Ivalvu yesango isho ivalvu ingxenye yayo yokuvala (isango) ehamba ngendlela eqondile yomugqa omaphakathi womzila.I-valve yesango isetshenziselwa ikakhulukazi ukusika epayipini.I-valve yesango lensimbi eyakhiwe iyi-valve esetshenziswa kabanzi.Ngokuvamile isetshenziselwa ukusika amadivaysi ane-diameter ye-DN ≥ 50mm, futhi ngezinye izikhathi i-valve yesango nayo isetshenziselwa ukusika amadivaysi ane-diameter encane.I-valve yesango, njenge-valve yezinga eliphansi, ivame kakhulu.
Izici ze-valve yesango:
Ukusebenza kahle kokubeka uphawu, ukumelana noketshezi oluncane kanye nokusebenza okuthile kokulawula;Kodwa-ke, inobukhulu obukhulu, isakhiwo esiyinkimbinkimbi, ukucubungula okunzima, ukugqoka okulula kokubeka uphawu, ukugcinwa okunzima kanye nesikhathi eside sokuvula nokuvala.Ilungele ukwenza ama-valve anobubanzi obukhulu.Ngaphezu kwe-steam, uwoyela kanye neminye imidiya, ibuye ifanele imidiya equkethe izinto eziqinile eziyimbudumbudu kanye ne-viscosity ephezulu, kanye nama-valve okukhipha umoya kanye nezinhlelo ze-vacuum eziphansi.
CHA. | INGXENYE | Izinto ze-ASTM | |||||
WCB | I-LCB | WC6 | I-CF8(M) | I-CF3(M) | |||
1 | UMZIMBA | A216 WCB | A352 LCB | A217 WC6 | I-A351 CF8(M) | I-A351 CF3(M) | |
2 | ISANGO | I-A216 WCB+13Cr | I-A352 LCB+13Cr | I-A217 WC6 + STL | I-A351 CF8(M) | I-A351 CF3(M) | |
3 | ISIHLALO | I-A105+13Cr | I-A105+13Cr | I-A217 WC6 + STL | I-A351 CF8(M)+STL6 | I-A351 CF3(M)+STL6 | |
4 | STEM | A182 F6 | A182 F6 | A182 F6 | I-A182 F304/F316 | I-A182 F304L/F316L | |
5 | BONNET BOLT | I-A193 B7 | A320 L7 | I-A193 B16 | I-A193 B8(M) | I-A193 B8(M) | |
6 | I-BONNET NUT | I-A194 2H | A194 7 | A194 4 | I-A194 8(M) | I-A194 8(M) | |
7 | I-GASKET | I-SS304+GRAPHITE | I-PTFE/SS304+GRAPHITE | PTFE/SS316+GRAPHITE | |||
8 | BONNET | A216 WCB | A352 LCB | A217 WC6 | I-A351 CF8(M) | I-A351 CF3(M) | |
9 | I-BACKSEAT | A182 F6 | A182 F6 | A182 F6 | - | - | |
10 | UKUPAKA | FLEXIBLE GRAPHITE | I-PTFE/FLEXIBLE GRAPHITE | ||||
11 | IGLAND | A182 F6 | A182 F6 | A182 F6 | I-A182 F304 | I-A182 F304L/F316L | |
12 | IGANDA FLANGE | A216 WCB | A352 LCB | A217 WC6 | I-A351 CF8(M) | I-A351 CF3(M) | |
13 | I-GLAND EYEBOLT | I-A193 B7 | A193 B8 | A193 B8 | |||
14 | I-NUT | I-A194 2H | A194 8 | A194 8 | |||
15 | I-PIN | I-AISI 1025 | I-AISI 1025 | ||||
16 | I-STEM NUT | ITHUSI | ITHUSI | ||||
17 | I-HANDWHEEL NUT | I-AISI 1035 | I-AISI 1035 | ||||
18 | ISIKUKU | I-ASTM A36 | I-ASTM A36 | ||||
19 | ISANDLA | I-A536 60-40-18 | I-A536 60-40-18 | ||||
20 | UKUTHWALA IMIDLALO | I-AISI 1035 | I-AISI 1035 | ||||
21 | INGONI YOGCOBA | ITHUSI | ITHUSI | ||||
22 | NAMEPLATE | I-SS304 | I-SS304 |
I-NPS | 2 | 2½ | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 |
L | 250 | 270 | 280 | 300 | 325 | 350 | 400 | 450 | 500 | 550 | 600 | 650 | 700 | 800 |
D | 165 | 185 | 200 | 235 | 270 | 300 | 360 | 425 | 485 | 555 | 620 | 670 | 730 | 745 |
b | 20 | 22 | 24 | 24 | 26 | 28 | 30 | 32 | 34 | 38 | 40 | 46 | 48 | 58 |
nd | 4-20 | 8-22 | 8-24 | 8-24 | 8-26 | 8-28 | 12-30 | 12-32 | 16-34 | 16-38 | 16-40 | 20-46 | 20-48 | 20-58 |