Bliss instrument chambers

Measurement industries

• Energy
• Petro-Chemical
• Refining
• Oil & Gas
• Chemical
• Process Steam
• Customer specific applications

Short description
The Bliss instrument chamber is designed to the ASME B31.3 standard, and is Pressure Equipment Directive (PED) complaint. Weld neck flanges and full penetration welds in accordance with EN ISO 15614-1:2004 and ASME Boiler and pressure Vessel Code Section IX are used throughout. All welders are qualified to EN 287-1:2004 and ASME Boiler and pressure Vessel code section IX. All construction materials have full traceability in accordance with the EN 10204 type 3.1 certificates. Every chamber is hydro-tested as standard. There are two designs available: the Standard Design and T-piece Design.

Instrument chambers can be isolated with valves for maintenance without disturbing plant operation. It is also useful for in-tank restrictions that do not allow mounting of the instrument in a vessel. This approach offers many advantages when solving application challenges. The instrument is mounted on top of the chamber with the flanged or threaded instrument connection. A thread version is available for the vertical float level switch.

T-Piece Design
T-Piece design is used, Unequal T’s are used so the larger process connections can fit on the smaller chamber body. Pressure ratings of up to and including ASME B16.5 Class 2500.

Special Requirements & Testing

• H2 Compliance
• PMI
• D.P. Test
• Radiography
• Ultra Sonic
• Approved Weld Procedures & Welder Certifications Nace Compliance
• HIC Compliance
• SP. Alloy Weldings (Alloy 825, StSt, Monel, LF2 etc.) Other testing available as required

Customer benefits

• Allows external mounting of process level instrumentation
• Ideal for critical area and general purpose applications
• 38 years of experience in designing and manufacturing chambers in accordance with international codes
• Variety of process connections and optional drain and vent connections
• Used by major industries worldwide
• Enables live maintenance
• Designed to ASME B31.3
• According to Pressure Equipment Directive (PED)
• Custom designs service available
• For use in applications up to ASME B16.5 Class 2500 and EN1092 PN250
• Available in carbon steel, stainless steel and other alloys