The FPD220 is a dual-chamber orifice fitting with double block and bleed isolation, designed for safe orifice plate inspection and replacement under live pipeline conditions in the oil and gas industry. It is constructed as a flange-to-flange or weld-to-weld manifold with stainless steel 316/316L internal components and ASTM A351 CF8M body casting. The fitting complies with HSG253 Category II 'Proved Isolation' requirements and is rated up to ANSI 2500 (10,000 psi or 698 bar) for sizes 2 to 12 inches, and up to ANSI 1500 for sizes 14 to 24 inches. It features integrated pressure gauges for chamber monitoring, automatic valve latches with manual reset and padlock capability, and an optional soft seat seal for bubble-tight isolation without grease lubrication. Valves are optionally fire-tested to BS6755 Part 2 and API 6FA. The device adheres to ASME B16.34, ASME B16.5, ISO 5167, and AGA-3 standards.
A dual-chamber orifice fitting with double block and bleed (DBB) isolation, suitable for fiscal (custody transfer) applications in locations where
– proven isolation is required and
– pipeline will not/cannot be shut down (or bypassed and isolated) or depressurised for service
FPD220 offers dual isolation, with two independent chamber seals, ensuring maximum safety during live orifice plate changes or during routine inspection. This is visually confirmed by two pressure gauges integrated into the unit.
| ABB Measurement & Analytics | |
|---|---|
| Product Category | Flow Orifices and Flow Restrictors |
| Product Number | FPD220 |
| Product Name | Double block and bleed, dual chamber orifice fitting |
| Connection | Female NPT |
| Fitting / Connection Size | 1/2 in. NPT female |
| Media | Hydraulic |
