DeZurik APCO CRF-100 Manual de instalação, operação e manutenção - Página 5
Procurar online ou descarregar pdf Manual de instalação, operação e manutenção para Unidade de controlo DeZurik APCO CRF-100. DeZurik APCO CRF-100 14 páginas. Rubber flapper swing check valves
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Maintenance
The CRF Rubber Flapper Swing Check Valve does not require routine maintenance, but should be
included as part of the normal facility equipment inspections for any malfunction while under normal
usage conditions. An inspection can be quickly performed as follows:
Servicing the valve while the pipeline is under pressure can cause personal injury or
equipment damage. Relieve pipeline pressure before servicing the valve.
1. Relieve the pressure in the pipeline.
2. Isolate the Rubber Flapper Check Valve from system before loosening the Cover Bolts (4) to
remove the Cover (2).
3. Loosen each cover bolt only three full turns, then tap the side of the cover with a mallet to
separate only the valve cover from the Cover Gasket (3), this will relieve any pressure in the
valve.
4. Continue loosening to remove all cover bolts and lift off the cover. After removing the cover, the
Flapper (10) will be fully exposed and freely removed. At this point, the flapper and body
surfaces should be examined for wear.
5. To reassemble, replace Cover Gasket (3), often the same cover gasket can be reused several
times.
6. Replace flapper and be sure it rests flat and centered against the body seat surfaces.
December 2012
APCO CRF Rubber Flapper Swing Check Valves
Figure 1- Flapper Swing Check Valve Disassembly
Page 5
DeZURIK
D12007