Valve Gasket Function & Application Guide

Deng valve gaskets dinisenyu la para aiwasan ing leaks a sangkan ning pressure, corrosion, ampo thermal expansion/contraction pilatan da reng components. Kabang halus egana ganang flangedkoneksyun's deng balbula mangailangan lang gasket, ing karelang partikular a aplikasyun ampo importansya miyayaliwa ya agpang keng uri ning balbula ampo disenyu. Kening section ayni,TWSmagpaliwanag ya kareng posisyun ning pamag-install kareng balbula ampo ing pamili kareng materyales ning gasket.

I. Ing mumunang aplikasyun da reng gaskets yapin ing flange joint da reng valve connections.

peka karaniwan a gagamitan a balbula

1. Gate Valve
2. Globe Valve
3. Balbula ning parul(lalu na ing concentric ampo ing double eccentric flanged butterfly valve)
4. Check valve

Kareng valve a reni, e ya magagamit ing gasket para keng pamag-regulate ning danum o pamag-sealing kilub ning valve mismu, pero maka-install ya pilatan da reng adwang flange (pilatan ning flange ning valve mismu ampo ing pipe flange). King pamaghigpit kareng bolts, sapat a clamping force ing gagawan para gawang static seal, a makaiwas keng leakage ning medium keng koneksyun. Ing kayang obra yapin ing punan no reng mangalating e pantas a gap pilatan da reng adwang metal a flange, para makasiguradung 100% ing pamagseal king koneksyun.

II.Pamaggamit ning Gasket keng Valve "Valve Cover"

Dakal a balbula ing dinisenyu da kareng miyayaliwang katawan ning balbula ampo takpan para mas mayan ing pamag-maintain (alimbawa, pamagpalit kareng luklukan da reng balbula, disc valves, o pamaglinis kareng basura), na kaybat mi-bolt la. kailangan ya ing gasket keng koneksyun ayni para siguraduan ing masipit a seal.

1. Ing koneksyun ning valve cover ampo ing valve body ning gate valve ampo ing globe valve keraklan mangailangan yang gasket o O-ring.
2. Ing gasket keng posisyun ayni magsilbi yang static seal para aiwasan ing medium a mag leak ibat keng valve body papunta keng atmosphere.

III. Espesyal a gasket para kareng partikular a uri ning balbula

Deng mapilan a balbula iyabe de ing gasket bilang dake ning karelang core sealing assembly, a dinisenyu para iyabe ya keng kilub ning istruktura ning balbula.

1. Balbula ning parul-valve seat gasket

• Ing luklukan ning butterfly valve metung yang ring gasket, na makadikit keng kilub ning pader ning valve body o maka-install keng paligid ning butterfly disc.
• nung ing paru parudiscmakasara ya, pindutan ne ing valve seat gasket para gawang dynamic seal (antimo ing butterflydiscmag-rotate).
• Ing materyales keraklan goma ya (alimbawa, EPDM, NBR, Viton) o PTFE, a dinisenyu para a-accommodate la reng miyayaliwang media ampo temperatura.

2. Ball Valve-Valve Seat Gasket

• Ing valve seat ning ball valve metung ya namang uri ning gasket, keraklan gawa ya kareng materyales antimo ing PTFE (polytetrafluoroethylene), PEEK (polyetheretherketone), o reinforced plastics.
• Iti mamye yang seal pilatan ning bola ampo ing katawan ning balbula, magsilbi yang pareung static seal (relative keng valve body) ampo dynamic seal (relative keng rotating ball).

IV. Nanu la reng balbula na e keraklan gagamitan kareng gasket?

1. Welded valves: Ing katawan ning valve diretsu yang welded keng pipeline, at e na kailangan ing flanges ampo gaskets.
2. Deng balbula a maki threaded a koneksyun: Keraklan gagamit lang threaded sealing (antimo ing raw material tape o sealant), keraklan e na kailangan ing gasket.
3. Monolithic valves: Deng mapilan a low-cost ball valves o specialized valves atin lang integral valve body na e malyaring i-disassemble, inya ala lang valve cover gasket.
4. Deng balbula a maki O-rings o metal-wrapped gaskets: Kareng matas a presyur, matas a temperatura, o special-medium a aplikasyun, deng advanced a solusyun king pamag-seal malyari lang palitan deng conventional a e metal a gaskets.

V. Summary:

Ing valve gasket metung yang uri ning general cutting key sealing element, maralas yang gagamitan keng pipeline connection da reng miyayaliwang flange valves, ampo magagamit ya keng valve cover sealing da reng dakal a valve. keng pamili, kailangan yang mamili ing ustung materyales ning gasket ampo ing porma agpang keng uri ning balbula, paralan ning pamagkonekta, medium, temperatura ampo pressure.