5 Installation at Site
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Hya-Duo D FL Compact
5.4.2 Fitting an expansion joint (optional)
DANGER
Sparks and radiant heat
Fire hazard!
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Take suitable precautions to protect the expansion joint if any welding work is
carried out.
CAUTION
Leaking expansion joint
Flooding of installation room!
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Do not apply any paint to the expansion joint.
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Keep the expansion joint clean.
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Regularly check for cracks or blisters, exposed fabric or other defects.
ü
Sufficient clearance in all directions is provided for checking the expansion joint.
ü
The expansion joint is not insulated along with the pipeline insulation.
1. Sufficient clearance in all directions is provided for checking the expansion joint.
2. Only fit an expansion joint upstream of the float valve if a rigid, supported pipe
section is fitted between the float valve and the expansion joint.
3. Install the expansion joint in the piping free of twist or distortion. Never use the
expansion joint to compensate for misalignment or mismatch of the piping.
4. Evenly tighten the bolts crosswise. The ends of the bolts must not protrude from
the flange.
5.5 Installing operator-supplied valves
1. Any additional valves used (e.g. gate valve, water meter and lift check valve)
must comply with the local water supplier's requirements.