Constant gas pressure with drastically varying flowrates
Witt, a gas engineering specialist, has further improved its dome pressure regulators. The new generation with optimised pilot pressure regulators maintains the working pressure with greater stability, even with varying flow rates and fluctuating inlet pressures
Users can benefit from maximum process reliability and reproducible product quality. The improved pilot pressure regulators can also be retrofitted.
With various conventional pressure regulators, the outlet pressure drops as soon as the flow rate increases. This is relevant in industrial applications where multiple machines or workstations require gas intermittently. If several require the gas supply system simultaneously, the available pressure drops, production processes are not optimally supplied, and quality can be impaired. Witt dome pressure regulators can prevent this effect and offer greater pressure stability due to their new design.
The design revision of the integrated pilot pressure regulator enables the dome pressure regulator to maintain stable outlet pressure under dynamic operating conditions. For users, this means planning reliability in the process: gas pressure drops and fluctuations due to load peaks are avoided, even when consumers are switched on or off.
Under constant working pressure, machines and systems can operate continuously within the intended operating conditions for optimal performance. Additionally, existing Witt dome pressure regulator users can benefit from this optimisation via retrofit of the new pilot gas regulator.
Dome pressure regulators do not use a spring; instead, they rely on the pressure of a control gas, which enables a particularly sensitive and rapid response to pressure changes. Witt has worked to optimise this technology for several years, resulting in control characteristics that ensure an almost horizontal pressure curve across the entire flow rate range.
The set pressure remains constant, even under fluctuating flow rates, temperatures, or inlet pressure fluctuations and even down to a pressure of 1 bar. Users can benefit from consistently stable operating conditions without requiring ongoing adjustments.
Witt dome pressure regulators are available in a Smart version that combines the mechanical precision of the regulators with modern sensor technology and electronics. The systems record and transmit key parameters, such as pressure, temperature, and flow, enabling continuous monitoring. This makes the regulators an integral part of modern, networked production environments, providing additional safety, efficiency, and predictive maintenance planning.
Witt provides dome pressure regulators made of brass or stainless steel for almost all industrial gases, including oxygen, nitrogen, argon, hydrogen, carbon dioxide, and mixed gases. They are available individually or as a fully assembled set, including a pilot pressure regulator, pressure gauges, and connections.
The regulators can be utilised for inlet pressures up to 40 barg and provide control ranges from 0.5 to 30 barg with maximum flow rates up to 15,000Nm³/h for N2 and Hv values up to 30. In addition, special high-pressure models are created for a maximum operating pressure of 300 barg and working pressures from 0.5 to 60 barg. Threaded and flanged connections from G 3/4” to G 3” / DN100 – DIN or ANSI are available.
Witt dome pressure regulators comply with relevant standards and norms, are CE marked and fulfil the Pressure Equipment Directive PED 2014/68/EU, and EIGA/CGA standards. An ATEX 2014/34/EU manufacturer’s decleration is also available on request.
