A thermal expansion/pressure compensator includes a body having an inlet at a first connection point and an outlet at a second connection point. The body includes a flexible member extending along a portion of the body. The body has an internal chamber configured to receive a fluid via the inlet. The internal chamber is shaped to direct fluid through the flexible member and out of the body via the outlet. The flexible member is configured to flex responsive to expansion of the body. The compensator also includes a rigid member operably coupled with the body. The rigid member is thermally and fluidly isolated from the body and the flexible member. The body, the flexible member, and the rigid member are formed as a unitary structure.

A flexible, thermal-isolating tube includes a first fluid flow channel portion having a dual-walled configuration, a second fluid flow channel portion having a dual-walled configuration, and a bellows disposed between and coupled to each of the first and second fluid flow channel portions. The flexible, thermal-isolating tube, including each of the first and second fluid flow channel portions, and the bellows, is configured as a unitary structure. The flexible, thermal-isolating tube is manufactured using an additive manufacturing process. The flexible, thermal-isolating tube is disposed within a gas turbine engine.

A flexible, thermal-isolating tube includes a first fluid flow channel portion having a dual-walled configuration, a second fluid flow channel portion having a dual-walled configuration, and a bellows disposed between and coupled to each of the first and second fluid flow channel portions. The flexible, thermal-isolating tube, including each of the first and second fluid flow channel portions, and the bellows, is configured as a unitary structure. The flexible, thermal-isolating tube is manufactured using an additive manufacturing process. The flexible, thermal-isolating tube is disposed within a gas turbine engine.

An expansion joint fitting for conveying liquid includes a radially inner bellows defining a liquid-conveying passage for conveying liquid between the first and second longitudinal ends of the expansion joint fitting. A radially outer bellows is disposed radially outward from and extending around the radially inner bellows. An annular plenum is defined between the radially inner bellows and the radially outer bellows.

A compensator, having a first corrugated bellows section, a second corrugated bellows section, an intermediate pipe section positioned between the first corrugated bellows section and the second corrugated bellows section, a first attachment flange, and a second attachment flange. The first corrugated bellows section engages the first attachment flange and intermediate pipe section. The second corrugated bellows section engages the second attachment flange and intermediate pipe section. An intermediate flange is positioned between the first attachment flange and the second attachment flange and surrounds the intermediate pipe section at the outside without a a rigid connection to the intermediate pipe section. The intermediate flange is connected by first tension rods to the first attachment flange and by second tension rods to the second attachment flange.

A flanged fitting includes an annular fitting flange having an annular end face. A glass liner lines a radially inner annular portion of the annular end face of the annular fitting flange. A radially outer annular portion of the annular end face of the annular fitting flange is free from the glass liner. The radially inner annular portion and the radially outer annular portion of the annular end face of the annular fitting flange define an annular gasket abutment face configured to seat a gasket thereon. An annular gasket includes an annular gasket layer. The annular gasket layer includes a radially inner annular gasket segment including a first material suitable for forming a liquid-tight seal with an opposing flange. A radially outer annular gasket segment surrounds the radially inner annular gasket segment. The radially outer annular gasket segment is fire-rated for forming a fire-rated seal with the opposing flange.

A vacuum connection mechanism includes: a main body part having a first opening and a first sub opening opened symmetrically in a first direction, and a second opening and a second sub opening opened symmetrically in a second direction; a first bellows connected to the first opening and to the end of which a first flange is provided; a first sub bellows connected to the first sub opening and to the end of which a first blind flange is provided; a first supporting member coupling the first flange and the first blind flange; a second bellows connected to the second opening and to the end of which a second flange is provided; a second sub bellows connected to the second sub opening and to the end of which a second blind flange is provided; and a second supporting member coupling the second flange and the second blind flange.

A vacuum connection mechanism includes: a main body part having a first opening and a first sub opening opened symmetrically in a first direction, and a second opening and a second sub opening opened symmetrically in a second direction; a first bellows connected to the first opening and to the end of which a first flange is provided; a first sub bellows connected to the first sub opening and to the end of which a first blind flange is provided; a first supporting member coupling the first flange and the first blind flange; a second bellows connected to the second opening and to the end of which a second flange is provided; a second sub bellows connected to the second sub opening and to the end of which a second blind flange is provided; and a second supporting member coupling the second flange and the second blind flange.

A system comprises a tube and a bender. The tube comprises a first cylindrical portion and a second cylindrical portion. An undulated portion is disposed between the first cylindrical portion and the second cylindrical portion. Alternatively, the tube can comprise a plurality of cylindrical portions and undulated portions. The bender comprises a plurality of L-shaped brackets and a plurality of U-shaped brackets, and further includes a driving rod subassembly.

A flexible, thermal-isolating tube includes a first fluid flow channel portion having a dual-walled configuration, a second fluid flow channel portion having a dual-walled configuration, and a bellows disposed between and coupled to each of the first and second fluid flow channel portions. The flexible, thermal-isolating tube, including each of the first and second fluid flow channel portions, and the bellows, is configured as a unitary structure. The flexible, thermal-isolating tube is manufactured using an additive manufacturing process. The flexible, thermal-isolating tube is disposed within a gas turbine engine