Mechanical fail-safe solutions exist for electric driven valves, however mainly for on-off applications. For control valves often the only solution is ‘stay-put’ upon electric power failure since for mechanical fail-safe the electric actuator shall overcome both the thrust to move the valve and the spring force. The Mokveld axial flow valves require very low forces, since they are fully pressure balanced. This inherent design feature makes electric fail-safe control valves possible, even for large or high pressure valves.
Introducing a new product or technology to the well-established control valve market does not come without challenges. One of the largest hurdles met in the introduction of new technology is typically cost, whether it be direct monetary cost, or indirect costs like loss of efficiency, retooling costs and training costs for operators. When new, more efficient technology is available, the decision to make a change should be simple, and should never need be impacted by excessive switching costs.
Zwick Armaturen GmbH manufactures state-of-the-art process and control valves for highly demanding applications.
One of our greatest unique selling points, in addition to our short delivery times and high adherence to delivery schedules, is our quality.
As an innovation leader, we start where others stop.
Zwick’s range includes 100% metal-seated butterfly valves in the TRI-CON series, check valves in the TRI-CHECK series, the double block and bleed version of the TRI-BLOCK series (SIL3 capable), and the TRI-SHARK control valve (equal percentage).
A commitment to product development and supporting customers in critical applications leads the sealing solutions experts at James Walker to a new offering for ultra-high temperature applications, specifically aimed at the renewable energy sector.
Renewable energy is one of the fastest-growing energy sources in many well developed as well as developing countries, with solar energy becoming increasingly popular for generating electricity or heating and desalinating water.
Pump Protection for Large Power, Petrochemical, or Oil and Gas Pump Applications
An alternative pump protection solution using automatic recirculation valves (ARVs) enables improved operational efficiency for large pumps. For example, ARVs by CIRCOR | SCHROEDAHL combine a high-quality check valve with a bypass control mechanism that uses a pressure-independent and low-friction mechanical control. Continue reading »
Water Hammer and Its Effects on Valves Operation
As we know, most liquids are considered non-compressible which means that no matter how much pressure is applied to them we can not modify their volume, they are not elastic. Continue reading »
ValvTechnologies Integrates Augmented Reality Tool To Provide First-Class Remote Service Support
ValvTechnologies, the leading manufacturer of zero-leakage, severe service isolation valve solutions, today introduced VirtualValv Support™, an on-demand augmented reality tool to provide remote installation, maintenance support service, anytime, anywhere.
On February 15, 1921, McJunkin Supply Company was founded in the hills of West Virginia, and over the next 100 years, companies from around the world would be established and grow into what is now known as MRC Global. Continue reading »
High standard valves for non-standard conditions, Zwick is a leading manufacturer of metal-seated triple offset butterfly valves known as series TRI-CON, the check valves, called TRI-CHECK and the TRI-BLOCK series, Zwick’s Double Block and Bleed Design. Continue reading »
James Walker
We supply high performance fluid sealing products and services, from research and development, manufacture and supply, to on-site maintenance and seal installation. In-depth knowledge and expertise of a wide range of industrial processes enables us to solve customers’ fluid sealing issues with highly effective best value systems. Continue reading »
Mokveld
Mokveld is specialized in designing and manufacturing axial control-, check-, on/off-, choke- and surge relief valves with associated instrumented systems. HIPPS or low shear valves. Tailor-made to application and customers specifications and for mission critical control and safety applications in the energy or water industry. Sizes from 2” up to 84” with pressure ratings up to 2500# and API 15.000. Continue reading »
Clarke Valve
Founded in 2011, Clarke Valve provides high quality industrial control valves to organizations worldwide and is a portfolio company of Saudi Aramco Energy Ventures, Chevron Technology Ventures, and OGCI Climate Investments. Using aerospace design principles, Clarke has developed the Shutter Valve™, the first major innovation in valve design in the last fifty years. Continue reading »
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