Close attention to detail makes it easier to go with the flow

WHEN selecting a valve for fluid control, in addition to considering the liquid or gas process, it is vital to consider a number of other elements: pressures; temperature; density and viscosity; and upstream and downstream system conditions.
Most manufacturers have sizing programs available to assist engineers with valve selection, but it is still necessary to have a basic understanding of the fundamentals involved.
Although a computer can be used to make a selection, users are not absolved from thinking about which valve has been automatically recommended.
Pressure and Safety Systems is the Australian importer, stockist and distributor, and service and repair agent for several world-renowned manufacturers of safety relief and control valves.
The company has the resources of these international valve manufacturers to call upon to assist in the selection of valves for the oil and gas industry.
It specialises in offshore applications, and onshore methane gas recovery and compression, steam generation and compressed air including general fluid and gas process applications.
The company’s range of valves includes safety and relief valves, control valves, mixing valves, bellow seal globe valves, strainers, pressure reducing and sustaining valves, non-return valves, steam traps and rupture discs and explosion panels.
Most of these items are manufactured in a variety of materials, including cast iron, nodular iron, cast steel and stainless steel, as well as exotic materials such as Monel and Hastelloy.
For the protection of vent pipes or stacks, the company’s ‘Weather Cap’ prevents dirt and water entering the discharge of a safety valve and causing blow-off problems by forming a mud slug on the exhaust side of the valve.
The Weather Cap – which blows off, but is restrained by a tie which makes it reusable – indicates when a safety valve is leaking or has discharged.
Pressure and Safety Systems is based in Melbourne and is represented nationally.

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