Bleach Chemicals, Chemical and Liquor, Paper Stock, Digester, Coatings
The NAF Duball has several features, including:
- Easy maintenance: Ball and seals can be serviced, without the need for removing the stem and actuator.
- A floating ball that seals in either direction of flow, and at low differential pressures.
- Sturdy, blowout-proof stem that transmits torque evenly.
- Stem seal with maintenance free O-ring seals and an optional stuffing box.
- Metal-to-metal Alloy 6 seat rings or carbon reinforced PTFE soft seats.
- A wide selection of alloys available for the ball.
- NAF standard close-mounted actuator, which simplifies installation and results in a compact valve/actuator unit.