Bawul ɗin ƙofar OS&Y mai jurewa mai aiki
Bayani:
Bawul ɗin ƙofar NRS mai jurewa mai aiki da tsarin AZBawul ɗin ƙofar wedge ne da kuma nau'in Tushen Rising (Outside Screw and Yoke), kuma ya dace da amfani da ruwa da ruwa mai tsaka-tsaki (najasa). Ana amfani da bawul ɗin ƙofar OS&Y (Outside Screw and Yoke) galibi a cikin tsarin feshin kariya daga gobara. Babban bambanci daga bawul ɗin ƙofar NRS (Non Rising Stem) na yau da kullun shine cewa an sanya bawul ɗin tushe da goro a wajen jikin bawul ɗin. Wannan yana sauƙaƙa ganin ko bawul ɗin a buɗe yake ko a rufe yake, domin kusan dukkan tsawon bawul ɗin yana bayyane lokacin da bawul ɗin yake buɗe, yayin da bawul ɗin tushe ba ya sake bayyana lokacin da bawul ɗin yake rufe. Gabaɗaya wannan buƙata ce a cikin waɗannan nau'ikan tsarin don tabbatar da saurin sarrafa yanayin tsarin.
Siffofi:
Jiki: Babu ƙirar tsagi, hana ƙazanta, tabbatar da ingantaccen rufewa. Tare da murfin epoxy a ciki, bi buƙatun ruwan sha.
Faifan: Firam ɗin ƙarfe mai layi na roba, tabbatar da rufe bawul ɗin kuma ya dace da buƙatun ruwan sha.
Tushen: An yi shi da kayan ƙarfi masu ƙarfi, tabbatar da cewa bawul ɗin ƙofar yana cikin sauƙin sarrafawa.
Ƙwayar tushe: Haɗin tushe da faifai, yana tabbatar da sauƙin aiki da faifai.
Girma:

| Girman mm (inci) | D1 | D2 | D0 | H | H1 | L | b | N-Φd | Nauyi (kg) |
| 65(2.5") | 139.7(5.5) | 178(7) | 182(7.17) | 126(4.96) | 190.5(7.5) | 190.5(7.5) | 17.53(0.69) | 4-19(0.75) | 25 |
| 80(3") | 152.4(6_) | 190.5(7.5) | 250(9.84) | 130(5.12) | 203(8) | 203.2(8) | 19.05(0.75) | 4-19(0.75) | 31 |
| 100(4") | 190.5(7.5) | 228.6(9) | 250(9.84) | 157(6.18) | 228.6(9) | 228.6(9) | 23.88(0.94) | 8-19(0.75) | 48 |
| 150(6") | 241.3(9.5) | 279.4(11) | 302(11.89) | 225(8.86) | 266.7(10.5) | 266.7(10.5) | 25.4(1) | 8-22(0.88) | 72 |
| 200(8") | 298.5(11.75) | 342.9(13.5) | 345(13.58) | 285(11.22) | 292(11.5) | 292.1(11.5) | 28.45(1.12) | 8-22(0.88) | 132 |
| 250(10") | 362(14.252) | 406.4(16) | 408(16.06) | 324(12.760) | 330.2(13) | 330.2(13) | 30.23(1.19) | 12-25.4(1) | 210 |
| 300(12") | 431.8(17) | 482.6(19) | 483(19.02) | 383(15.08) | 355.6(14) | 355.6(14) | 31.75(1.25) | 12-25.4(1) | 315 |







