Ball check valves protect pressurized pipelines against unwanted reverse flow. 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 underground in both vertical andand 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 diameter range: from DN25 (1”) to DN65 (2-1/2”).
- Flanged valve diameter range: DN50 to DN100.
- Maximum operating pressure: 16 bar.
- Minimum back pressure to ensure tightness: 0.3 to 0.5 bar.
- Test pressure:
- for the ball seat: 1.1 × nominal pressure,
- – for the body: 1.5 × nominal pressure.
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Operating temperature range: 10–80°C.
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The face-to-face length of the valves and the connection dimensions 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.
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The durable, simple design guarantees long-lasting, trouble-free operation.
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The valve closure (flap) consists of a smooth ball coated with a layer of wastewater-resistant EPDM. As the ball rotates freely in its seat, where it is moved by the flow of liquid, solids carried by the medium are removed from the ball.
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The valves have a bolted inspection cover for inspection and convenient cleaning if non-standard wastewater gets inside.
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Dimensions according to EN1092-2 PN16
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|
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
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180
|
152
|
8 - 19
|
19
|
185
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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.
