flange standard Test and inspection
GB/T12237-2007 GB/T12221-2005 GB/T9113-2000EN1092 GB/T13927-2008API598

Main technical parameters

Nominal pressure 0.6 1.0 1.6 2.5 4.0 6.4
Maximum working pressure at normal temperature 0.6 1.0 1.6 2.5 4.0 6.4
Shell strength test pressure 0.9 1.5 2.4 3.8 6.0 9.6
Airtight test pressure 0.6 0.6 0.6 0.6 0.6 0.6
High pressure seal test pressure 0.66 1.1 0.8 2.75 4.4 7.1
Leakage rate 0.1DNmmm/s(according to API598 standard)
Applicable temperature Soft seal-40~+200 Hard seal-50~+600
Applicable medium Natural gas, water vapor, oil products, acids, alkalis, pulverized coal, coal ash, waste residue, mud, granular, fiber and other media
Transmission form Turbine drive, electric drive, pneumatic drive, hydraulic drive

Material of main parts

Valve body and valve plate
WCB ZG ZG0Cr18Ni12Mo2Ti ZG15Cr1Mo1V
sphere WCB+Cr 1Cr18Ni9TiSpecial surface treatment 0Cr18Ni12Mo2TiSpecial surface treatment 25Cr1Mo1VSpecial surface treatment
Stem 20Cr13 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti 25Cr1Mo1V
valve seat Q235A+PTFEBuild up welding 1Cr18Ni9T/PTFE 0Cr18Ni12Mo2Ti/PTFE 25Cr1Mo1V/PTFE
filler Flexible graphite Flexible graphite Flexible graphite Flexible graphite
Bolt 35 0Cr18Ni9 0Cr18Ni9 0Cr18Ni9
Nut 45 0Cr18Ni9 0Cr18Ni9 20CrMo

PQ Diagram of side mounted two way seal eccentric hemisphere valve

1608616396(1) 1608616413(1)

Main connection dimensions

DN L D D1 D2 Z-d0 f b h
40 165 150 110 84 4-18 2 18 210
50 178 165 125 99 4-18 2 20 230
65 190 185 145 118 4-18 2 20 245
80 203 200 160 132 8-18 2 20 265
100 229 220 180 156 8-18 2 22 310
125 254 250 210 184 8-18 2 22 350
150 267 285 240 211 8-22 2 24 395
200 292 340 295 266 8-22 2 24 435
250 330 395 350 319 12-22 2 26 480
300 356 445 100 370 2-22 2 26 550
350 381 505 460 429 16-22 2 26 620
400 430 565 515 480 16-26 2 26 670
450 502 615 565 530 20-26 2 28 700
500 550 670 620 582 20-26 2 25 760
600 660 780 725 682 20-30 2 34 850
700 770 895 840 794 24-30 5 34 920
800 880 1015 950 901 24-33 5 36 1100
900 1000 1115 1050 1001 28-33 5 38 1300
1000 1100 1230 1160 1112 28-36 5 38 1600
1200 1200 1455 1380 1328 32-39 5 44 1950

ball-valve

Eccentric-Semi-ball-valve_01

ͷ_01

ball-valve

-2_07

-2_09-޸

-2_12

 

 


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