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Sluice gates & penstocks

Wall-mounted sluice gates (occasionally referred to as penstocks or slide gates) are used to close off an opening in a wall, often between adjacent tanks or chambers, as well as outlets in dam walls.

The most common type of seals used on sluice gates are Neoprene "music note" or "J" seals, and as it is not possible to utilise these seals on circular gates, all our sluice gates have square or rectangular openings.

Water pressure forces the bulb of the seal against the sealing surface on the frame of the penstock, and the higher the pressure, the greater the force. To cater for off-seating pressures, the seals are reversed, so that the bulb is still forced against the frame, and in cases where both seating and off-seating pressure conditions occur, double seals, one in the normal, and one in reverse configuration, are used.

The invert seal is either of the "J" type, for standard invert, or is rectangular, for flush invert. The latter is recommended for use in sewage and other applications where the fluid contains grit, sludge, etc., as no "pocket" occurs across the invert.

We can also fit non-resilient (metal or thermoplastic) seals to wall-mounted sluice gates, if specially required, and to ensure effective sealing, adjustable wedges would be used.

We strongly recommend using rising spindles wherever possible, since the threaded section, as well as the thrust arrangement, are at the top, out of the fluid. Unless their use is essential, non-rising spindles should be avoided, so obviating possible clogging of the threads.

Various operating gear options for sluice gates are described under "Operating Gear, and leading dimensions of the standard range of gate sizes can be found here (Sluice Gate).

Installed Sluice Gate

Installed Sluice Gate

Wall-mounted Sluice Gate
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Standard Dimensions and
Pressure Ratings