1. Kukula
Magulu a DN akuphatikizapo DN15mm~600mm(1/2”~24”) ndi PN ranges kuchokera ku PN1.6MPa~20MPa(ANSI CLASS150~1500) ya ulusi, flanged, BW ndi SW swing ndi valavu yokweza cheke.
2. Kugwiritsa Ntchito:
2.1 Vavu iyi ndikuletsa kuthamangira kwapakati kumbuyo mu dongosolo la chitoliro.
2.2 Zinthu za valve zimasankhidwa molingana ndi sing'anga.
2.2.1WCB vavu ndi yoyenera madzi, nthunzi ndi sing'anga mafuta etc.
Vavu ya 2.2.2SS ndi yoyenera kwa sing'anga ya dzimbiri.
2.3 Kutentha:
2.3.1Wamba WCB ndi oyenera kutentha -29 ℃ ~+425 ℃
2.3.2 Aloyi valavu ndi oyenera kutentha ≤550 ℃
2.3.3SS vavu ndi oyenera kutentha-196 ℃ ~+200 ℃
3. Mapangidwe ndi machitidwe a machitidwe
3.1 Mapangidwe oyambira ndi awa:
3.2 PTFE ndi graphite kusinthasintha anatengera kwa damageable gasket kuonetsetsa kusindikiza ntchito.
(A) Kuwotchera kumangiriza valavu yonyamulira yodzitchinjiriza
(B) Kuwotcherera valavu yokweza yokweza
(C) BW Lifting Check Valve (D) Flanged Check Valve
- Thupi 2. Chimbale 3. Shaft 4. Gasket 5. Bonnet
(E) BW Swing Check Vavu
(F) Flanged Swing Check
3.3 Zida Zazigawo Zazikulu
| Dzina | Zakuthupi | Dzina | Zakuthupi |
| Thupi | Carbon Steel, SS, Aloyi Zitsulo | Pin Shaft | SS, Cr13 |
| Chisindikizo Chapampando | Surfacing13Cr, STL, Rubber | Goli | Carbon Steel, SS, Aloyi Zitsulo |
| Chimbale | Carbon Steel, SS, Aloyi Zitsulo | Gasket | PTFE, Flexible Graphite |
| Rocker Arm | Carbon Steel, SS, Aloyi Zitsulo | Boneti | Carbon Steel, SS, Aloyi Zitsulo |
3.4 Tchati cha Ntchito
| Muyezo | Mayeso amphamvu (MPa) | Seal test (MPa) | Mayeso a Air seal (MPa) |
| Gawo 150 | 3.0 | 2.2 | 0.4-0.7 |
| Gawo 300 | 7.7 | 5.7 | 0.4-0.7 |
| Gawo 600 | 15.3 | 11.3 | 0.4-0.7 |
| Gawo 900 | 23.0 | 17.0 | 0.4-0.7 |
| Gawo la 1500 | 38.4 | 28.2 | 0.4-0.7 |
| Muyezo | Mayeso amphamvu (MPa) | Seal test (MPa) | Mayeso a Air seal (MPa) |
| 16 | 2.4 | 1.76 | 0.4-0.7 |
| 25 | 3.75 | 2.75 | 0.4-0.7 |
| 40 | 6.0 | 4.4 | 0.4-0.7 |
| 64 | 9.6 | 7.04 | 0.4-0.7 |
| 100 | 15.0 | 11.0 | 0.4-0.7 |
| 160 | 24.0 | 17.6 | 0.4-0.7 |
| 200 | 30.0 | 22.0 | 0.4-0.7 |
4. Chiphunzitso cha ntchito
Chongani valavu imatsegula ndikutseka chimbale kuti chiteteze kuthamangira cham'mbuyo ndikuyenda kwapakati.
5. Miyezo yovomerezeka ya vavu koma osati ku:
(1) API 6D-2002 (2) ASME B16.5-2003
(3) ASME B16.10-2000 (4) API 598-2004
(5) GB/T 12235-1989 (6) GB/T 12236-1989
(7) GB/T 9113.1-2000 (8) GB/T 12221-2005 (9) GB/T 13927-1992
6. Kusungirako & Kukonza & Kuyika & Ntchito
6.1 Vavu iyenera kusungidwa m'chipinda chowuma komanso chodutsa mpweya wabwino.
6.2 Mavavu omwe amasungidwa nthawi yayitali ayenera kuyang'aniridwa ndikutsukidwa nthawi zonse, makamaka nkhope yokhala pansi kuti isawonongeke, ndipo nkhope yokhala pansi iyenera kuphimbidwa ndi dzimbiri loletsa mafuta.
6.3 Kuyika ma valve kumayenera kufufuzidwa kuti zigwirizane ndi kagwiritsidwe ntchito.
6.4 Mphepete mwa valve ndi malo osindikizira ayenera kufufuzidwa musanayike ndikuchotsa dothi ngati liripo.
6.5 Njira yolowera muvi iyenera kukhala yofanana ndi njira yolowera.
6.6 Kukweza valavu yoyang'ana ma disc iyenera kuyikidwa molunjika ku payipi. Valovu yokweza yopingasa disc iyenera kuyikidwa molunjika ku payipi.
6.7 Kugwedezeka kuyenera kuyang'aniridwa ndipo kusintha kwapaipi yapakati papaipi kuyenera kudziwidwa kuti tipewe zotsatira za madzi.
- Mavuto omwe angakhalepo, zoyambitsa ndi njira yothanirana ndi vutoli
| Mavuto Otheka | Zoyambitsa | Muyeso Wothandizira |
| Chimbale sichingatsegule kapena kutseka |
| |
| Kutayikira |
| |
| Phokoso ndi Kugwedezeka |
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8. Chitsimikizo
Vavu ikagwiritsidwa ntchito, nthawi ya chitsimikizo cha valavu ndi miyezi 12, koma sichidutsa miyezi 18 kuchokera tsiku lobadwa. Pa nthawi ya chitsimikizo, wopanga adzapereka ntchito yokonza kapena zida zosinthira kwaulere chifukwa cha kuwonongeka kwa zinthu, kapangidwe kake kapena kuwonongeka ngati ntchitoyo ili yolondola.
Nthawi yotumiza: Nov-10-2020