Swing check valve to ANSI/ASME with flanged or butt weld ends, with bolted cover, internally bracket-mounted hinge pin (up to NPS 12) or body-mounted hinge pin (NPS > 12). Bigger nominal sizes with anti-slam/dash pot arrangement (optional), graphite gaskets. Stellite hard-faced seat/disc interface made of 13 % chrome steel. Available in carbon steel, low-alloy steel and stainless steel.
Benefits
- Additional features ensure safe sealing to atmosphere:
- Risk of leakage is reduced by internally mounted hinge pin.
- Fully confined cover gasket with controlled compression ensures leak-proof joint.
- Reliable, tight shut-off
- Hard-faced body seat made of wear-resistant and corrosion-resistant 13 % chrome steel or Stellite.
- High-grade surface finish: lapped seat/disc interface.
- Self-aligning valve disc ensures tight shut-off.
- Valve disc opens at low differential pressure.
- Economic benefits
- Streamlined flow path minimises pressure losses.