Pneumatically Actuated Valve The pneumatic control valve is used for general purpose control and safety applications such as:
Remote start/stop of flow.
Principles of Operation for Pneumatically Actuated Valve The control system consists on: -
A flow, level, S.G or pressure transmitter with an analogue output of 4-20 mA.
An analogue switch receiving the signal from the transmitter, to close or open a set of N/C or N/O contacts.
A 4/3 directional solenoid valve, activated by the analogue switch to determine the N.G.D valve's control position.
Integrated Actuator The N.G.D pneumatic valve's actuator is a natural and integrated part of the valve. This type of actuator is ideal for plants or pump stations, where compressedair source can energise many valves.
Off-the-shelf standard variety of pneumatic valves, fittings and pneumatic components to enable any control or safety applications.
Cost effective and reliable actuating and control system
Low pressure actuating and control system.
Compressed air can be contaminated or subjected to condensation.
Low actuating forces due to limited compressed air pressure.
Level Control Valve The N.G.D reservoir level control valve controls the water level by opening or closing the valve on low or high level conditions in the reservoir. The valve can be actuated by the line-fluid pressure or alternatively by compressed air, hydraulically or electrically. The valve is used in: -
Industrial Water Systems
Municipal Water Supply Systems
Mine Water Reticulation
Principles of Operation for Level Control Valve The N.G.D reservoir level control valve's actuator is a natural and integrated part of the valve. This type of actuator is ideal for relatively clean line-fluid. The line-fluid pressure actuates the valve and no external power source is required.
The piloting is done by combination of solenoid valves and suspended type level switches, which are compatible with the line fluid and the system pressure.
Low Level Low level switch contact closes. High level switch is opened and Low level switch is closed. Solenoid valve SO is activated while solenoid valve SC is deactivated. Water vents from the closing compartment.
High Level Low level switch contact stays opened. High level switch closes. Solenoid valve SC is activated while solenoid valve SO is deactivated Water enters the closing compartment. Water enters the closing compartment.
For more information or a quote on Control Valves - Hydromine please call or email for a direct reply.
Dual Valves Australasia Pty Ltd is a specialist mining valve and pipe coupling supplier dedicated to providing rugged industrial quality slurry and mine water valve products that are safe and simple to operate whilst offering excellent performance and value for our customers.
We are the exclusive Original Equipment Manufacturer representative for DUAL Products Intl (SA) cc in Australia, New Zealand and Asia Pacific. DUAL’s patented slurry valves have been sold throughout Australia for over 10 years, with new clients being added every year from the entire Asia Pacific region adding to the current users’ list of over 25 countries worldwide.
We offer the eDART range of specialist slurry dart valves for slurry flow control applications, poppet slurry samplers designed to meet composite or shift sampler requirements and self flushing dosing valves for tailings neutralisation applications. eDart uses Computational Fluid Dynamics software to examine flow details and ensure the correct valve application in each case.
Through our relationship with HYDROMINE PROJECTS, who has sole agency, we also proudly offer the HYDROMINE range of mine water control valves and pipe couplings – a complete range designed for mine shaft and underground mine water reticulation as well as other high pressure water applications in all options ranging up to 25 MPa working pressure.
We sell our products throughout Australia, New Zealand and the rest of Asia Pacific from our base in Perth, Western Australia - working with end users on mines, refineries and power stations, as well as consultants, engineers, contractors and municipal utilities to solve slurry, dewatering, waste water and high pressure water handling and control problems.
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