Ball check valves protect pressurized pipelines against unwanted backflow. They are most commonly used on discharge risers in domestic wastewater pumping stations and stormwater pumping stations.
stormwater. Their design and materials allow them to be widely used in installations inside pumping station tanks, on surface transmission pipelines, and also underground, in both vertical and horizontal positions
and horizontal (while maintaining the correct flow direction).
Features:
• Full-bore flow
• Self-cleaning ball
• Low sealing pressure
• Vertical and horizontal installation
• Quiet operation
• Inspection chamber for cleaning and replacing the ball
Technical data:
- Products meet the requirements of the following standards:
- EN1092-2 PN16 and AS4087, AS4087 (AS2129 Table E),
- ISO 228-1 for BSP threads,
- Category A, ISO5208 standard,
- EN558-1 series 48 (DIN3202 F6).
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Threaded valve size range: DN25 (1”) to DN65 (2-1/2”).
- Flanged valve size range: DN50 to DN100.
- Maximum operating pressure: 16 bar.
- Minimum back pressure ensuring a tight seal: 0.3 to 0.5 bar.
- Test pressure:
- for the ball seat: 1.1 × nominal pressure,
- – for the body: 1.5 × nominal pressure.
-
Operating temperature range: 10–80°C.
-
The face-to-face length of the valves and the connection sizes of the flanges and threads meet the requirements of the standards listed above.
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The correct direction of liquid flow through the valve is indicated by the arrow on the body.
-
A durable and simple design ensures long-lasting, trouble-free operation.
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The valve closure (flap) is a smooth ball coated with a layer of wastewater-resistant EPDM. As the ball rotates freely in its seat, into which it is pushed by the flow of liquid, solids carried by the medium are cleared from the ball.
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The valves have a bolted inspection cover for inspection and convenient cleaning if non-standard wastewater contents enter the valve.
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Dimensions according to EN1092-2 PN16
|
|
DN
|
L
|
D
|
D1
|
D2
|
n-d
|
b
|
H
|
|
DN50 PN16
|
200
|
165
|
125
|
99
|
4 - 19
|
19
|
100
|
|
DN65 PN16
|
240
|
185
|
145
|
118
|
4 - 19
|
19
|
125
|
|
DN80 PN16
|
260
|
200
|
160
|
132
|
8 - 19
|
19
|
136
|
|
DN100 PN16
|
300
|
220
|
180
|
152
|
8 - 19
|
19
|
185
|
Materials:
- Body: ductile iron,
- Ball: steel/NBR,
- O-ring: EPDM,
- Inspection cover: ductile iron,
- Bolt: AISI 304 stainless steel,
- Nut: AISI 304 stainless steel,
- Washer: AISI 304 stainless steel.
