Clark-Reliance Jerguson 360 Series Manual de Instruções de Instalação, Operação e Manutenção - Página 5

Procurar online ou descarregar pdf Manual de Instruções de Instalação, Operação e Manutenção para Unidade de controlo Clark-Reliance Jerguson 360 Series. Clark-Reliance Jerguson 360 Series 12 páginas. Safety ballcheck valves

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IOM J500.36

Jerguson

360 Series

2017.10

7. Method Of Operation

Run Mode:

When the arrow on the handle of the valve is pointed towards the gage (opposite the vessel connection)

the valve is in the Run Position.

The function of the Run Position is intended for when the gage is in normal operation. This mode positions

the seating surface of the internal ballcheck towards the armored glass gage allowing the ballcheck to seat

in the case of a catastrophic event. The pressure differential required to seat the ballcheck is ~5 psi.

Bypass Mode:

When the arrow on the handle of the valve is pointed in the direction of the process connection the valve is

in the Bypass Position.

The Bypass Position is intended for use while the gage is being commissioned when there is already liquid

present in the vessel. This mode of operation positions the internal ball mechanism such that there is a

retainer plate towards the armored glass gage connection. In this scenario the ballcheck cannot seat as

the ballcheck seating surface is upstream of the ball. Fluid will flow around the ball, through the retainer

plate, and into the gage while it is being commissioned.

Closed Mode:

When the arrow on the handle of the valve is pointed perpendicular to the valve (either pointing up or

down), the valve is in the closed position.

The closed position is intended for use when the operator intends to isolate the gage from the vessel. This

mode of operation positions internal ball mechanism such that it blocks the process port preventing fluid

from entering the gage or draining back to the vessel.

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