Embodiments of a portable verification system can move from one in-field gas flow meter location to another and temporarily connect downstream of a main pipeline's meter run or station. A control valve of the portable verification system allows volume measurement at different flow velocities to be verified. In some embodiments, the portable verification system is connected to the meter run and the main pipeline by an adjustable pipeline section. This section can extend horizontally and vertically, as well as swivel to provide versatility when connecting in the field. Adaptor fittings having one flange sized for and fitted to the inlet and outlet ends of the portable verification system and another flange sized for the meter run or main pipeline connection provide additional versatility. Downtime is limited to the time required to complete a circuit between the meter run, portable verification system, and main pipeline.

A coupler for connecting a first fluid conveying member and a second fluid conveying member includes a first coupler half, a second coupler half, and a conductive gasket. In embodiments, at least one of the first coupler half and the second coupler half include an annular groove configured to receive at least a portion of the conductive gasket; the conductive gasket comprises non-metallic material, the first coupler half and the second coupler half are configured to connect and circumferentially surround portions of said first and second fluid conveying members, and the conductive gasket provides a portion of a conductivity path from a first end of the coupler to a second end of the coupler, and may be part of a conductivity path from a first fluid conveying member to a second fluid conveying member. Embodiments of a non-metallic conductive gasket and methods of making a coupler assembly are also disclosed.

A coupler for connecting a first fluid conveying member and a second fluid conveying member includes a first coupler half, a second coupler half, and a conductive gasket. In embodiments, at least one of the first coupler half and the second coupler half include an annular groove configured to receive at least a portion of the conductive gasket; the conductive gasket comprises non-metallic material, the first coupler half and the second coupler half are configured to connect and circumferentially surround portions of said first and second fluid conveying members, and the conductive gasket provides a portion of a conductivity path from a first end of the coupler to a second end of the coupler, and may be part of a conductivity path from a first fluid conveying member to a second fluid conveying member. Embodiments of a non-metallic conductive gasket and methods of making a coupler assembly are also disclosed.

A fluid system and a blind-mate fluid fitting is provided. The blind-mate fluid fitting includes a shoulder and fitting portion extending from one side of the shoulder. The fitting portion defines a central fitting axis and is operable to inserted into a fluid port of a component. The fluid port defines a central port axis. The fitting portion includes a sealing portion that is operable to seal against the fluid port when the central fitting axis is positioned at a zero angle and at least one of a plurality of different non-zero angles relative to the central port axis.

A fluid system and a blind-mate fluid fitting is provided. The blind-mate fluid fitting includes a shoulder and fitting portion extending from one side of the shoulder. The fitting portion defines a central fitting axis and is operable to inserted into a fluid port of a component. The fluid port defines a central port axis. The fitting portion includes a sealing portion that is operable to seal against the fluid port when the central fitting axis is positioned at a zero angle and at least one of a plurality of different non-zero angles relative to the central port axis.

The method of providing a clamping connection comprising providing one or more clamping hubs, providing two or more clamping segments to engage the clamping hubs, constraining the clamping segments to move approximately radially with respect to the clamp hubs, providing a tension band around the clamping segments which slides circumferentially relative to the clamping segments, and adjusting the ratio of the contact area of the tension band to the clamping hubs and the area of the clamping hubs to compensate for the difference in loading on the clamping hub due to sliding friction between the tension band and the clamping hubs.

Embodiments of a portable verification system can move from one commercial building or residential home gas flow meter location to another and temporarily connect to the building's or home's natural gas piping. The portable verification system may be connected to the gas flow meter by a flexible hose having a lap joint flange at one end. Adaptor fittings can be used to provide additional versatility. When in an intended use, natural gas flows into the reference meter and then into the gas flow meter connected to the commercial building or residential home. Downtime is limited to the time required to complete a circuit between the gas flow meter and the portable verification system.

A construction system for a connection arrangement for media lines, wherein the connection arrangement has a connection body with a receiving opening for a media line and with internal parts for interacting with the media line and providing axial guidance, mechanical locking to prevent detachment, peripheral sealing and, where applicable, internal radial support. Various internal parts can optionally be inserted into the connection body, which is designed to be identical in respect of the internal contour of the receiving opening, and for a particular maximum external line diameter, in order to adapt to at least two dissimilar media lines having different cross-sectional dimensions. The internal parts are adapted, on the one hand, to the permanently identical internal contour of a receiving opening of the connection body and, on the other hand, to the cross-sectional dimension of one of the dissimilar media lines.

A polymeric device for protection of the connecting pipe coupling contains a stepped bushing having a medium part with an increased diameter and two lateral parts with a smaller outside diameters, which is installed between end faces of pipes with a conic thread, and connected by means of a coupling and having sealing rings made of an elastomer, which are on parts of the bushing with the small diameter. The device has an additional stepped bushing, and the first stepped bushing has a constant outside diameter and two parts with small and large internal diameters, and the second stepped bushing has a constant internal diameter and two parts with small and large diameters.

A fitting includes: a first member; a second member coupled by screw coupling with the first member; and a ferrule placed in an accommodation space between the first member, the second member, and a pipe. The ferrule has a rising portion including a first end portion, a pressed portion located closer to a second end portion than the rising portion, and an intermediate portion including a portion where an inner diameter is greater than the first end portion and the second end portion, the intermediate portion connecting together the rising portion and the pressed portion. The first member has a first tapered inner circumferential surface, which is an inner circumferential surface having a tapered shape, to be in contact with the first end portion of the ferrule. The second member has a pressing portion for pressing at least a portion of the pressed portion of the ferrule. The accommodation space provides a clearance for accommodating the ferrule and allowing the rising portion to rise so as to increase an angle of the rising portion.