- ページ 5

コントロールユニット Cameron WHEATLEY 822 Series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。Cameron WHEATLEY 822 Series 8 ページ。 Swing check valve

INSTALLATION & OPERATION

NOTE: If system hydrostatic tests are to be performed at pressures exceeding the rated working

pressure of the valve, the valve should be pressurized from the upstream side. This prevents exposure

of the clapper to these pressures while the body cavity can accept up to 150% rated working pressure.

Care must be taken not to damage the seal faces and that they are clean for assembly. After pressure

tests, with all test pressure relieved, the body cavity should be completely drained via the attached

piping system to prevent corrosion. The valve may then be placed in the required operating position.

HORIZONTAL INSTALLATION

When installing the swing check valve in the horizontal position, install the valve with the arrow mark

on the body pointing in the direction of flow and the cover side up.

OPERATION

Flow through the valve (in the direction of the arrow mark) forces the clapper to lift fully. The

clapper seals the valve when the flow is reversed. Gravity causes the clapper to swing closed

when no flow is present.

VERTICAL INSTALLATION

When installing the swing check valve in vertical piping, install the valve with the arrow mark on the

body pointed in the upward direction. Upward flow through the valve will cause the clapper to swing

open. This valve cannot be used with vertical downward flow.

OPERATION

If there is no flow through the piping, gravity will keep the clapper in the closed position. Flow

through the piping in the upward direction will cause the clapper to swing open. When the

flow is reversed, the flow and weight of the clapper will automatically close the valve.

Installation, Operation and Maintenance Manual

D I S T R I B U T E D V A L V E S

02/2011 / IOM-WHE-CHECK-822