CVS Controls 128PQC Series Manual de instruções - Página 3

Procurar online ou descarregar pdf Manual de instruções para Unidade de controlo CVS Controls 128PQC Series. CVS Controls 128PQC Series 12 páginas.

Installation

Warning:

Service conditions must not exceed the limits

shown on the valve nameplate, or those

outlined in this manual. Consequences could

include bursting of pressure-retaining parts

and uncontrolled process fluid, resulting in

personal injury or property damage. Control

valves should also be protected from external

damages.

Prior to installing the CVS Series 128PQC

Control Valve, perform a complete inspection for

damage, and remove any foreign debris.

Position the valve for desired flow direction. If

angle flow is required, switch the pipe plug to

left-hand connection. (Figure 2)

CVS Type 128PQC Control Valve with Fail-Close Action

Figure 2: CVS Type 128PQC Control Valve Typical Constructions

The versatility of this valve allows for installation

in any orientation, with the standard method

being with the actuator above the body.

Standard orientation is best when an angle body

or angle configuration has been specified.

When installing the valve into the line, accepted

piping practices must be used. A three-valve

bypass should be used if continuous operation

is required during inspection or maintenance.

For a fail-close control valve, connect the input

signal line into the 1/4-inch NPT actuator

connection (Figure 2) in the lower diaphragm

case assembly. The input signal pressure line

should be installed in the upper diaphragm case

assembly of a fail-open control valve.

Detail of CVS Type

128PQC Exterior