Tank blanketing one-device solution
February 2001
Valves, Actuators & Pump Control
Tank blanketing is the injection of a gas into the vapour space of a liquid storage tank. This is done to maintain a blanket of gas above the stored liquid to prevent atmospheric air entering the tank which could cause internal tank corrosion or degradation of the stored product. It also can be used to prevent the collapse of the tank from a vacuum being created during pump-out. The blanketing valve can only replace lost pressure; it cannot relieve excess pressure which must then be vented through a pilot-operated vent valve. A complete package is available from Mitech with the gas-blanketing valve for maintaining pressure and relief valve for venting.
Cashco's Vacu-Gard is not a modified regulator. It is a single valve system, specifically designed for tank blanket applications. The advantage is that the pressure can be maintained more accurately than with a standard regulator which results in cost saving in gas supply and tank construction. Due to its angle pattern and compact design it can be directly installed onto the tank nozzle reducing the number of necessary connections and possible leak points. The overall weight of Vacu-Gard is less than most conventional valve systems making it easier for insulation and will place less stress on the tank roof. Once installed in the field it is serviceable without removing it from the tank due to its top entry design.
It is a pilot-operated valve - when the tank pressure falls below the set pressure, the valve opens and allows sufficient blanket gas into the tank to bring the pressure back to the valve set pressure. Soft seats and seals are used to assure tightness in shutoff when the correct pressure is reached. The use of a blanketing valve can be cost saving as the immediate outlay will be less than other systems and the cost of ownership is low. Mitech is the local agent for Cashco.
Mitech
(011) 462 2160
[email protected]
www.mitech.co.za
Further reading:
Cryogenic valve limits leakage and energy loss
Valves, Actuators & Pump Control
Emerson has introduced the Fisher IC2 cryogenic top-entry control valve, ideal for cold box applications in air separation units, hydrogen liquefaction and LNG production.
Read more...
Internationally engineered valves support uptime in tough conditions
Bearing Man Group t/a BMG
Valves, Actuators & Pump Control
BMG’s Fluid Technology division works closely with industry in sub-Saharan Africa to ensure that all valves, strainers and flow control equipment supplied meet the exact requirements of every application and also conform with stringent industry standards.
Read more...
Allmech introduces new water treatment solutions
Valves, Actuators & Pump Control
Allmech has announced a series of product updates aimed at improving reliability, efficiency and system simplicity in high-volume and high-hardness water environments.
Read more...
Duplex valve improves continuous production at Gauteng manufacturing facility
Valves, Actuators & Pump Control
In a recent installation at a Gauteng-based manufacturer of household and personal care products, Allmech provided a tailored water treatment solution to ensure a consistent supply of soft water for steam generation, an essential element in the client’s 24/7 production cycle.
Read more...
Developing solutions for SA’s wastewater challenges
Valves, Actuators & Pump Control
KSB Pumps has a proud global legacy in the development of self-priming pump technology, which reflects decades of engineering innovation and application expertise. Building on this foundation, KSB’s AU series has extended the company’s self-priming expertise into screened wastewater handling, which meets the growing needs of municipal and industrial sectors worldwide.
Read more...
Helping to solve wastewater challenges
Valves, Actuators & Pump Control
KSB Pumps and Valves is doubling its efforts to help government and municipalities find practical and technical solutions to the growing wastewater challenges gripping large parts of the country.
Read more...
Ultra-durable stainless steel submersible pumps
Valves, Actuators & Pump Control
KSB Pumps and Valves has launched a rugged stainless-steel submersible pump range designed for deep borehole use and other demanding freshwater and saline pumping applications.
Read more...
Industrial valve solutions
Bearing Man Group t/a BMG
Valves, Actuators & Pump Control
BMG’s Fluid Technology division supplies and supports an extensive range of components for fluid technology systems. These include valves, hydraulic hoses and fittings, accumulators, cylinders, heat exchangers, hydraulic motors and hydraulic plumbing, as well as pumps and reservoir accessories.
Read more...
New wastewater pump for local municipalities and industries
Valves, Actuators & Pump Control
The latest wastewater pump from KSB Pumps and Valves is making waves in the industry due to a host of new features that provide users with an ultra-durable long service pump with fewer blockages and a lower maintenance requirement than traditional pumps.
Read more...
The critical role of check valves in fluid systems
Valves, Actuators & Pump Control
In fluid power systems, the performance and reliability of the entire operation often hinge on components that are small in size but significant in function. Among these, the check valve stands out as a fundamental yet frequently overlooked element.
Read more...
printer friendly version