German gas technology specialist WITT has today unveiled one of the most powerful dome pressure regulators ever in the form of the 767LE/S.

The new product is the latest in a long line of pressure regulator products from the company and, WITT says, is based on its proven 757LE/S predecessor but provides a 3-inch connection for a DN80/100 flange.

With the 767LE/S WITT has also increased the flow rate threefold to a maximum of 17,000 Nm3/h – such a flow performance enables precise control within the limit range.

In contrast to other providers, WITT has opted for high-precision swivels, instead of brass casting. This ensures maximum safety and reliability, the company says. Although other manufacturers may have regulators made from machined parts in their portfolio, these will not be in the same performance range for all common gases, including oxygen, or in the same price segment.

The 767LE/S is tested and available ready for installation in the proven set with pilot control pressure regulator, pressure gauges and fittings.

Precision as design principle

Dome pressure regulators keep the gas pressure in the downstream working process constant, regardless of pressure fluctuations in the gas supply.

The fittings are therefore considered an indispensable element in the quality assurance of numerous production processes.

WITT claims that a ‘further unique feature’ of the new 767LE/S is its high backpressure constancy, even at high withdrawal fluctuations. The device provides an outlet pressure of 0.5 to 30 bar (7.25 to 435 psi) and is designed for inlet pressures up to 40 bar/580 psi, depending on the gas type.

It is a closed system, with the pressure regulated via the line gas (process medium) and no gas flowing out, though operation with separate control gas is a possible alternative.

The set working pressure can be adjusted as required by the user, for process changes, for example. Multiple gas supplies can also be brought centrally to a common working pressure, which can be controlled remotely via the pilot control pressure regulator or even a proportional valve.