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Q341F LPG Ball valve

Product overview

产品型号:Q341F-40
公称通径:DN15~800mm
公称压力:PN1.0~2.5MPa
主要材质:WCB、1Cr13
工作温度:-29-150℃
适用介质:液化石油气、天然气

Q341F LPG Ball valve product details

Q341F LPG ball valve Overview:

Q347F-16C/25/40 LPG ball valve produced and sold by Baigang valve group  closing parts of the ball revolves around the center line of the valve body to achieve the opening and closing of a valve, the seal is embedded in the valve seat, the end of the metal valve seat is provided with a spring, when the sealing surface wear or burn out, under the action of the spring to promote the valve seat and the ball to form a metal seal.It has automatic relief function, when the valve lumen medium pressure more than spring pre-tightening force, outlet valve seat back out of the sphere, achieve automatic relief effect, automatic reset after pressure relief valve seat, suitable for ordinary work such as water, solvents, acids and gas medium, but also is suitable for the working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene, etc., widely used in various fields.


Q341F LPG Ball valve structural features:

1, A unique valve seat seal seat structure 
With the front seal design, this structure has a two-way seal and the cavity automatically relief function. The sealing seat, inlaid with a sealing material, floats and is spring-loaded. When in the closed position, the sealing surface remains in intimate contact with the ball to ensure leak-tightness of the valve at both high and low pressure drops. 
2, Automatic pressure relief structure 
When the cavity pressure abnormal increase phenomenon, the single seal structure of the ball valve with automatic pressure relief function, and double seal structure of the valve body pressure relief device on the additional pressure relief. 
3, Sealed emergency ambulance function 
Valve design has an auxiliary valve seat emergency seal system. Once the sealing surface is damaged, the corresponding sealant can be injected through the auxiliary sealing system for emergency treatment and the seat area can be rinsed and lubricated by the auxiliary system when necessary. 
4, Anti-static device 
When operating the valve, due to the friction between the ball seat, will have electrostatic charge and accumulate in the ball line. In order to prevent static sparks, special anti-static devices installed in the valve, the static electricity derived. 
5, the fire structure 
fixed ball valve seat with a unique structure, when a fire, the non-metallic sealing surface material burned, the metal ring spring with the elasticity of pushing the valve seat seal with the sphere, thus preventing the spread of fire and media outflow. (Fireproof structure design in line with API607, JB / T6899 and BS755), 
6, the full diameter structure and reduced diameter structure 
To meet user needs, far a company with all-diameter series of ball valves and reduced diameter series, full diameter ball valve pipe diameter Consistent with the pipe diameter, easy to clean, etc. Diameter reduction ball valve light weight, the fluid resistance is only part of the same diameter globe valve, the prospects are broader. 
7, The body of the discharge device 
According to customer requirements, the ball valve body to install the drain valve. Once both ends of the valve are closed, the back pressure in the valve chamber can be vented and relieved through the valve's drain valve.


Q341F LPG Ball valve main parts material:

Body Valve stem Valve ball Sealing surface Gasket filler Operating temperature Suitable media
WCB 1Cr13 1Cr13

1Cr13

Stellite alloy

Body material

Flexible graphite

Stainless steel plus flexible graphite

08 mild steel

F304 F316

Flexible graphite

Braided graphite

-29-150 ° C LPG, natural gas
WC6 15CrMo 15CrMo -29-150 ° C
WC9 25Cr2MoV 25Cr2MoV
LCB 304 304 - 29-150 ° C
CF8 304 304 -29-150 ° C LPG, natural gas
CF3 304L 304L
CF8M 316 316
CF3M 316L 316L


Q341F LPG Ball valve main connection size and weight (GB)


