Valve siamna atana sealing material hman tlanglawn ber berte chu engte nge ni?

Valve chi hrang hrang a awm a, mahse a hnathawh bulpui chu a inang vek a, chu chu medium flow connect emaw cut off emaw a ni. Chuvangin, valve sealing problem hi a langsar hle.

Valve hian medium flow chu leakage awm lovin a cut off tha thei tur chuan valve seal chu a tha tawk em tih enfiah a ngai a ni. Valve leakage chhan tam tak a awm a, chung zingah chuan structural design dik lo, sealing contact surface chhia, fastening parts loose, valve body leh bonnet inkar loose fit, etc. Heng harsatna zawng zawng hian valve sealing tha lo a thlen thei a ni. Awle, chutiang chuan leak problem a siam ta a ni. Chuvangin, valve sealing technology hi valve performance leh quality nena inzawm technology pawimawh tak a ni a, systematic leh in-depth research a ngai a ni.

Valve atana sealing material hman tlanglawn tak takte chu a hnuaia chi hrang hrangte hi an ni:

1. NBR a ni

Oil resistance tha tak, wear resistance sang tak, heat resistance tha tak, adhesion chak tak. A that lohna chu low temperature resistance tha lo, ozone resistance tha lo, electrical property tha lo, leh elasticity hniam deuh te hi a ni.

2. EPDM a ni

EPDM thil pawimawh ber chu oxidation resistance, ozone resistance leh corrosion resistance tha zawk a ni. EPDM hi polyolefin chhungkaw zinga mi a nih avangin vulcanization characteristic tha tak a nei a ni.

3. PTFE a ni

PTFE hian chemical resistance chak tak a nei a, oil leh solvent tam zawk (ketones leh esters tih loh chu a do thei), khaw lum leh ozone resistance tha tak a nei a, mahse khaw lum do theihna a nei tha lo hle.

4. Thir paih chhuah

Note: Cast iron hi tui, gas leh oil media atan hman a ni a, a temperature chu≤ a ni100 a ni°C leh a nominal pressure of≤ a ni1.6mpa a ni.

5. Nickel hmanga siam alloy

Note: Nickel-based alloy hi pipeline -70~150 temperature nei tan hman a ni°C leh engineering pressure PN a ni≤ a ni20.5mpa a ni.

6. Copper alloy hmanga siam a ni

Copper alloy hian wear resistance tha tak a nei a, tui leh steam pipe temperature nei tan pawh a tha hle≤ a ni200 a ni°C a nileh nominal pressure PN te a ni≤ a ni1.6mpa a ni.