1. Belofo ea serurubele ea EN593 ke eng?
Serurubele sa EN593 se bolela valve ea tšepe e entsoeng le ho etsoa ho latela maemo a BS EN 593:2017, e bitsoang "Industrial Valves - General Metal Butterfly Valves." Tekanyetso ena e phatlalalitsoe ke British Standards Institution (BSI) mme e hokahana le litekanyetso tsa Europe (EN), e fana ka moralo o felletseng oa moralo, lisebelisoa, boholo, tlhahlobo le ts'ebetso ea li-valve tsa serurubele.
Li-valve tsa EN593 tsa serurubele li khetholloa ka 'mele ea tsona ea tšepe ea tšepe le mekhoa e fapaneng ea ho hokahanya, joalo ka mofuta oa wafer, mofuta oa lug kapa o habeli. Li-valve tsena tsa serurubele li ka sebetsa tlas'a khatello e fapaneng le maemo a mocheso. Tekanyetso ena e netefatsa hore li-valve li fihlela litlhoko tse thata bakeng sa polokeho, ho tšoarella, ho lumellana le ho ts'epahala.
2. Lintlha tsa Bohlokoa tsa EN593 Butterfly Valves
* Ts'ebetso ea Quarter-turn: Li-valve tsa serurubele li sebetsa ka ho potoloha valve disc 90 degrees, e nolofalletsang taolo ea phallo e potlakileng le e sebetsang.
* Moralo o momahaneng: Ha o bapisoa le li-valve tsa heke, li-valve tsa bolo, kapa li-valve tsa lefatše, li-valve tsa serurubele li bobebe ebile li boloka sebaka, e leng se etsang hore e be tse loketseng bakeng sa ho kenngoa ha sebaka se lekanyelitsoeng.
* Likhokahano tse fapaneng tsa pheletso: E fumaneha ka liphaephe, mekotla, li-flange tse habeli, flange e le 'ngoe kapa meralo ea mofuta oa U, e tsamaellanang le lits'ebetso tse fapaneng tsa lipeipi.
* Khanyetso ea kutu: E entsoe ka thepa ea boleng bo holimo e sa jeng ho netefatsa hore e tšoarella libakeng tse senyang.
* Torque e tlase: E etselitsoe ho fokotsa litlhoko tsa torque, e nolofalletsang othomathike ka li-actuator tse nyane le ho theola litšenyehelo.
* Ho tiisoa ha Zero-Leakage: Li-valve tse ngata tsa EN593 li na le litulo tse bonolo kapa litulo tsa tšepe, tse fanang ka tiiso e tiileng ea bubble bakeng sa ts'ebetso e tšepahalang.
3. BS EN 593: 2017 Lintlha tse Tloaelehileng
Ho tloha ka 2025, standard ea BS EN 593 e amohela mofuta oa 2017. EN593 ke tataiso e akaretsang bakeng sa li-valve tsa tšepe tsa serurubele, e hlalosang bonyane litlhoko tsa moralo, lisebelisoa, boholo le liteko. Se latelang ke kenyelletso e qaqileng ea litaba tse ka sehloohong tsa maemo, tse tšehetsoeng ke data ea indasteri.
3.1. Bophara ba maemo
TS EN 593: 2017 e sebetsa ho li-valve tsa tšepe tsa serurubele molemong oa kakaretso, ho kenyelletsa ho itšehla thajana, taolo, kapa taolo ea phallo ea mokelikeli. E koahela mefuta e fapaneng ea li-valve tse nang le likhokahano tsa pheletso ea liphaephe, joalo ka:
* Mofuta oa Wafer: E patiloe lipakeng tsa li-flange tse peli, e nang le sebopeho se kopaneng le moralo o bobebe.
* Mofuta oa Lug: E na le masoba a kentsoeng a khoele, a loketseng ho sebelisoa lipheletsong tsa liphaephe.
* E nang le liphahlo tse peli: E na le li-flanges tse kopantsoeng, tse koaletsoeng ka ho toba liphaepheng tsa lipeipi.
* E nang le flange e le 'ngoe: E na le li-flange tse kopantsoeng haufi le axis e bohareng ea 'mele.
* Mofuta oa U: Mofuta o ikhethileng oa valve ea mofuta oa wafer e nang le lipheletso tse peli tsa flange le litekanyo tse kopaneng tsa sefahleho le sefahleho.
