Gate valves are bi-directional valves ideally suited for
on-off duties. Diantai produces various types both with
parallel face gates or with wedge gates. These valves
have a very low resistance to flow, which in the case of
parallel gate valves approaches that of a straight pipe.
They are used for duties with high pressure fluids due
to the fact that upstream pressure helps the sealing
between gate and seat.
Diantai takes great care to study finish of seating surfaces
to guarantee their minimum wear under high pressures.
Gate valves are supplied in various models to cover the
most different and delicate services. The main characteristics
of each type are described on pages 16 to 23.