Larox valves – Technology with a Tight Fit Operating principle Larox valves are 100% tight. Two pinch bars squeeze the sleeve to shut on the center line. In the fully open position, the valve becomes an integral part of the pipeline.

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100% open 50% open 100% tight

High wear resistance Trouble free operation Low cost spare parts Unobstructed flow Excellent slurry properties No jamming or clogging

Valve bodies

PVE/S Enclosed/

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PVS Sealed body

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PVE Enclosed body

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Larox valves are particularly for use with abrasive and corrosive slurries, powders or granular substances in shut-off or control applications

PV Open body

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• Low pressures • Valve sleeve is covered b• Low temperature body hou

environment and sunlight Restricts leakage of the flowing

ment

• Non-hazardous med• Light and simple construc

ensures easy service media to the environ• Can be equipped with a cauge

pressure cha• Tolerates misalignment and

vibration indicating thein valve body

sealed body • High pressure applicat• Fugitive emissio • Toxic or aggressive medium• Stem and body seals include • Can be equipped with an alar

g to inform sudden • Body construction provides condary containment of the

or pipinsleeve ruptures PVS structure encases all

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sefluid in the valve and prevents all leakage from the valve body moving pa

Sleeve selection

Electromechanical Actuators Electromechanical actuator used for on/off or control service. Manual override ensures valve function in malfunctions.

Larox applications are everywhere: pulp and paper: recausticizing, coating kitchen, recycled paper handling; mining, cement, pneumatic conveying, pigments & fillers, chemical, offshore, iron & steel manufacturing.

NR

Natural Rubber

SBRT

Styrene Butadiene

IIR Butyl

NBR Nitrile

NBRF Nitrile Foodstuff Quality

HNBR Hydrogenated Nitrile

FPM Fluorine Rubber

CSM Hypalon

EPDM Ethylene Propylene

CR

Chloroprene Rubber

PU

Polyurethane

Larox valve sleeves can be supplied with positive opening tags. They ensure undisturbed opening of the valve in high temperatures, low pressures and in applications where the valve remains closed for prolonged periods. Special sleeve designs are available for control service, throttling and vacuum applications. A new twin sleeve construction has been developed for abrasive and aggressive applications where special materials are required.

Actuators for every purpose

Manual Actuators The screw mechanism of the manually operated valves is totally enclosed and protected against dirt and corrosion.

Hydraulic Actuators High pressure applications often operated with hydraulic actuators.

Pneumatic Actuators The flow control properties combined with abrasive resistant feature makes the Larox valve excellent for slurry control.

Larox Flowsys Oy P.O. Box 338 Tel. +358 201 113 311 53101 Lappeenranta Fax +358 201 113 300 Finland www.larox.fi

Standard production range of Larox valves:

Diameters 25mm – 1000mmTemperatures -50ºC – +120°C Pressures 0 – 100 bar