русскийCollection Network
Pipeline isolation for inspection, maintenance and network sectioning.
Recommended valve types
Confirm selection against debris and solids content.
Wastewater Valves for Collection and Treatment Systems
Valve solutions for dependable isolation, backflow prevention and flow control in sewage, sludge and treated-effluent lines—from collection and pumping to biological treatment and final discharge.
✓ Butterfly, gate and check valve options for key wastewater duties
✓ Selection based on solids content, corrosion conditions, pressure and actuation
✓ Product options conforming to applicable EN, BS and AWWA standards
WASTEWATER PROCESS
Where Valves Are Used in a Wastewater System
Valve requirements change as wastewater moves from collection and pumping through treatment and final discharge. Selection should consider the medium, solids content, pressure, line size and operating duty at each stage.
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Pump Stations
Pump suction and discharge isolation with reverse-flow protection.
Recommended valve types -
Preliminary & Primary Treatment
Isolation of screened influent, outlet and settling-tank pipelines.
Recommended valve types*After reviewing solids content and service conditions.
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Biological Treatment
Control of process water, return-flow and aeration-air lines.
Recommended valve types -
Tertiary Treatment
Flow isolation across filtration, disinfection and treated-water lines.
Recommended valve types -
Effluent & Reuse
Final-discharge and reuse-line isolation with reverse-flow protection.
Recommended valve types
Recommended Valve Types for Wastewater Systems
Valve type should be selected around the process stage, medium, solids content, line size, pressure and operating requirements.
Butterfly Valves
Compact valve options for large-diameter lines, limited installation space, and suitable isolation or throttling duties. Media conditions must be reviewed before selection.
Connections: Wafer · Lug · Double flanged
Actuation: Manual · Pneumatic · Electric
Typical service: Screened wastewater · Process water · Aeration air · Effluent
Resilient Seated Gate Valves
Full-open or full-closed isolation for collection, pumping and treatment pipelines. Suitability should be reviewed where solids, fibres or sediment may accumulate.
Applicable standards: BS 5163 · EN 1074 · AWWA C509/C515
Options: NRS · OS&Y
Typical duty: Pipeline and equipment isolation
Check Valves
Used on pump discharge lines and other locations requiring reverse-flow prevention. The specific design should reflect solids passage, surge risk, orientation and flow velocity.
Types: Swing · Ball · Dual plate · Silent
Duty: Pump discharge · Backflow prevention
Selection: Closing behavior · Orientation · Flow conditions
Ball Valves
Compact on/off isolation for smaller drain, sampling, auxiliary and chemical-dosing lines. Body, seat and seal materials must be checked against the actual medium.
Duty: On/off isolation
Typical lines: Drain · Sampling · Auxiliary · Dosing
Selection: Medium compatibility · Pressure · Temperature
How to Select Valves for Wastewater Service
Wastewater valves should be selected according to the actual service conditions. Review the medium, solids content, valve function, pipeline data, materials and operating method before specifying a valve.
Medium and Solids Content
Identify whether the service involves raw sewage, screened wastewater, process water, sludge, chemical wastewater or treated effluent.
Fibres, grit and suspended solids can affect the valve flow path, seat and closing performance.
High-solids and unscreened services require additional review.
Required Valve Function
Match the valve type to the required operating duty.
- Isolation: Gate or butterfly valve
- Backflow prevention: Check valve
- Flow regulation: Suitable control valve and actuator
- Auxiliary lines: Ball valve for suitable drain, sampling or dosing duties
Pipeline Data
Confirm the main pipeline and design parameters.
- Nominal diameter
- Operating and design pressure
- Operating temperature
- Flange or connection standard
- Available installation space
Butterfly valves may offer a compact option for large-diameter
pipelines, subject to the actual service conditions.
Body, Seat and Wetted Materials
Review the body, disc or wedge, shaft, seat and sealing materials against the wastewater composition and temperature.
- Cast iron or ductile iron
- Carbon steel or stainless steel
- EPDM, NBR, FKM or PTFE seats
Material availability depends on the valve type, size and
pressure rating.
Manual or Automated Operation
Select the operating method according to operating frequency, required closing time and the plant control system.
- Hand lever
- Gear operator
- Pneumatic actuator
- Electric actuator
Installation Conditions
Confirm the installation orientation, flow direction, maintenance space and surrounding environment.
- Horizontal or vertical installation
- Flow direction and available space
- Indoor, outdoor or submerged environment
- Access for operation and maintenance
For check valves, also review flow velocity, closing behaviour
and possible surge conditions.
Have a Valve List or Project Specification?
Send us the medium, solids content, valve size, pressure, temperature, connection standard and actuation requirements. We will review the application before recommending a suitable valve configuration.
Wastewater Valve FAQs
Which valve is suitable for a wastewater pump discharge?
A check valve is commonly used to prevent reverse flow, with a gate or butterfly valve for isolation. Selection should consider flow velocity, solids and surge risk.
Can butterfly valves handle wastewater containing solids?
Butterfly valves can handle suitable screened wastewater and process water. Unscreened sewage or high-solids service requires additional review of the valve design and operating conditions.
What valve materials are used for corrosive wastewater?
Options may include coated ductile iron, carbon steel or stainless steel with EPDM, NBR, FKM or PTFE seats. Final selection depends on the wastewater chemistry, concentration and temperature.
How do I select a valve for sludge service?
Review the solids concentration, particle size, fibres, abrasiveness and chemical composition. The flow path and seat design must be checked for blockage, wear and sediment buildup.