Valve sealing hi valve pumpuiah thil pawimawh tak a ni a, a tum ber chu leakage ven a ni a,valve chu a nisealing seat hi sealing ring an ti bawk a, hei hi pipeline chhunga medium nena inzawm tlat leh medium luang chhuak lo tura siamtu pawl a ni. Valve hman lai hian pipeline-ah hian media chi hrang hrang, liquid, gas, oil, corrosive media, etc. a awm a, valve hrang hrang seal te chu hmun hrang hrangah hman a ni a, medium hrang hrangah a insiamrem thei a ni.
TWSValvevalve seal-a thil siamte chu chi hnih-ah then theih a nih thu a hriat nawn tir che a, chungte chu metal material leh non-metal material te an ni. Non-metal seal hi pipeline-ah temperature leh pressure pangngaiah hman a ni tlangpui a, metal seal erawh chuan hmanna hrang hrang a nei a, temperature sang takah pawh hman theih a ni thung. pressure sang tak a ni.
Synthetic rubber hi natural rubber aiin oil resistance, temperature resistance leh corrosion resistance lamah a tha zawk. A tlangpuiin synthetic rubber hnathawhna temperature chu t≤ a ni150 a ni°C, natural rubber chu t≤ a ni60°C, leh rubber hi globe valve, gate valve, diaphragm valve, butterfly valve, check valve, pinch valve leh nominal pressure PN nei valve dangte seal nan hman a ni≤ a ni1MPa a ni.
2. Nylon a ni
Nylon hian friction coefficient tlem leh corrosion resistance tha tak a nei a. Nylon hi ball valve leh globe valve temperature t nei atan hman a ni ber≤ a ni90°C leh nominal pressure PN a ni≤ a ni32MPa a ni.
3. Polytetrafluoroethylene hmanga siam a ni
PTFE hi globe valve, gate valve, ball valve, etc. atan hman a ni ber a, temperature t≤ a ni232 a ni°C leh nominal pressure PN a awm bawk≤ a ni6.4MPa a ni.
4. Thir paih chhuah
Cast iron hi gate valve, globe valve, plug valve, etc. atan temperature t atan hman a ni≤ a ni100 a ni°C, nominal pressure PN a ni≤ a ni1.6MPa, gas leh oil a ni.
5. Babbitt alloy hmanga siam a ni
Babbitt alloy hi ammonia globe valve atan hman a ni a, temperature t-70~150 a ni°C a nileh nominal pressure PN te a ni≤ a ni2.5MPa a ni.
6. Copper alloy hmanga siam a ni
Copper alloy siamna atana hman tlanglawn tak chu 6-6-3 tin bronze leh 58-2-2 manganese brass te hi a ni. Copper alloy hian wear resistance tha tak a nei a, tui leh steam atan a tha a, temperature t≤ a ni200 a ni°C a nileh nominal pressure PN te a ni≤ a ni1.6MPa a ni. Gate valve, globe valve, check valve, plug valve, etc. ah te hman a ni fo.
7. Chrome stainless steel hmanga siam a ni
Chromium stainless steel grade hman tlanglawn tak chu 2Cr13 leh 3Cr13 te an ni a, quenched leh tempered an ni a, corrosion resistance tha tak an nei bawk. Tui, steam leh petroleum valve-ah temperature t neiah hman a ni fo≤ a ni450 a ni°C a nileh nominal pressure PN te a ni≤ a ni32MPa a ni.
8. Chrome-nickel-titanium hmanga siam a ni
Chromium-nickel-titanium stainless steel grade hman tlanglawn tak chu 1Cr18Ni9ti a ni a, hei hian corrosion resistance tha tak, erosion resistance leh heat resistance tha tak a nei a ni. Steam leh media dang temperature t nei atan a tha hle≤ a ni600 a ni°C leh nominal pressure PN a awm bawk≤ a ni6.4MPa a ni a, globe valve, ball valve, etc. atan hman a ni.
9. Nitriding steel hmanga siam a ni
Nitriding steel grade hman tlanglawn tak chu 38CrMoAlA a ni a, carburizing treatment hnuah pawh corrosion resistance tha tak leh scratch resistance tha tak a nei a ni. Power station gate valve-ah temperature t neiah hman a ni fo≤ a ni540 a ni°C a nileh nominal pressure PN te a ni≤ a ni10MPa a ni.
10. Boronizing tih a ni
Boronizing hian valve body emaw disc body emaw material atanga sealing surface chu direct in a process a, chutah chuan boronizing surface treatment a ti leh thin. Sealing surface hian wear resistance tha tak a nei a. Power station blowdown valve atan chuan.
Valve hman lai hian ngaihven tur thilte chu hetiang hi a ni.
1. Valve sealing performance chu a performance enfiah tur a ni.
2. Valve sealing surface chu a chhe tawh em tih enfiah la, a awm dan azirin siamthat emaw thlak emaw rawh.
Post hun chhung: Jan-04-2023
