Q340HYF type eccentric hemispherical valve

The Q340HYF eccentric hemispherical valve is a top – notch choice for fluid control. It uses an eccentric tightening structure with a metal hard – seal pair, ensuring smooth flow and no scouring when opened or closed, ideal for scaling – prone two – phase streams. Bimetal hemispheres and specially treated valve seats offer anti – corrosion, wear – resistance, etc. It achieves zero leakage of harmful gases. With a compensable valve core, it lasts long, and the valve seat is reusable. Suitable for sewage, oil, gas, slurry, and pulverized coal ash systems, meeting strict industrial needs.

一.Product Introduction

The Q340HYF eccentric hemispherical valve is a top – notch choice for fluid control. It uses an eccentric tightening structure with a metal hard – seal pair, ensuring smooth flow and no scouring when opened or closed, ideal for scaling – prone two – phase streams. Bimetal hemispheres and specially treated valve seats offer anti – corrosion, wear – resistance, etc. It achieves zero leakage of harmful gases. With a compensable valve core, it lasts long, and the valve seat is reusable. Suitable for sewage, oil, gas, slurry, and pulverized coal ash systems, meeting strict industrial needs.
二.Product Features
1. Small flow resistance. The medium channel inside the valve body is straight, the medium flows in a straight line, and the flow resistance is small.
2. Less effort when opening and closing. It is compared with the globe valve, because whether it is open or closed, the direction of movement of the gate is perpendicular to the direction of medium flow.
3. Large height and long opening and closing time. The opening and closing stroke of the gate is relatively large, and the lifting is carried out by the screw.
4. Water hammer is not easy to produce. The reason is the long closing time.
5. The medium can flow in any direction on both sides, easy to install. Both sides of the gate valve channel are symmetrical.
6. The structural length (the distance between the two connecting end faces of the shell) is small.
7. Simple shape, short structure length, good manufacturing technology and wide application range.
8. Compact structure, good valve rigidity, smooth passage, small flow resistance, stainless steel and hard alloy sealing surface, long service life, PTFE packing, reliable sealing, light and flexible operation.
三.Technical data

Parameter Details
Nominal pressure (Mpa) 0.6, 1.0, 1.6, 2.5, 4.0
Nominal diameter (mm) 40 – 1600, 40 – 1600, 40 – 1200, 40 – 600, 40 – 600
Sealing test pressure (Mpa) 0.66, 1.1, 1.76, 2.75, 4.4
Shell test pressure (Mpa) 0.9, 1.5, 2.4, 3.75, 6.0
Applicable temperature (°C) -29 ~ 300, -29 ~ 425, -29 ~ 540
Applicable media Clear water, seawater, sewage, acid – alkali, slurry, steam, gas, oil
Drive mode Manual, electric, pneumatic
Connection form Flange connection, clamp connection
Installation method Vertical installation, horizontal installation

å››.The main shape and connection size

Nominal pressure PN/MPa Nominal diameter DN/mm Size (mm)
L D K d f C Z – Φd H
1.6 40 165 150 110 85 3 16    
50 178 165 125 100   4 – Φ18  
65 190 185 145 120 18   280
80 203 200 160 135 20   320
100 229 220 180 155   8 – Φ18 370
125 254 250 210 185 22   430
150 267 285 240 210 24 8 – Φ23 510
200 292 340 295 265 26 12Φ – 23 600
250 330 405 355 320 30 12 – Φ26 690
300 502 460 410 375 4     760
350 572 520 470 435 34 16 – Φ26 830
400 610 580 525 485 36 16 – Φ30 925
450 660 640 585 545 40 20 – Φ30 1025
500 700 715 650 608 44 20 – Φ34 1120
600 813 840 770 718 5 48 20 – Φ36 1210

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