Batescrew High Head Valves
design features provide effective
sealing and give a smooth, free-running movement to
the valve door, while allowing rapid winding of the handwheel:
The exploded view below shows the arrangement of guide rollers and profile tracks in the side frame of a valve. (The illustration is actually of a Batescrew square profile sewerage valve, using the same principle.)
Tapered bronze rollers guide the door.
View of a similar mechanism.
|Cross sectional view of
resilient seal and stainless steel seat.
The seat is a stainless ring, welded to a spigot which forms an integral part of the valve body.
|Seals are well protected and anchored within a steel cavity in the valve door.|