A penetration fitting assembly includes a base assembly including first and second gasket halves and first and second base halves, a pipe gasket, and a cap assembly including first and second cap halves. The gasket halves each include first and second semi-annular portions, and the base halves each include a semi-annular face plate defining openings, a semi-annular groove in a front surface of the face plate, a reinforcement flange extending along an outer peripheral edge of the face plate, and a second semi-annular groove in an outer surface of the reinforcement flange. The pipe gasket includes an annular portion defining a central opening, and stem portions extending in opposite directions from the annular portion. The cap halves each include a semi-cylindrical sidewall defining a semi-annular groove, a semi-circular cap plate connected to the semi-cylindrical sidewall, and a channel defined by the semi-circular cap plate.

A penetration fitting assembly includes a base assembly including first and second gasket halves and first and second base halves, a pipe gasket, and a cap assembly including first and second cap halves. The gasket halves each include first and second semi-annular portions, and the base halves each include a semi-annular face plate defining openings, a semi-annular groove in a front surface of the face plate, a reinforcement flange extending along an outer peripheral edge of the face plate, and a second semi-annular groove in an outer surface of the reinforcement flange. The pipe gasket includes an annular portion defining a central opening, and stem portions extending in opposite directions from the annular portion. The cap halves each include a semi-cylindrical sidewall defining a semi-annular groove, a semi-circular cap plate connected to the semi-cylindrical sidewall, and a channel defined by the semi-circular cap plate.

A cable gland for use in a hazardous environment that includes a hub body having an opening extending therethrough. A gland nut is configured to engage an end of the hub body to define an inner cavity. The gland nut has a first inner annular step and a second inner annular step. A seal, ring and spring are disposed in the inner cavity. The spring is disposed in the inner cavity between a surface of the ring and an opposite-facing frustoconical surface. When the gland nut is in a first position, the first inner annular step engages the first end of the seal. When the gland nut is in a second position, the second inner annular step engages the ring and the seal is deflected radially inward. When the gland nut is in a third position, the spring is deflected radially inward.

A cable gland for use in a hazardous environment that includes a hub body having an opening extending therethrough. A gland nut is configured to engage an end of the hub body to define an inner cavity. The gland nut has a first inner annular step and a second inner annular step. A seal, ring and spring are disposed in the inner cavity. The spring is disposed in the inner cavity between a surface of the ring and an opposite-facing frustoconical surface. When the gland nut is in a first position, the first inner annular step engages the first end of the seal. When the gland nut is in a second position, the second inner annular step engages the ring and the seal is deflected radially inward. When the gland nut is in a third position, the spring is deflected radially inward.

A fluid sealing device for sealing an opening of an installation pipe in which at least a long object is installed includes: a flange configured to close the opening of the installation pipe, the flange having a hole through which the long object is made to pass, and the flange having a stop face that is continuous with and at an angle to an inner surface of the hole; one or more sealing members configured to be disposed on an outer periphery of the long object and configured to exert an urging force toward an axial center of the long object upon being compressed in an axial direction of the long object, thereby sealing a gap between the flange and the long object; and a clamping member configured to press the one or more sealing members toward the stop face.

A fluid sealing device for sealing an opening of an installation pipe in which at least a long object is installed includes: a flange configured to close the opening of the installation pipe, the flange having a hole through which the long object is made to pass, and the flange having a stop face that is continuous with and at an angle to an inner surface of the hole; one or more sealing members configured to be disposed on an outer periphery of the long object and configured to exert an urging force toward an axial center of the long object upon being compressed in an axial direction of the long object, thereby sealing a gap between the flange and the long object; and a clamping member configured to press the one or more sealing members toward the stop face.

A trench is dug under an above ground water storage tank either before erection of the walls or after the wall is erected. A (rectangular) sump is preferably made of ? inch steel. It serves as a conduit from an inner tank liner port to an outside tank fill or drain port. The system eliminates hoses hung over the top edge of the tank wall. A pump can fill the tank from the outer port. The tank can be drained using head pressure of the water and/or a pump.

The disclosure relates to a contact-making system for electromagnetically compatible high-current applications. The contact-making system includes a screw bushing, an actuating element and a clamping element. The clamping element includes at least one inner lateral surface and at least a first end face. The screw bushing includes a connecting thread on a first side of the screw bushing, for connection to a connecting geometry. The actuating element includes a counterpressure end face. An inner radius of the clamping element is reduced by means of a radial force. The actuating element is screwed to the first side of the screw bushing, where the radial force is applied to at least the first end face of the clamping element by screwing the actuating element to the screw bushing, and the counterpressure end face of the actuating element is brought into contact with a first end face of the clamping element.

The disclosure relates to a contact-making system for electromagnetically compatible high-current applications. The contact-making system includes a screw bushing, an actuating element and a clamping element. The clamping element includes at least one inner lateral surface and at least a first end face. The screw bushing includes a connecting thread on a first side of the screw bushing, for connection to a connecting geometry. The actuating element includes a counterpressure end face. An inner radius of the clamping element is reduced by means of a radial force. The actuating element is screwed to the first side of the screw bushing, where the radial force is applied to at least the first end face of the clamping element by screwing the actuating element to the screw bushing, and the counterpressure end face of the actuating element is brought into contact with a first end face of the clamping element.

An apparatus may be used for isolation of a wall or a surface between internal and external environments. The apparatus may comprise an enclosure housing a metal plate and configured for sealing and attaching to the wall, and any metal plate herein may be having at least first, second, and third openings for passing pipe, cable, or gas through the wall. The apparatus may further comprise sealing nuts installed in the first, and second openings for passing a cable or wires while sealing the first and second openings; and a sealing nipple installed in the third opening and operative to pass gas via a pipe between the internal and the external environments while sealing the third opening. The metal plate may comprise holes and may be attached to the enclosure using multiple threaded screws and nuts via the holes.