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コントロールユニット DeZurik APCO 100SRのPDF インストレーション、オペレーション、メンテナンスマニュアルをオンラインで閲覧またはダウンロードできます。DeZurik APCO 100SR 14 ページ。 Rubber flapper swing check valves

Troubleshooting

Condition

Cover leaks.

Valve leaks excessively from

one side of the flapper to the

other.

Valve leaks at flange joint.

Valve does not fully close.

December 2012

APCO CRF Rubber Flapper Swing Check Valves

Possible Cause

Cover gasket is damaged.

Foreign matter caught between

flapper and seat.

Flapper is worn or damaged.

Loose flange bolting.

Blown flange gasket.

Miss-alignment or damage to

field piping and supports.

Damaged flange face/s or

improper flange connections.

Object is wedged between seat

and disc.

Page 13

DeZURIK

Corrective Action

Replace cover gasket.

Fully open valve to remove

object.

Replace flapper.

Tighten flange bolting.

Replace flange gasket.

Adjust miss-alignment or repair

piping or supports.

Repair flange, replace valve

body or adjust flange

connections.

Fully open valve to remove

object.

D12007