Nnwuma ho amanneɛbɔ .

Fluid temperature: High temperature fluids (above 450 ℃) should choose high-temperature resistant valves, such as chromium molybdenum steel high-temperature gate valves used in steam pipelines. Low temperature fluids (below -40 ℃) require valves with good low-temperature toughness, and low-temperature ball valves are commonly used in liquid nitrogen and liquid oxygen pipelines.

Butterfly valve yɛ valve bi a ɛde disc type a ɛbue ne nea ɛto mu no di dwuma de dannan ne ho kɔ anim ne akyi bɛyɛ digrii 90 ma ɛbue, to mu, anaa ɛhwɛ sɛnea nsu no sen wɔ medium no mu. Ɛnyɛ sɛ butterfly valve ahorow no wɔ nhyehyɛe a ɛnyɛ den, ne kɛse yɛ ketewaa, emu duru a emu yɛ hare, nneɛma a wɔde di dwuma kakraa bi, nea wɔde si hɔ ketewaa bi, torque a ɛba fam, adwumayɛ a ɛnyɛ den, ne ahoɔhare a ɛkɔ ntɛmntɛm, na mmom ɛwɔ nsu a ɛsen ho nhyehyɛe adwuma pa ne nsɔano su a wɔde to mu nso.

Wɔde ball valve di dwuma kɛse wɔ nnɛyi mfiridwuma mu nsu afiri nhyehyɛe mu esiane sɛ wɔde di dwuma pii, nsɔano a ɛkorɔn, ne sɛnea ɛyɛ mmerɛw sɛ wɔbɛyɛ adwuma nti.

Wɔ anyinam ahoɔden mfiri, ngo ne gas nhama, nsu nhyehyɛe, ne mfiridwuma mu dwumadi afoforo mu no, apon ano valve yɛ mfiri a ɛho hia a wɔde hwɛ nsu a ɛsen so.