Cla-val 100-42 700 Series Manuel d'utilisateur télécharger pdf

INSTALLATION / OPERATION / MAINTENANCE

Model 100-42 Valve

in Closed Position

Upstream pressure is introduced to the

control chamber (the chamber formed

behind the liner) through the control

piping and restrictor. When the pilot is

closed, full inlet pressure is supplied to

the control chamber, thus balancing the

force developed by inlet pressure act-

ing on the upstream face on the liner.

Under these conditions, the liner

remains in the fully closed position.

Since the operating pressure in the

control chamber is greater than the out-

let pressure, an additional closing force

is developed across the liner, pressing

the liner against the surrounding slotted

grillwork area and seating surface.

Model 100-42 Valve

in Partially Open Position

As loading pressure is lowered slightly

below inlet pressure, the central portion

of the liner is forced to invert and come

to rest against the tip of the control

chamber cavity. Reducing the loading

pressure further (but still higher than

outlet pressure) causes the liner to

drape over the cone shaped portion of

the control chamber cavity. This action

causes the outer section of the liner to

roll off the seating surface and a portion

of the grillwork to partially open the

valve.

Model 100-42 Valve

in Fully Open Position

The valve is fully opened when loading

pressure is sufficiently reduced to allow

the liner to roll back completely and

expose the full slot area. Restoring

loading pressure reverses the liner

rolling action to return the liner to the

fully closed position.

DESCRIPTION

PRINCIPLE OF OPERATION

PILOT

CONTROL

VALV E

RESTRICTOR

SEATING AREA

CONTROL CHAMBER

INLET

Pilot

Control

Valve

RESTRICTOR

SEATING AREA

CONTROL CHAMBER

INLET

Pilot

Control

Valve

RESTRICTOR

SEATING AREA

CONTROL CHAMBER

INLET

100-42

The Cla-Val Model 100-42 Roll Seal valve

is a hydraulically operated valve used to

control liquid flow by means of a flexible

control element, the liner.

The basic valve consists of only two parts:

a one piece, investment cast body and an

elastomeric liner. The valve body is con-

structed with internal ribs and slots forming

a grillwork which surrounds the liner to pro-

vide support. A normally closed type valve

is formed by the installed liner which covers

the grillwork and seats against the raised

seating surface in the valve body.

Upstream pressure actuates the valve to

produce valve opening by rolling the liner off

the seating surface and the slotted grillwork.

The valve is actuated by upstream pressure

as the loading pressure (pressure supplied

to the control chamber) is varied by an

external pilot control system.

A typical pilot control system used to oper-

ate the Model 100-42 valve consists of a

restriction and a suitable pilot connected to

the valve.

700 Series Roll Seal

SERIES

1 2 3 4 5 6 7 8

Résumé du contenu

Page 1 - 700 Series Roll Seal

INSTALLATION / OPERATION / MAINTENANCEModel 100-42 Valvein Closed PositionUpstream pressure is introduced to thecontrol chamber (the chamber formedbeh

Page 2 - INSTALLATION

The Model 100-42 valve in 6" through12" sizes are constructed with separa-ble "slip-on" style flanges. Furnishedstandard in eithe

Page 3

Liner Retainer Removal 2"-12" Sizes The 2" and 3" liner retainer is secured to the valve with an Allenscrew. Loosen the Allen sc

Page 4 - Liner Installation

Liner Installation6", 8", 10", 12" sizes1. Tools required: Bottle of drugstore glycerine, 30" crowbar, double headed plastic

Page 5

Relief Valve Applications 750Series ValvesThe following instructions are for valvesequipped with a Model CRL PressureRelief Pilot Control. Due to the

Page 6 - Length Spool

2 1/2 Pipe DiametersMin RecomendedLength Spool21OUTLETRecommended Pipe layout6" - 12" Flange style 100-422 Pipe Coupling (Rubber Gasket Typ

Page 7 - Roll Seal

2 1/2 PIPE DIAMETERSMIN RECOMENDEDLENGTH SPOOLINLETINLETOUTLETOUTLET3412 Roll Seal®™ Roll Seal®™1 COUPLER FOR GROOVED PIPE2 SPOOL STRAINER ASSEMBL

Page 8 - N-100-42 (R-3/2014)

ItemNo.No.Req'dMaterial(Standard)Description12*345678BodyLinerNameplateDrive ScrewLiner RetainerRetaining RingSlip-on FlangeFlange Retainer Ring1

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Cla-val 100-42 700 Series Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Équipement Cla-val 100-42 700 Series. Cla-Val 100-42 700 Series User Manual Manuel d'utilisatio

Résumé du contenu

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