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14. This one needs raw data lines are to close.

Gap in seat is in mm my vacuum cleaner water head max out at 1400 mm so the lower the better.

Note the air flow was backwards over the valve.

 

gap in seat 45 deg

valve std

valve ported

polished std

polished pitted

with head

0

1400

1400

 

 

 

0.203

1350

1352

 

 

 

0.381

1238

1212

1190

1175

1190

0.405

1230

1205

 

 

 

0.432

1198

1185

 

 

 

0.457

1185

1168

 

 

 

0.483

1175

1155

 

 

 

0.508

1160

1133

1142

1145

1168

0.533

1155

1130

 

 

 

0.559

1130

1120

1110

1125

1150

0.584

1115

1108

 

 

 

0.61

1080

1090

1060

1110

1130

0.711

1040

1015

1030

1025

1090

0.94

898

875

900

889

995

1.042

860

845

845

820

918

1.194

760

760

770

752

850

1.753

545

520

545

525

590

2.286

390

378

385

370

405

2.79

315

310

295

295

310

3.273

270

260

 

 

 

3.73

245

240

230

235

230

4.162

219

220

 

 

 

4.567

200

200

 

 

 

10

76

75

78

78

78

70

50

50

 

 

 

 

 

 

Was I wasting my time?