Ball check valves protect pressurized pipelines against unwanted backflow. They are most commonly used on discharge risers in pumping stations for domestic wastewater and in 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: DN25 (1”) to DN65 (2-1/2”).
- Flanged valve diameter range: DN50 to DN100.
- Maximum operating pressure: 16 bar.
- Minimum back pressure guaranteed to ensure a seal: 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 valves' face-to-face lengths 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.
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A durable and simple design guarantees 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, where it is pushed by the flow of liquid, solid particles carried by the medium are cleaned off the ball.
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The valves have a bolted inspection cover for inspection and convenient cleaning if non-compliant wastewater contents enter the valve.
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Dimensions
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DN - inches
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L
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H
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DN25 – 1”
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120
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65
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DN32 – 1¼”
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135
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75
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DN40 – 1½”
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145
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88
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DN50 – 2”
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174
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106
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DN65 – 2½”
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200
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125
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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.