3.2. Khatello le Boholo Range
TS EN 593: 2017 e totobatsa likhatello le boholo ba li-valve tsa serurubele:
* Litekanyo tsa khatello:
- PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160 (Litekanyetso tsa khatello ea Europe).
- Sehlopha sa 150, Sehlopha sa 300, Sehlopha sa 600, Sehlopha sa 900 (litekanyetso tsa khatello ea ASME).
* Boholo ba mefuta:
- DN 20 ho isa ho DN 4000 (bophahamo ba lebitso, bo ka bang 3/4 inch ho isa ho 160 inches).
3.3. Litlhoko tsa Moralo le Tlhahiso
Tekanyetso ena e totobatsa mekhoa e ikhethileng ea moralo ho netefatsa ho ts'epahala le ts'ebetso ea valve:
* Lisebelisoa tsa 'mele oa valve: Li-valve li tlameha ho etsoa ka thepa ea tšepe e kang ductile iron, carbon steel (ASTM A216 WCB), tšepe e sa hloekang (ASTM A351 CF8/CF8M), kapa boronse ba aluminium (C95800).
* Moralo oa li-valve disc: The valve disc e ka ba bohareng kapa eccentric (ho fokotsa ho roala ha setulo le torque).
* Thepa ea setulo sa li-valve: Litulo tsa li-valve li ka 'na tsa etsoa ka thepa e otlolohileng (joalo ka rabara kapa PTFE) kapa lisebelisoa tsa tšepe, ho itšetlehile ka kopo. Litulo tse khathollang li fana ka tiiso ea zero-leakage, ha litulo tsa tšepe li tlameha ho mamella mocheso o phahameng le ho senya ho phaella ho finyella ho lutla ha zero.
* Litekanyo tsa sefahleho le sefahleho: E tlameha ho lumellana le litekanyetso tsa EN 558-1 kapa ISO 5752 ho netefatsa hore e tsamaellana le lits'ebetso tsa lipeipi.
* Litekanyo tsa Flange: E lumellana le litekanyetso tse kang EN 1092-2 (PN10/PN16), ANSI B16.1, ASME B16.5, kapa BS 10 Tafole D/E, ho itšetlehile ka mofuta oa valve.
* Actuator: Li-valve li ka sebetsoa ka letsoho (ho tšoara kapa lebokose la gear) kapa tsa sebetsa ka bo eona (pneumatic, motlakase, kapa hydraulic actuator). Flange e holimo e tlameha ho latela litekanyetso tsa ISO 5211 ho thusa ho kenya actuator e tloaelehileng.
3.4. Tlhahlobo le Tlhahlobo
Ho netefatsa boleng le ts'ebetso, BS EN 593: 2017 e hloka tlhahlobo e matla:
* Teko ea khatello ea Hydraulic: E netefatsa hore valve ha e lutle ka khatello e boletsoeng.
* Teko ea ts'ebetso: E netefatsa ts'ebetso e bonolo le torque e nepahetseng tlasa maemo a etsisitsoeng.
* Teko ea ho lutla: Netefatsa ho tiisoa ha setulo sa li-valve ka thata ka bubble ho latela litekanyetso tsa EN 12266-1 kapa API 598.
* Setifikeiti sa Tlhatlhobo: Moetsi o tlameha ho fana ka litlaleho tsa tlhahlobo le tlhahlobo ho netefatsa hore e lumellana le litekanyetso.
3.5. Lisebelisoa tsa EN593 Butterfly Valves
* Tlhokomelo ea Metsi: Laola le ho arola ho phalla ha metsi a sa tšoaneng a hloekileng, a leoatle, kapa a litšila. Lisebelisoa le lirafshoa tse thibelang ho bola li etsa hore li tšoanelehe bakeng sa tikoloho e thata.
* Liindasteri tsa Lik'hemik'hale le tsa Petroli: Ho sebetsana le maro a senyang a kang li-acids, alkalis, le solvents, a rua molemo ka thepa e kang litulo tsa PTFE le li-disc tsa valve tse nang le PFA.
* Oli le Khase: Ho laola maro a khatello e phahameng, a mocheso o phahameng liphaepheng, lihloekising le lipolaneteng tse kantle ho naha. Moralo oa li-double offset o ratoa ka lebaka la ho tšoarella ha oona tlas'a maemo ana.
* Lits'ebetso tsa HVAC: Ho laola phallo ea moea, metsi, kapa sehatsetsi ka har'a lisebelisoa tsa ho futhumatsa le tse futhumatsang.
