Seats for ball valves: “trunnion type”
These kinds of ball valve seats are used in cases of extreme temperature and pressure.
They are made from a metallic seat and a polymer internal part with the function of sealing the sphere.
The material for the internal part is chosen according to the application of the ball valve itself (average temperature, temperature range, maximum pressure, number of daily open/close cycles, etc…).
The principal materials used for producing the internal polymer part are:
- FLON-CHEM 1002 PTFE + 25% carbographite;
- FLON-CHEM 1001 PTFE + 25% glass;
- FLON-CHEM 1075 Modified Premium grade PTFE;
- DYNEON TFM™1600;
- FLON-CHEM 1015 Modified PTFE + 25% glass;
- FLON-CHEM 2057 Modified PTFE + 25% carbosoft;
- PA6 + Mos2 (black);
- LAURAMID®;
- DEVLON® V-API;
- PEEK virgin;
- PEEK PVX (black);
- PEEK + PTFE;
- PCTFE (KEL-F®);
Other materials can be used subject to the customer’s request.
FF.GI Srl can furnish the internal part only (up to 36” diameter), or the polymer internal part + the fitting of the internal part into the metallic one + final rework (up to 12” diameter).
They are made from a metallic seat and a polymer internal part with the function of sealing the sphere.
The material for the internal part is chosen according to the application of the ball valve itself (average temperature, temperature range, maximum pressure, number of daily open/close cycles, etc…).
The principal materials used for producing the internal polymer part are:
- FLON-CHEM 1002 PTFE + 25% carbographite;
- FLON-CHEM 1001 PTFE + 25% glass;
- FLON-CHEM 1075 Modified Premium grade PTFE;
- DYNEON TFM™1600;
- FLON-CHEM 1015 Modified PTFE + 25% glass;
- FLON-CHEM 2057 Modified PTFE + 25% carbosoft;
- PA6 + Mos2 (black);
- LAURAMID®;
- DEVLON® V-API;
- PEEK virgin;
- PEEK PVX (black);
- PEEK + PTFE;
- PCTFE (KEL-F®);
Other materials can be used subject to the customer’s request.
FF.GI Srl can furnish the internal part only (up to 36” diameter), or the polymer internal part + the fitting of the internal part into the metallic one + final rework (up to 12” diameter).
