Penstock are intended to manipulate the flow of water to the plants, waterways, channels, irrigation systems and the like.
You should always keep in mind that slide gates have some leakage.
According to DIN 19569 is allowed leakage
q= (0, 02 – 0, 05)*L [liters/sec], where L (m) is length of sealing.
This leakage can be minimized if the construction work (walls of the structure) carried out very accurately.
Depending on the physical properties of water such as aggressiveness and pressure, penstock are made of:
• Stainless steel (AISI 304 or similar)
• Carbon steel, corrosion protected
• Plastic material
• Aluminum.
Material of seal is EPDM, VITON, NBR, silicone, PTFE or PA.
EPDM material for seal is resistant to aged, ozone, oil, climate conditions, hot water, diluents, washing liquid.
Temperature range -40° to +80° C.