In sewages it is common the use of penstock valves. This type of water contains solids and elements in suspension that used to damage the valves when they are not of good quality, causing serious deterioration and producing in this way a decreasing of their useful life.
The sealing is made only in the last moment of closing, avoiding an unnecessary friction. Its closing is caused by the own pressure that the water force gives it.
Stainless steel gate.
• During the whole acting process, the plate is moving over the rails in a way that the elastomers do not damage or brush. It is in the last moment in which the plate is released to cause the closing.
• The sealing is elastomeric over metal, therefore watertight.
• It duration is given by its stainless steel manufacturing.