Slide Gates

Slide gates are a vital piece of equipment in water and wastewater treatment plants. Their primary function is to control the flow of water or wastewater in a treatment plant system. They work by sliding a flat, rectangular plate into or out of the path of the flow, either completely blocking it or allowing it to pass through. Slide gates play an essential role in controlling the flow of water or wastewater at various stages of the treatment process.

• Diversion of flows between treatment units
• Isolation of equipment for maintenance or during malfunctions
• Control of water levels in treatment and storage tanks
• Discharge of treated effluent

• Regular inspection for signs of wear or damage
• Periodic lubrication of the operating mechanism
• Annual maintenance to replace worn seals
• Safety considerations include ensuring that operators are not positioned under a gate during operation in case of sudden closure.

• Gate Frame: This is the structure that houses the slide gate plate. It is typically made of durable metals like stainless steel or cast iron.
• Slide Gate Plate: This is the flat, rectangular piece that moves to control the flow. It's usually made from stainless steel or aluminum.
• Operating Mechanism: This can be manual (handwheel or lever) or automated (electric or hydraulic actuator). The choice depends on gate size, frequency of operation, and required precision.
• Seals: Rubber seals are used to prevent leakage around the gate plate when it's closed.

• Flow rate (in gallons per minute or liters per second)
• Pressure (in pounds per square inch)
• Gate dimensions (width x height, in inches or cm)

• MasterFormat Division 44 - Pollution and Waste Control Equipment
• Section 44 42 00 - General Water and Wastewater Control Equipment

• Waterman Industries: Model SG-250 Series
• Golden Harvest: Model GH-10
• Rodney Hunt: Series 20

• Butterfly valves: These are more compact and may be preferred in space-limited situations, but they don't provide as precise flow control.
• Flap gates: These are simpler and less expensive but can only block flow in one direction. Useful for preventing backflow in discharge pipes.
• Pinch valves: These offer excellent sealing capabilities and are preferred for handling slurries or suspended solids, but they require more maintenance.