The ebro WB / WB 11 is a wafer knife gate valve designed specifically for the water industry. The series covers nominal sizes from DN 50 to DN 1600, achieves leakage rate A to EN 12266 and ISO 5208, offers a maximum working pressure of up to 10 bar, and a maximum operating temperature of 120 °C. Actuation options include handwheel, chainwheel, pneumatic and electric actuators, and hydraulic cylinders, meeting the isolation and control requirements of various water treatment and water transmission systems.
WB / WB 11 wafer knife gate valve product image
EBRO
WB / WB 11 Wafer Knife Gate Valve | EBRO
Product code: WB
Wafer knife gate valve dedicated to the water industry for isolation in water treatment and water transmission lines, with sizes from DN 50 to DN 1600.
Select model
- Category
- Knife Gate Valves
- Nominal size
- DN 50 - DN 300; DN 350 - DN 1600
- Maximum operating temperature
- Up to 120 °C
Specifications
- Nominal size
- DN 50 - DN 300; DN 350 - DN 1600
- Face-to-face standard
- EN 558-1 series 20; ISO 5752 series 20; factory standard
- Flange connection standard
- DN 50 - DN 300: EN 1092 PN 10, ASME/ANSI B 16.5 Class 150; DN 350 - DN 1600: EN 1092 PN 10; ≥ DN 700: ANSI B16.47 Class 150, series A, AS 2129 Table D and E
- Valve marking standard
- EN 19
- Leakage rate
- EN 12266 Leakage Rate A; ISO 5208 Class A
- Maximum operating temperature
- Up to 120 °C
- Actuation options
- Handwheel, chainwheel, pneumatic actuator, electric actuator, hydraulic cylinder
- Maximum working pressure
- DN 50 - DN 300: 10 bar; DN 350 - DN 400: 6 bar; DN 500 - DN 600: 4 bar; DN 700 - DN 1200: 6 bar; DN 1400 - DN 1600: 4 bar
Application scenarios
Raw water intake and potable water transmission lines at waterworks
For opening/closing and isolation of raw water intake and potable water transmission lines at waterworks. Nominal sizes from DN 50 to DN 1600, supporting multiple flange connection standards including EN 1092 PN 10 and ASME/ANSI B 16.5 Class 150. DN 50 to DN 300 sizes offer a maximum working pressure of 10 bar and can be fitted with handwheel, electric actuator and other actuation options.
Process line isolation in potable water treatment
For isolation of process sections such as water intake, filtration and treated water outlet at potable water treatment plants. The wafer knife gate valve face-to-face dimensions comply with EN 558-1 series 20 and ISO 5752 series 20, with leakage rates of EN 12266 Leakage Rate A and ISO 5208 Class A, supporting various size and flange interface configurations.
Transmission and isolation lines in wastewater treatment plants
For shut-off and isolation of pipelines in wastewater treatment plants. The product covers nominal sizes from DN 50 to DN 1600 and can be equipped with pneumatic or electric actuators for remote operation, with a leakage rate of EN 12266 Leakage Rate A.
Pumping stations and large-diameter water transmission systems
For maintenance isolation of pump station inlet/outlet lines and large water transmission pipelines. Supports EN 1092 PN 10 and ASME/ANSI B 16.5 Class 150; large sizes (≥ DN 700) can optionally use ANSI B16.47 Class 150 series A and AS 2129 Table D and E flange standards, matching the flange system on site.
Selection points
Size range from DN 50 to DN 1600 with distinct WB11 and WB models
WB 11 covers DN 50 to DN 300 and WB covers DN 350 to DN 1600; the product documentation clearly defines the nominal size ranges of the two models, allowing size selection to scale from standard pipe diameters to large water transmission lines within the same series.
Compatibility with multiple flange standards
The product documentation states that DN 50 to DN 300 supports EN 1092 PN 10 and ASME/ANSI B 16.5 Class 150, DN 350 to DN 1600 supports EN 1092 PN 10, and DN 700 and above additionally supports ANSI B16.47 Class 150 series A and AS 2129 Table D and E, matching pipe flange interfaces of different sizes and standards.
Multiple actuation options
The product documentation lists handwheel, chainwheel, pneumatic actuator, electric actuator and hydraulic cylinder options, allowing different drive configurations within the same valve series according to on-site operating conditions and automation requirements.
Maximum working pressure segmented by size
The product documentation specifies the maximum working pressure by size range: DN 50 to DN 300 at 10 bar, DN 350 to DN 400 at 6 bar, DN 500 to DN 600 at 4 bar, DN 700 to DN 1200 at 6 bar, and DN 1400 to DN 1600 at 4 bar. The corresponding pressure rating must be verified against the actual size during selection.
FAQ
How do the nominal size ranges of the ebro WB and WB 11 wafer knife gate valves differ?
WB 11 is suitable for DN 50 to DN 300, while WB is suitable for DN 350 to DN 1600. Select the appropriate series first based on the nominal pipe size.
How to determine the maximum working pressure of the ebro WB / WB 11 based on nominal size?
The maximum working pressure varies with nominal size: DN 50–DN 300 at 10 bar; DN 350–DN 400 at 6 bar; DN 500–DN 600 at 4 bar; DN 700–DN 1200 at 6 bar; DN 1400–DN 1600 at 4 bar.
Which actuation options are available for the ebro WB / WB 11?
The series can be equipped with a handwheel, chainwheel, pneumatic actuator, electric actuator or hydraulic cylinder. Select the appropriate actuation method according to on-site operation and control system requirements.
Which flange connection standards does the ebro WB / WB 11 support?
DN 50–DN 300 can use EN 1092 PN 10 or ASME/ANSI B16.5 Class 150; DN 350–DN 1600 can use EN 1092 PN 10; DN 700 and above can additionally use ANSI B16.47 Class 150 Series A as well as AS 2129 Table D and Table E.
What are the leakage rates and operating temperature of the ebro WB / WB 11?
The valve achieves EN 12266 Leakage Rate A and ISO 5208 Class A, with a maximum operating temperature of 120 °C.