Revised Web Page - 2017 July 14

Flow control Valves


The function of the RULA Flow Control Valve is to provide a controlled material discharge for silo and bin discharge spouts.

The material flow is controlled by a V or Bell shape cut out on the rotating drum.

The RULA Flow Control Valve is normally used in conjunction with the RULA Knife Gate Valve upstream for the isolation of the discharge system.

Types of actuation

The valve is pneumatically actuated, electric motor actuated or hand operated

Design Features

Fully adjustable to regulate the flow of material

Aeration chamber incorporated into the design to improve material flow

A relatively simple and very robust design with minimal movable parts

Externally mounted bearings and seals to avoid ingress of material

Valve parts exposed to the material flow are wear resistant / hard chromed and hard faced

An adjustable mechanical stop and Proximity switches (for Open / Close limits)

Fitted with a Positioner for accurate flow control

Fitted with a Potentiometer for electronic feedback to downstream applications

Material Specifications

Main Valve Body: SANS 50025 Grade S 275 JR

Drum: SANS 50025 Grade S 275 JR, Hard chromed and hard faced

Seal Clamping Plate: 6mm thick VRN 400 wear resistant material or similar


Valves are made to suit any size and shape to fit your plant requirements. The sizes range from 150 x 150 to 500 x 500

Drilling arrangements can be adapted to suit existing plant equipment

Operating & Maintenance

The valves are operator and maintenance friendly

A complete Operating & Maintenance manual is available

Spares are freely available and valves can also be fully refurbished

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