RP 7 X-Flow

The Gastech RP 7 x-Flow is an electronic gas installation dispersion detector built around a high-accuracy, high-repeatability thermal mass flow sensor housed in a rugged watertight yellow field case. Unlike conventional pressure-decay instruments, the unit operates on the direct air method — an integrated high-flow internal pump pushes air into the user’s gas installation, and the thermal mass flow sensor measures the air mass passing through to compensate for any installation leakage. The thermal mass measurement principle is entirely independent of fluid temperature and ambient temperature fluctuations, eliminating the thermal compensation errors that affect standard pressure-based dispersion tests. The instrument also carries an integrated tank and pump assembly, making it fully self-contained for field use without external air supply requirements. An integrated common-paper printer outputs the test certificate directly on-site, with a customizable company header on each printed record.

The microprocessor-controlled operating system keeps test procedures straightforward and repeatable across operators, reducing the risk of procedural errors during routine utility field visits. The instrument covers dispersion checks under UNI 11137 using the direct air method, and separately supports pressure testing per UNI 7129 — covering both new and existing internal gas installation verification in a single unit. It fully meets the requirements of Italian Authority Guideline L.G. 12, which governs the mandatory verification of internal gas systems at new user connections, reopenings after arrears, and emergency intervention operations. The printed certificate is immediately available for attachment to the gas distribution company’s intervention file.

The Gastech RP 7 x-Flow is deployed by gas distribution operators, utility contractors, and field technicians during mandatory gas installation verification visits — including new user connection openings, reconnections after non-payment suspension, and post-emergency inspections of internal gas systems across residential and commercial properties. It is the most complete single instrument available for meeting all L.G. 12 verification obligations across the full range of internal gas installation categories.

Leader Infra supplies this thermal mass flow dispersion detector for gas network operators and utility service contractors — delivering L.G. 12 compliant, temperature-independent internal gas installation verification with integrated on-site certificate printing in a single portable field instrument.

FAQ — Why does the RP 7 x-Flow use the direct air method instead of pressure decay for dispersion testing? The direct air method measures the actual mass of air required to compensate for installation leakage, rather than inferring leakage from pressure drop over time. This approach eliminates the thermal stabilization waiting period required by pressure-decay tests — where temperature changes from gas compression can temporarily mimic pressure loss — giving a faster, more reliable result that is not affected by ambient or fluid temperature during the test.