Nominal 
       diameter
standard value Reference Weight (kg)
L D D1 D2 b f Z-Φd H1 H2 H3 H4
Flange Butt welding Q47F Q347F
mm PN1.0 (Mpa)
15 108 165 95 65 46 14 2 4-Φ14 145 210 346 4.5
20 117 190 105 75 56 16 2 4-Φ14 152 220 352 5.5
25 127 216 115 85 65 16 2 4-Φ14 162 235 364 7
32 140 229 140 100 76 18 2 4-Φ18 175 255 382 11.5
40 165 241 150 110 84 18 2 4-Φ18 188 280 406 17
50 178 292 165 125 99 20 2 4-Φ18 205 228 308 430 22 31
65 190 330 185 145 118 20 2 4-Φ18 222 248 340 460 28 39
80 203 356 200 160 132 20 2 8-Φ18 242 270 380 494 41 52
100 229 432 220 180 156 22 2 8-Φ18 265 294 430 538 48 71
125 346 508 250 210 184 22 2 8-Φ18 322 490 588 103
150 394 559 285 240 211 24 2 8-Φ23 358 560 644 180
200 457 660 340 295 286 24 2 8-Φ23 406 640 704 290
250 533 787 395 350 319 26 2 12-Φ23 468 730 766 400
300 610 838 445 400 370 26 2 12-Φ23 538 830 830 540
350 686 889 505 460 429 26 2 16-Φ23 610 940 922 734
400 762 991 565 515 480 26 2 16-Φ26 682 1060 1020 1005
450 864 1092 615 565 530 28 2 20-Φ26 755 1180 1114 1372
500 914 1194 670 620 582 28 2 20-Φ26 832 1300 1204 1880
600 1450 1394 780 725 682 34 2 20-Φ30 922 1420 1290 2648
700 1650 1549 895 840 794 34 2 24-Φ30 1015 1540 1375 3828
800 1850 1778 1015 950 901 36 2 24-Φ34 1110 1650 1448 5462
PN1.6 (MPa)
15 108 165 95 65 46 14 2 4-Φ14 145 210 346 4.5
20 117 190 105 75 56 16 2 4-Φ14 152 220 352 5.5
25 127 216 115 85 65 16 2 4-Φ14 162 235 364 7
32 140 229 140 100 76 18 2 4-Φ18 185 255 382 11.5
40 165 241 150 110 84 18 2 4-Φ18 188 280 406 17
50 178 292 165 125 99 20 2 4-Φ18 205 228 308 430 22 31
65 190 330 185 145 118 20 2 4-Φ18 222 248 340 460 28 39
80 203 356 200 160 132 20 2 8-Φ18 242 270 380 494 41 52
100 229 432 220 180 156 22 2 8-Φ18 265 294 430 538 58 71
125 356 508 25 210 184 22 2 8-Φ18 322 490 588 103
150 394 559 285 240 211 24 2 8-Φ23 358 560 644 182
200 457 660 340 295 266 24 2 12-Φ23 406 640 704 292
250 533 787 405 355 319 26 2 12-Φ26 468 730 766 404
300 610 838 460 410 370 28 2 12-Φ26 538 830 830 545
350 686 889 520 470 429 30 2 16-Φ26 610 940 922 745
400 762 991 580 525 480 32 2 16-Φ30 682 1060 1020 1020
450 864 1092 640 585 548 34 2 20-Φ30 755 1180 1114 1392
500 914 1194 715 650 609 36 2 20-Φ34 832 1300 1204 1910
600 1450 1394 840 770 720 38 2 20-Φ36 922 1420 1290 2688
700 1650 1549 910 840 794 40 2 24-Φ36 1015 1540 1375 3878
800 1850 1778 1025 950 901 42 2 24-Φ39 1110 1650 1448 5522
PN2.5 (MPa)
15 140 165 95 65 46 14 2 4-Φ14 150 218 354 4
20 152 190 105 75 56 14 2 4-Φ14 158 228 360 5
25 165 216 115 85 65 16 2 4-Φ14 166 245 374 7.5
32 178 229 140 100 76 18 2 4-Φ18 180 265 392 11.5
40 190 241 150 110 84 18 2 4-Φ18 195 290 416 16
50 216 292 165 125 99 20 2 4-Φ18 216 240 320 442 21 30
65 241 330 185 145 118 22 2 8-Φ18 234 260 355 475 28 39
80 283 356 200 160 132 24 2 8-Φ18 252 280 394 508 41 52
100 305 432 235 190 156 24 2 8-Φ23 278 308 445 552 58 72
125 381 508 270 220 184 26 2 8-Φ26 345 512 610 104
150 403 559 300 250 211 28 2 8-Φ26 390 592 686 180
200 502 660 360 310 274 30 2 12-Φ26 455 690 754 284
250 568 787 425 370 330 32 2 12-Φ30 528 790 826 390


Reminder:

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