a) Bikozwe mu cyuma gikomeye, bisukurwa n'ubushyuhe bwinshi, birwanya ingese.
b) Ingufuri z'igishushanyo mbonera cy'igice kimwe zishobora guhindukiza kane imvange y'umupira mu mwanya wayo.
c) Ikoreshwa ku ngano za valve y'umupira kuva kuri 6.35mm (1/4”) kugeza kuri 25mm (1”), umurambararo w'umwobo ni 3/8”.
| Igice No. | Ibisobanuro |
| SBVL01 | Ingano: 84mm×60mm, umurambararo w'umwobo: 9.8mm |
| SBVL02 | Ingano: 155mm × 110mm, umurambararo w'umwobo: 9.8mm |
| SBVL02-2 | Ingano: 155mm × 110mm, umurambararo w'umwobo: 7.5mm |

