口徑DN^a

a_min

b_min

L^b(優(yōu)選）

L^b（可選）

W₁;W₂

H₁

H₂

15

10

12

165

80,85,100,105,110,114,115,130,

135,145,170,175,180,190,200,220

65

60

220

20

12

14

190

105,110,115,130,134,135,165,175,

195,200,220,229

65

60

240

25

12

16

260

110,150,175,200,210,225,273

100

65

260

32

13

18

260

110,150,175,200,230,270,300,321

110

70

280

40

13

20

300

200,220,245,260,270,387

120

75

300

50

200

170,245,250,254,270,275,300,

345,350

135

216

390

65

200

170,270,300,450

150

130

390

80

200

190,225,300,305,350,425,500

180

343

410

100

250

210,280,350,356,360,375,450,,650

225

356

440

125

250

220,275,300,350,375,450

135

140

440

150

300

230,325,350,450,457,500,560

267

394

500

200

350

260,400,500,508,550,600,620

349

406

500

250

450

330,400,600,660,800,

368

521

500

300

500

380,400,800

394

533

533

350

500

420,800

270

300

500

400

600

500,550,800

290

320

500

500

600

500,625,680,770,800,900,1000

365

380

520

600

800

500,750,820,920,1000,1200

390

450

600

800

1200

600

510

550

700

＞800

1.25×DN

DN

0.65×DN

0.65×DN

0.75×DN

aDN：法蘭連接端和螺紋連接端的公稱通徑。

b長度公差：DN15～DN40：0-2mm;

DN50～DN300：0-3mm;

DN350～DN400：0-5mm。

DN400以上水表的長度公差應(yīng)由用戶與制造廠協(xié)商確定。