Gate valve to ANSI/ASME with butt weld ends, pressure seal design, split wedge, outside screw and yoke, rising stem and non-rising handwheel, Stellite hard-faced seat/disc interface and back seat, with graphite gasket and gland packing. Available in carbon steel and alloy steel.
Benefits
- Long service life and high functional reliability
- Two-piece self-aligning gland ensures even compression of packing rings.
- Inconel-reinforced braided packing end rings offer smooth wiping action and prevent extrusion of graphite.
- Stellite 6 hard-faced body seat ensures high wear resistance.
- Burnished stem and smooth stuffing box surfaces extend the service life of the gland packing.
- Low actuating torque due to rolling element bearing.
- Stop nut prevents jamming of the wedge assembly in the seat.
- Additional features ensure safe sealing to atmosphere:
- Additional safety and blow-out protection by standard back seat.
- Die-formed endless graphite packing rings reliably seal the stem passage.
- Reliable, tight shut-off
- Perfect contact at seat/wedge interface ensures tight shut-off.
- Self-aligning split wedge ensures tight shut-off.
- Streamlined flow path minimises pressure losses.
- Tie rods replacing traditional yoke ensure easy assembly and maintainance (only for Class 3100 and 3600)