* Ho hlahisa motlakase: Ho laola mouoane, metsi a pholileng, kapa maro a mang a femeng a motlakase.
* Liindasteri tsa lijo le tsa meriana: Ho sebelisa thepa e lumellanang le FDA (e kang PTFE le EPDM e tiisitsoeng ke WRA) ho netefatsa ts'ebetso e sa silafalitsoeng le ho finyella litekanyetso tsa bohloeki.
3.6. Tlhokomelo le Tlhahlobo
Ho netefatsa ts'ebetso ea nako e telele, li-valve tsa EN593 tsa serurubele li hloka tlhokomelo e tloaelehileng:
* Khafetsa ea ho hlahloba: Lekola likhoeli tse ling le tse ling tse tšeletseng ho isa ho selemo bakeng sa ts'ebetso, ho bola, kapa mathata a ts'ebetso.
* Lubrication: Fokotsa ho hohlana le ho lelefatsa bophelo ba valve.
* Tlhahlobo ea Setulo sa Valve le Seal: Netefatsa botšepehi ba litulo tsa rekere kapa tsa tšepe ho thibela ho lutla.
* Tlhokomelo ea Lichelete: Netefatsa hore li-actuator tsa pneumatic kapa tsa motlakase ha li na litšila ebile li sebetsa ka mokhoa o tloaelehileng.
4. Papiso le Maemo a Mang API 609
Leha BS EN 593 e sebetsa bakeng sa ts'ebeliso e akaretsang ea indasteri, e fapana le maemo a API 609, a etselitsoeng ts'ebeliso ea oli le khase ka kotloloho. Liphapang tse kholo li kenyelletsa:
* Tsepamiso ea ts'ebeliso: API 609 e shebane le tikoloho ea oli le khase, ha BS EN 593 e akaretsa mefuta e mengata e fapaneng ea liindasteri, ho kenyeletsoa tlhoekiso ea metsi le tlhahiso e akaretsang.
* Litekanyetso tsa khatello: API 609 hangata e akaretsa Sehlopha sa 150 ho isa ho 2500, ha BS EN 593 e kenyelletsa PN 2.5 ho isa PN 160 le Sehlopha sa 150 ho isa ho 900.
* Moralo: API 609 e totobatsa lisebelisoa tse hananang le kutu ho mamella maemo a thata, athe BS EN 593 e lumella khetho ea thepa e feto-fetohang haholoanyane.
* Teko: Litekanyetso ka bobeli li hloka tlhahlobo e matla, empa API 609 e kenyelletsa litlhoko tse ling bakeng sa moralo o hananang le mollo, o bohlokoa haholo lits'ebetsong tsa oli le khase.
5. Qetello
| Sebopeho | Lintlha tsa Bohlokoa li hlalosoa ke EN 593 |
| Mofuta oa Valve | Li-valve tsa tšepe tsa serurubele |
| Tshebetso | Manual, gear, pneumatic, motlakase |
| Litekanyo tsa Sefahleho le Sefahleho | Joalo ka EN 558 Series 20 (wafer/lug) kapa Series 13/14 (flanged) |
| Khatello Rating | Ka tloaelo PN 6, PN 10, PN 16 (e ka fapana) |
| Mocheso oa Moqapi | E itšetlehile ka thepa e sebelisoang |
| Ho lumellana ha Flange | EN 1092-1 (PN flanges), ISO 7005 |
| Litekanyetso tsa Teko | TS EN 12266-1 liteko tsa khatello le ho lutla |
Tekanyetso ea BS EN 593: 2017 e fana ka moralo o matla bakeng sa moralo, tlhahiso le tlhahlobo ea li-valve tsa tšepe tsa serurubele, ho netefatsa ts'epahalo, polokeho le ts'ebetso ea tsona lits'ebetsong tse fapaneng tse fapaneng. Ka ho ikamahanya le litlhoko tsa maemo bakeng sa likhatello tsa khatello, mefuta ea boholo, lisebelisoa le liteko, bahlahisi ba ka hlahisa li-valve tse finyellang litekanyetso tsa boleng ba lefats'e.
Hore na o hloka li-valve tsa mofuta oa wafer, mofuta oa lug, kapa li-valve tsa serurubele tse nang le flanged habeli, ho latela maemo a EN 593 ho netefatsa khokahano e se nang seam, ho tšoarella, le taolo e sebetsang ea mokelikeli.