Valve sealing material hi valve sealing atana thil pawimawh tak a ni. Valve sealing materials te hi engte nge ni? Valve sealing ring materials hi chi hnih ah then a ni tih kan hria a, chungte chu metal leh non-metal te an ni. A hnuaia tarlan te hi sealing material hrang hrang hman dan tur tawi te te, chubakah valve chi hrang hrang hman tlanglawn dan te a ni.
1. Rubber siam chhuah
Synthetic rubber hian a comprehensive property te chu oil resistance, temperature resistance leh corrosion resistance te hi natural rubber aiin a tha zawk a ni. A tlangpuiin synthetic rubber hmanna temperature chu t≤150°C a ni a, natural rubber hmanna temperature chu t≤60°C a ni.Rubber hi globe valve seal nan hman a ni a,rubber hmanga thut gate valve, diaphragm valve te, .ruber thutna butterfly valve, ruber thutna swing check valve a ni (check valve te a awm bawk), pinch valve leh valve dangte chu nominal pressure PN≤1MPa nei te an 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≤90°C leh nominal pressure PN≤32MPa nei tan hman a ni ber.
3. PTFE a ni
PTFE hi globe valve atan hman a ni ber a, .gate valve te a awm bawk, ball valve, etc. te chu temperature t≤232°C leh nominal pressure PN≤6.4MPa nei te an ni.
4. Thir paih chhuah
Cast iron hman a nigate valve a ni, globe valve, plug valve, etc. te chu temperature t≤100°C, nominal pressure PN≤1.6MPa, gas leh oil te tan a ni.
5. Babbitt alloy hmanga siam a ni
Babbitt alloy hi ammonia globe valve atan hman a ni a, temperature t-70~150°C leh nominal pressure PN≤2.5MPa 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≤200°C leh nominal pressure PN≤1.6MPa a nei bawk. In hman a ni fogate valve te a awm bawk, globe valve te, .check valve te a awm bawk, plug valve te, etc. te a ni.
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 ang chi media atana valve-ah te hman a ni fo a, temperature t≤450°C leh nominal pressure PN≤32MPa a ni.
8. Chromium-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, nitric acid leh media dang temperature t≤600°C leh nominal pressure PN≤6.4MPa nei tan a tha a, globe valve, ball valve, etc. atan hman a ni.
9. Nitrided steel hmanga siam a ni
Nitrided 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-a hman tlanglawn tak, temperature t≤540°C leh nominal pressure PN≤10MPa nei.
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 a, sealing surface hian wear resistance tha tak a nei a ni. Power station blowdown valve ah hman thin a ni.
Post hun chhung: Jun-10-2022
