Ball check valves are devices that protect pressure pipelines against unwanted backflow. They are most often used on pressure risers in domestic sewage pumping stations and in water pumping stations.rainfall. The design and material design allow for wide use in installations inside pumping station tanks, on surface transmission pipelines, as well as for use underground, both in a vertical and vertical position.and horizontal (maintaining the correct flow direction).
Features:
• Full cross section flow
• Self-cleaning ball
• Low sealing pressure
• Vertical and horizontal mounting method
• 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 standard ISO5208,
- EN558-1 series 48 (DIN3202 F6).
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Threaded valve diameter range: from DN25 (1”) up to DN65 (2-1/2”).
- Flange valve diameter range: from DN50 to DN100.
- Maximum working pressure: 16 bar.
- Minimum back pressure guaranteeing tightness: from 0.3 to 0.5 bar.
- Tested pressure:
- for ball seat: 1.1 × normal pressure,
- – for body: 1.5 × normal pressure.
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Range of use at temperatures 10–80°C.
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Valve installation length and connection sizes flanges and threads meet the requirements of the above-mentioned standards.
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It determines the correct direction of liquid flow through the valve arrow on the body.
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Durable and simple design, guarantee long-lasting use trouble-free operation.
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The valve closure (shutter) is a smooth covered ball layer of sewage-resistant EPDM. Through the free rotation of the ball in the socket into which the ball is placed under the influence of the liquid flow, the ball is cleaned of solid fractions carried by the medium.
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The valves have a screw-closed revision for inspection and convenient cleaning in the event of abnormal sewage content.
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Dimensions according to EN1092-2 PN16
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|
DN
|
L
|
D
|
D1
|
D2
|
n/a
|
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 cast iron,
- Ball: steel/NBR,
- O-ring: EPDM,
- Inspection cover: ductile cast iron,
- Screw: AISI 304 stainless steel,
- Nut: AISI 304 stainless steel,
- Washer: AISI 304 stainless steel.
