Ball check valves protect pressure pipelines against unwanted reverse flow. They are most commonly used on discharge risers in pumping stations for domestic wastewater and in stormwater pumping stations.stormwater. The design and materials allow for a wide range of applications in installations inside pumping station tanks, on surface transmission pipelines, and underground, in both vertical andand horizontal (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:
- The 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 tightness: 0.3 to 0.5 bar.
- Test pressure:
- for the ball seat: 1.1 × normal pressure,
- – for the body: 1.5 × normal 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 ensures long-lasting trouble-free operation.
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The valve closure (flap) is a smooth ball coated with a layer of EPDM resistant to wastewater. As the ball moves freely in its seat, where it is pushed by the liquid flow, solids 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 wastewater contains non-standard matter.
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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.
