UL muri Valves

I. Icyemezo cya UL ni iki? Kuki valve ikenewe?

UL (Underwriters Laboratories) ni ikigo kizwi ku isi mu gutanga ibyemezo by’umutekano. Ku isoko rya Amerika y'Amajyaruguru, icyemezo cya UL si itegeko rya leta, ariko ni "ikarita yo kwinjira" mu kurinda inkongi, gazi, kugenzura inganda n'ibindi. Amasoko menshi y'imishinga yo muri Amerika asaba ko "Valve igomba kuba iri ku rutonde rwa UL". Ku bavali, bigaragaza ko ibicuruzwa byujuje ibisabwa ku mutekano w'amashanyarazi, ibyago by'inkongi n'imimerere ikabije yo gukoreramo. Ni icyemezo cy'ingenzi cyo kwinjira ku isoko ryo ku rwego rwo hejuru muri Amerika y'Amajyaruguru no kwitabira gupiganwa mu mishinga.

II.Ni ibihe bipimo ngenderwaho by’icyitegererezo cya UL ku bijyanye n’amashanyarazi bishingiyeho?

Valve zikoreshwa mu ntego zitandukanye zikoreshwa ku bipimo bitandukanye:

- UL 429:Ku bijyanye na valve zikoreshwa n'amashanyarazi (nk'imashini zikoresha amashanyarazi), suzuma uburyo zikingira amashanyarazi, kwiyongera k'ubushyuhe, igihe zimara zikora, n'ibindi.

- UL 842:Amasafuriya yo kugenzura ubushyuhe n'intoki, atwikiriye ibinyabiziga bigurumana n'ibishya (lisansi, mazutu, lisansi, n'ibindi).

- Valves zo gutwika: valve zo mu irembo, valve z'ibinyugunyugu, valve yo kugenzuran'ibindi bigomba kubahiriza amabwiriza ya UL 262, UL 1091 n'andi, kandi ibizamini birimo gupima ingaruka z'umuvuduko mwinshi n'inkongi y'umuriro. Byongeye kandi, hari amabwiriza yihariye nka UL 842B ku mavali ya mazutu/biodiesel.

III.Ni iki kibanda ku igeragezwa rya UL?

Ishingiro ni ukugenzura "umutekano mubi cyane". Uretse kurwanya umuvuduko no gufunga, hakwiye kwitabwaho cyane:

- Umutekano w'amashanyarazi:gukingira imiyoboro y'amashanyarazi, uburyo bwo gucika intege, gutakaza imiterere y'amashanyarazi.

- Imiterere ikabije y'akazi:ubushobozi bwo gukora n'imikorere yo gusaza kw'ibikoresho mu bushyuhe buri hagati ya -29°C na 52°C.

- Irinde kunanirwa:biganisha ku byago byo gukoresha nabi cyangwa gusaza kw'ibikoresho.