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Raccords d'éléments de membrane RO pour le traitement de l'eau
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Raccords de tuyauterie en PVDF de haute qualité pour applications industrielles et de haute pureté
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Joints alimentés par ressort utilisés pour la vanne cryogénique
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Pièces usinées en plastique PTFE, PEEK, PCTFE,TFM
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Rod rempli de carbone de PTFE et PTFE rempli de fibre de verre utilisé pour le cachetage de valve
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Tube PFA de haute pureté utilisé pour les semi-conducteurs (Semi-57 réussi)
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Fabricant de feuilles PVDF en Chine
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Tige KEL-F PCTFE utilisée pour l'étanchéité des vannes cryogéniques
Sièges de robinet à tournant sphérique utilisés pour le GNL
Gamme de spécifications
Ball Valve Seat and Seal Rings
The most common fluoropolymer application is used as sealing material for Valves. We provide valve seats,seat inserts, thrust washers and backup rings, stem packings by wide range of materials, such as PTFE, filled PTFE, TFM , PCTFE, PEEK，Vespel®, PCTFE, PI, Nylon and Acetal.
Over the years, based on our own advantages in the field of high performance polymer materials, We've been working with valve customers all over the world to manufacture various soft seals & seats.
| Choix des matériaux | Propriétés principales | Plage de température |
| PTFE vierge | Très faible coefficient de frottement et excellente résistance chimique. | -40 ° C à 260 ° C |
| 15% and 25% Glass Filled PTFE | Decreased compressive strength and lower deformation under load than virgin PTFE. Better wear resistance, higher compressive strength and lower deformation under load. | -40 ° C à 260 ° C |
| 5%,15% and 25% Carbon Filled PTFE | Improved mechanical strength compared with virgin PTFE. Excellent wear properties, retains excellent frictional properties, good choice for seals and rings in dynamic and high-pressure applications | -40 ° C à 260 ° C |
| 5% MoS2 Filled PTFE | Propriétés accrues du PTFE en termes de dureté et de résistance à l'usure. Propriétés de glissement accrues et diminution de la friction. | -40 ° C à 260 ° C |
| PTFE chargé en acier inoxydable | Extremely hard wearing. Excellent strength and stability under extreme loads and elevated temperatures. | -40 ° C à 260 ° C |
| TFM Series | Much denser polymer structure than Virgin PTFE. Displays better stress recovery. | -80 ° C à 260 ° C |
| PCTFE | Ideal sealing material for lower temperature and high pressure, good mechanical properties. Excellent for LNG, Cryogenic and Oxygen use. | -240 ° C à 120 ° C |
| PEEK | Excellent chemical resistance and mechanical properties at elevated temperatures. | -40 ° C à 260 ° C |
| PEEK chargé de carbone | Many similar properties to Virgin PEEK. Particularly suitable for elevated temperatures and high load situations. | -40 ° C à 260 ° C |
| PFA | Excellent chemical and temperature resistance, electrical insulation properties | -100 ° C à + 260 ° C |
| UHMWPE | Highly resistant to corrosive chemicals, with the exception of oxidising acids and organic solvents. | -60 ° C à + 80 ° C |
| Acétal et Delrin | Good resistance to wear and deformation under load. | jusqu'à 80 ° C |
| PI (Polyimide) | Significantly higher modulus, excellent wear and friction properties, good thermal-oxidative stability and high mechanical strength | jusqu'à 320 ° C |
| Customized Material by HONGDA | Designed & produced as per specific applications | / |
Hongda provide valve seats materials (PTFE, TFM, filled PTFE, PCTFE, PEEK,UHMW, Vespel®)- seats and seals for all types of valves including ball valves, gate valves,butterfly valves and plug valves.
Supplying Ball Valve Seats Used For LNG to cities in