Burkert Type BBS-10 - Manuel (Page 3)

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5.6. Concentric/eccentric design
To ensure that the concentric design drains completely, this valve
should be installed in a vertical position.
The eccentric design, even when installed horizontally, guarantees
complete drainage of the product.
6. ASSEMBLY
WARNING!
Danger – high pressure and discharge of medium!
• When working on the product or the system, always switch off the
pressure and relieve the lines.
• Wear protective equipment if media is hazardous.
Risk of injury from improper assembly!
• Installation must only be carried out by authorized technicians and
with the appropriate tools!
• Secure system from unintentional activation.
6.1. Welding in the pipe connection
NOTE!
Leak due to damaged sealing elements!
• Do not weld in the assembled product. It is essential to remove
the O-ring and locking ball before welding and to protect the prod-
uct from dust, flying sparks and other influences!
Leak due to damaged sealing contour!
• To ensure the sealing function, protect the sealing contour during
installation, welding and cleaning procedures.
Welding work may be carried out only by experts who have
specialist knowledge in welding technology.
Before welding:
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Connect the parts positively in a protective gas shield.
After welding:
When cleaning the weld seam by grinding or acid cleaning, observe
the following before assembling the connection:
• Carefully remove all grinding dust and acid-cleaning residue.
• Do not damage the label.
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• There must be no material abrasion on the sealing edges. Material
abrasion will result in sharp-edged sealing contours and a damaged
seal.
• Check sealing contour for damage.
We recommend preparing a welding report.
6.2. Direction of flow
The flow direction is optional. Install the support flange with spring and
locking element in the valve housing so that the ball head is against the
direction of flow.
Following installation, we recommend marking the direction of
flow clearly on the outside of the valve.
6.3. Installing concentric valve with union nut
1 4 7 6 5 2 3
Direction of flow
Fig. 2: Installing concentric ball check valve with union nut
Valves ≤ DN 25/DN 1" are connected with a union nut.
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Insert O-ring (4) by hand (do not use any tools or sharp imple-
ments) into the threaded connection piece (1).
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First push the spring (6), then the support flange (7) over the
locking element (5).
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Now push this assembly into the threaded connection piece,
attach the liner (2). Ensure that the O-ring is in the correct position.
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For mounting the housing please apply some fitting lubricant (see "10.
Recommended auxiliary materials") onto the thread of the threaded
connection piece and close the housing with the union nut (3).
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6.4. Installing concentric valve with flange
8 4 7 6 5 9
Direction of flow
10 11 12
Fig. 3: Installing concentric ball check valve with flange
Valves ≥ DN 25/DN 1" are connected with a flange.
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Insert O-ring (4) by hand (do not use any tools or sharp imple-
ments) into the grooved flange (8).
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First push the spring (6), then the support flange (7) over the
locking element (5).
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Now push this assembly into the grooved flange and attach the
collar flange (9). Ensure that the O-ring is in the correct position.
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Close housing using bolts (10), washers (11) and nuts (12).
Initially tighten nuts hand-tight and then tighten increasingly in a
criss-cross sequence.
6.5. Installing eccentric valve
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Direction of flow
10 13 14 15 16 17 11 12
Fig. 4: Installing eccentric ball check valve
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Insert O-ring (4) by hand (do not use any tools or sharp implements)
into the grooved flange (13).
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First push the spring (15), then the support flange (14) over the
locking element (16).
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Now push this assembly into the grooved flange and attach the
collar flange (17). Ensure that the O-ring is in the correct position.
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Close housing using bolts (10), washers (11) and nuts (12).
Initially tighten nuts hand-tight and then tighten increasingly in a
criss-cross sequence.
To ensure complete drainage, weld in the valve horizontally
with the connections at the lowest point (same as "Fig. 4").
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Type BBS-10