Ball check valves are safety devices that protect pressurized pipelines against unwanted backflow. They are most commonly used on discharge risers in domestic sewage and stormwater pumping stations.
rainwater. The design and material selection allow wide use in installations inside sewage pumping station tanks, on above-ground transmission pipelines, and also underground, both in the vertical position and
and horizontal (with the correct flow direction maintained).
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 with regard to BSP threads,
- Category A, ISO5208 standard,
- EN558-1 series 48 (DIN3202 F6).
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Threaded valve diameter range: from DN25 (1”) up to DN65 (2-1/2”).
- Flanged valve diameter range: DN50 to DN100.
- Maximum working pressure: 16 bar.
- Minimum back pressure guaranteeing tightness: 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 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 an arrow on the body.
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The durable and simple design ensures long-lasting, trouble-free operation.
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The valve closure (shutter) is a smooth ball coated with a layer of EPDM resistant to sewage. As the ball freely rotates in its seat, into which it is pushed by the liquid flow, the ball is cleaned of solid particles carried by the medium.
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The valves have a bolted inspection cover for inspection and convenient cleaning if non-standard sewage solids enter.
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Dimensions according to EN1092-2 PN6
|
|
DN
|
L
|
D
|
D1
|
D2
|
n-d
|
b
|
H
|
|
DN50 PN6
|
200
|
165
|
110
|
90
|
4 - 14
|
19
|
106
|
|
DN65 PN6
|
240
|
185
|
130
|
110
|
4 - 14
|
19
|
134
|
|
DN80 PN6
|
260
|
200
|
150
|
28
|
4 - 18
|
19
|
155
|
|
DN100 PN6
|
300
|
220
|
170
|
148
|
4 - 18
|
19
|
192
|
|
DN150 PN6
|
400
|
285
|
225
|
202
|
8-18
|
19
|
268
|
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.
