TECHNICAL FIELD

This disclosure relates to pipe connections. More specifically, this disclosure relates to a joint restraint for a mechanical joint pipe connection.

BACKGROUND

Mechanical joint pipe connections are a common method for attaching a pipe length to a piping element such as a valve, a coupling, or a fitting, such as a tee or elbow, or another pipe. The mechanical joint pipe connection can comprise a female socket, a gland, a gasket, and a pipe length. The piping element commonly defines a female socket configured to receive a plain end of the pipe length and a gasket. A gland is commonly provided which slips over the plain end of the pipe length, and the gland is tightened by a series of bolts which draw the gland towards the female socket, thereby compressing the gasket. Compression of the gasket causes the gasket to engage an outer surface of the plain end of the pipe length, thereby forming a seal between the pipe length and the element.

Mechanical joint pipe connections are popular because mechanical joint pipe connections function with the plain end of the pipe length, unlike groove connections or flanged connections that require preparation of the plain end of the pipe length. The ability to function with the plain end allows for the pipe length to be cut to size in a field installation without requiring the time and field equipment necessary to weld a flange to the plain end or to cut a new groove in the plain end. Mechanical joint pipe connections can be assembled quickly with common hand tools such as a wrench or ratchet.

However, typical mechanical joint pipe connections do not provide for a positive retention mechanism other than friction of the gasket acting on the plain end of the length. The lack of a positive retention mechanism can compromise the seal or lead to the plain end pulling out of the female socket when the connection is subjected to high tension force or effects such as water hammer. Some mechanical joint pipe connections can incorporate a joint restraint mechanism configured to mechanically engage the plain end of the pipe; however, existing joint restraint mechanisms can exert high stresses upon the plain end of the pipe length which can lead to deformation, creep, and cracking of the plain end of the pipe length during installation or operation. Deformation, creep, and cracking can lead to failure of the seal or failure of the pipe length itself which can result in leaks or environmental contamination.

SUMMARY

It is to be understood that this summary is not an extensive overview of the disclosure. This summary is exemplary and not restrictive, and it is intended to neither identify key or critical elements of the disclosure nor delineate the scope thereof. The sole purpose of this summary is to explain and exemplify certain concepts of the disclosure as an introduction to the following complete and extensive detailed description.

Disclosed is a gland assembly comprising a gland comprising an annular ring defining a fastener hole; and a joint restraint assembly comprising a restraint base, the restraint base attached to the annular ring; and a cover comprising a cover portion removably attached to the restraint base; and a bolt stop portion covering the fastener hole, the bolt stop portion extending laterally outward from the cover portion.

Also disclosed is a cover comprising a cover portion, the cover portion defining a pair of opposing sidewalls; and a bolt stop portion extending laterally outward from a first sidewall of the pair of opposing sidewalls.

Also disclosed is a method for forming a mechanical joint pipe connection between a piping element and a pipe length, the method comprising inserting a pipe end of the pipe length through a gland and into a female socket defined by the piping element, a fastener hole of the gland covered by a cover, the cover attached to the gland; removing the cover from the gland; inserting a fastener through the fastener hole of the gland; and fastening the gland to a flange defined by the piping element.

Various implementations described in the present disclosure may include additional systems, methods, features, and advantages, which may not necessarily be expressly disclosed herein but will be apparent to one of ordinary skill in the art upon examination of the following detailed description and accompanying drawings. It is intended that all such systems, methods, features, and advantages be included within the present disclosure and protected by the accompanying claims. The features and advantages of such implementations may be realized and obtained by means of the systems, methods, features particularly pointed out in the appended claims. These and other features will become more fully apparent from the following description and appended claims, or may be learned by the practice of such exemplary implementations as set forth hereinafter.

