Description
Benefits
- Additional features ensure safe sealing to atmosphere:
- Pressure seal bonnet. Low risk of leakage, particularly at high pressures and temperatures.
- Graphite gland packing with packing end rings.
- Reliable, tight shut-off and service-friendly design
- Wedge holder with flexibly mounted split wedge. Precise alignment of wedge discs with body; wedge discs are easy to replace.
- Actuating moments are absorbed by the wedge holder guided in the body. No additional loads on the wedge discs and the seat/disc interface.
- Standard DIN/ISO top flange at the yoke head simplifies actuator mounting.
- Additional safety and blow-out protection by standard back seat.
- Long service life and high functional reliability
- Stop nut as standard. Limited wedge action prevents jamming in closed position and ensures reliable opening of the gate valve even in the event of temperature transients.
- Of the gland packing due to non-rotating stem with burnished shank.
- Threaded bush runs in ball bearings for smooth actuation.
- Hard-faced seat/disc interface made of wear-resistant and corrosion-proof 17 % chrome steel or Stellite.