The NF-E29-190-2 standard, a French standard, describes the requirements for construction, operation, test techniques and marking of type B gas pressure regulating devices. This standard contains specifications for gas pressure regulating devices (regulators) intended for installation in fuel gas distribution networks or connections, for an inlet pressure of less than 5 bar and a volumetric flow rate of less than 200 m3/s. This standard defines the requirements for the construction, operation, test methods and marking of type B regulators with a flow rate between 6 and 30 m3/h.
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A gas pressure regulator is a device that cuts off the flow of a gas or liquid when it reaches a certain pressure. In this way it maintains the defined pressure of a system. Pressure regulators are manufactured in various types and configurations and are used for control purposes in a variety of applications in the oil and gas processing field. In general, pressure regulators are divided into two groups: direct operated or pilot operated.
A direct-actuated regulator is a self-acting regulator and is the simplest type of regulator. In this regulator, adjustments are made on the regulator itself rather than on a connected pilot. The main components of this regulator are a plug and seat, a diaphragm and a spring. Direct-actuated regulators respond directly to outlet pressure changes and the flow is adjusted to the pressure setpoint. The outlet pressure opposes the force of the spring, which determines the position of the plug.
Pilot-operated regulators have a very similar design and the same components as directly operated regulators, only with an additional pilot. A pilot-operated regulator is more sensitive to changes in conditions. Another difference in design is the presence of an external sensing line . Essentially, the pilot allows the regulator to control pressure more efficiently.
Our company, among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, with its trained and expert staff and advanced technological equipment, the construction, operation, test techniques of B type gas pressure regulation devices within the scope of NF-E29-190-2 standard. It also provides testing services for marking and marking.
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