Tha bhalbha geata a ’toirt iomradh air a’ bhalbhaiche aig a bheil a ’phàirt dùnaidh (geata) a’ gluasad air adhart gu taobh dìreach loidhne meadhan an t-seanail.Tha bhalbha geata air a chleachdadh sa mhòr-chuid airson gearradh san loidhne-phìoban.Tha comhla geata stàilinn cruthaichte na bhalbhaiche air a chleachdadh gu farsaing.Tha e air a chleachdadh sa chumantas airson innealan gearraidh le trast-thomhas de DN ≥ 50mm, agus uaireannan bidh bhalbhaichean geata air a chleachdadh cuideachd airson innealan gearraidh le trast-thomhas beag.Tha comhla geata, mar bhalbhag ìre ìosal, nas cumanta.
Feartan bhalbhaichean geata:
Coileanadh seulachaidh math, strì an aghaidh fluid beag agus coileanadh riaghlaidh sònraichte;Ach, tha meud mòr aige, structar iom-fhillte, giollachd duilich, caitheamh furasta de uachdar ròin, cumail suas duilich agus ùine fosglaidh is dùnaidh fada.Tha e freagarrach airson bhalbhaichean trast-thomhas mòr a dhèanamh.A bharrachd air smùid, ola agus meadhanan eile, tha e cuideachd freagarrach airson meadhanan anns a bheil solaidean granular agus slaodachd àrd, a bharrachd air bhalbhaichean airson fionnarachadh agus siostaman falamh ìosal.
CHAN EIL. | PÀIRT | Stuth ASTM | |||||
WCB | LCB | WC6 | CF8 (M) | CF3 (M) | |||
1 | COMHRADH | A216 WCB | A352 LCB | A217 WC6 | A351 CF8 (M) | A351 CF3 (M) | |
2 | GATE | A216 WCB + 13Cr | A352 LCB + 13Cr | A217 WC6 + STL | A351 CF8 (M) | A351 CF3 (M) | |
3 | SEAT | A105 + 13Cr | A105 + 13Cr | A217 WC6 + STL | A351 CF8 (M) + STL6 | A351 CF3 (M) + STL6 | |
4 | STEM | A182 F6 | A182 F6 | A182 F6 | A182 F304 / F316 | A182 F304L / F316L | |
5 | BONNET BOLT | A193 B7 | A320 L7 | A193 B16 | A193 B8 (M) | A193 B8 (M) | |
6 | BONNET NUT | A194 2H | A194 7 | A194 4 | A194 8 (M) | A194 8 (M) | |
7 | GASKET | SS304 + GRAPHITE | PTFE / SS304 + GRAPHITE | PTFE / SS316 + GRAPHITE | |||
8 | BONNET | A216 WCB | A352 LCB | A217 WC6 | A351 CF8 (M) | A351 CF3 (M) | |
9 | BACKSEAT | A182 F6 | A182 F6 | A182 F6 | - | - | |
10 | A ’PHACADH | GRAPHITE FLEXIBLE | GRAPHITE PTFE / FLEXIBLE | ||||
11 | GLAND | A182 F6 | A182 F6 | A182 F6 | A182 F304 | A182 F304L / F316L | |
12 | FLANGE GLAND | A216 WCB | A352 LCB | A217 WC6 | A351 CF8 (M) | A351 CF3 (M) | |
13 | EYEBOLT GLAND | A193 B7 | A193 B8 | A193 B8 | |||
14 | NUT | A194 2H | A194 8 | A194 8 | |||
15 | PIN | AISI 1025 | AISI 1025 | ||||
16 | STEM NUT | BRONZE | BRONZE | ||||
17 | HANDWHEEL NUT | AISI 1035 | AISI 1035 | ||||
18 | SCREW | ASTM A36 | ASTM A36 | ||||
19 | HANDWHEEL | A536 60-40-18 | A536 60-40-18 | ||||
20 | BEANNACHD GLAND | AISI 1035 | AISI 1035 | ||||
21 | NIPPLE GREIS | BRASS | BRASS | ||||
22 | AINM-ÀITE | SS304 | SS304 |
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 |