Abstract: A purge valve comprising a valve body having a first primary loop port, a second primary loop port, a first secondary loop port and a second secondary loop port is provided. The secondary loop ports are disposed at respective ends or a linear secondary loop portion of the valve body. A primary loop portion of the valve body is formed by a pair of closely spaced tees extending from the secondary loop portion. At least one main valve portion is disposed in a first one of the tees. A drain/venting valve portion extends from the main valve portion. A portion of the secondary loop portion between the tees is shared with the primary loop portion in which flow in a primary loop and a secondary loop are hydraulically separated. A second drain/venting valve portion may be provided in a second one of the tees.

Abstract: An in-line measuring device including a connector configured to install the in-line measuring device in a fluidic system. The connector having a first fluid flow path therein. A container having a first end and a second end, wherein the first end is disposed in the connector and in communication with the first fluid flow path. A measuring float is disposed in the container, and a measuring marking is located on the container to indicate a ratio, percent, and/or concentration of fluid within the fluidic system.

Abstract: A near-boiler piping loop apparatus is provided including a primary/secondary piping loop interface apparatus having a unitary construction including a secondary loop shut-off valve, drain valve and drain port in each branch of a secondary loop for connection to a boiler. Supply branch piping and return branch piping connects the interface apparatus to the boiler and provides attachment points for auxiliary plumbing equipment. The apparatus is adapted to connect to pump in variable orientations using rotatable flanges on the interface apparatus and on a wye strainer in the secondary loop supply branch and includes a union fitting attached to the interface apparatus. The union fitting provides a mounting hole for a temperature or pressure gauge.

Abstract: A rotatable flange structure is provided which is integrally or monolithically formed with a Y-strainer. The rotatable flange structure can be installed over the front-mating surface of the Y-strainer. A retaining ring fits inside the grooves on the outer edge of a flange portion and on the inner edge of a mounting plate to keep the mounting plate attached to the flange portion. The flange portion can be assembled to the mounting plate and can be removed from the mounting plate in only one direction. The mounting plate may be prevented from completely being removed from the Y-strainer by an angular branch of the Y-strainer body. The retaining ring is compressed slightly by the flange portion as the rotatable mounting plate is installed to the flange portion and snaps back out into the mounting plate groove to complete the assembly and retain the mounting plate to the flange portion.

Abstract: A primary-secondary loop piping system includes at least one boiler in fluid communication with a primary piping loop and at least one primary loop pump in the primary piping loop. At least one secondary piping loop branches away from the primary loop and returns downstream to the primary loop via a pair of closely spaced tees in a primary/secondary piping loop interface apparatus. The primary/secondary piping loop interface apparatus is of unitary construction and includes a secondary loop shut-off valve, drain valve and drain port in each branch of each secondary loop in which it is installed.

Abstract: A primary-secondary loop piping system includes at least one boiler in fluid communication with a primary piping loop and at least one primary loop pump in the primary piping loop. At least one secondary piping loop branches away from the primary loop and returns downstream to the primary loop via a pair of closely spaced tees in a primary/secondary piping loop interface apparatus. The primary/secondary piping loop interface apparatus is of unitary construction and includes a secondary loop shut-off valve, drain valve and drain port in each branch of each secondary loop in which it is installed.

Abstract: A fluid isolation valve having a valve body with a first fluid flow port, a second fluid flow port and a fluid drain port with a valve in the fluid drain port. The valve body also defines a fluid flow channel, a drain flow channel and a valve portion, wherein the valve portion is disposed in the valve body to be communicated with the first fluid flow port, the second fluid flow port and the fluid drain port. A flow diversion device is also provided and is disposed within the valve portion. The flow diversion device is configurable between a first configuration and a second configuration, such that when the flow diversion device is in the first configuration the first fluid flow port is communicated with the second fluid flow port. Consequently, when the flow diversion device is in the second configuration the first fluid flow port is communicated with the fluid drain port. The fluid flow can be decrease or stop by use of the valve within the fluid drain port.

Abstract: A near-boiler piping loop apparatus is provided including a primary/secondary piping loop interface apparatus having a unitary construction including a secondary loop shut-off valve, drain valve and drain port in each branch of a secondary loop for connection to a boiler. Supply branch piping and return branch piping connects the interface apparatus to the boiler and provides attachment points for auxiliary plumbing equipment. The apparatus is adapted to connect to pump in variable orientations using rotatable flanges on the interface apparatus and on a wye strainer in the secondary loop supply branch and includes a union fitting attached to the interface apparatus. The union fitting provides a mounting hole for a temperature or pressure gauge.

Abstract: A fluid isolation valve having a valve body with a first fluid flow port, a second fluid flow port and a fluid drain port with a valve in the fluid drain port. The valve body also defines a fluid flow channel, a drain flow channel and a valve portion, wherein the valve portion is disposed in the valve body to be communicated with the first fluid flow port, the second fluid flow port and the fluid drain port. A flow diversion device is also provided and is disposed within the valve portion. The flow diversion device is configurable between a first configuration and a second configuration, such that when the flow diversion device is in the first configuration the first fluid flow port is communicated with the second fluid flow port. Consequently, when the flow diversion device is in the second configuration the first fluid flow port is communicated with the fluid drain port. The fluid flow can be decrease or stop by use of the valve within the fluid drain port.

Abstract: A fluid isolation valve having a valve body with a first fluid flow port, a second fluid flow port and a fluid drain port with a valve in the fluid drain port. The valve body also defines a fluid flow channel, a drain flow channel and a valve portion, wherein the valve portion is disposed in the valve body to be communicated with the first fluid flow port, the second fluid flow port and the fluid drain port. A flow diversion device is also provided and is disposed within the valve portion. The flow diversion device is configurable between a first configuration and a second configuration, such that when the flow diversion device is in the first configuration the first fluid flow port is communicated with the second fluid flow port. Consequently, when the flow diversion device is in the second configuration the first fluid flow port is communicated with the fluid drain port. The fluid flow can be decrease or stop by use of the valve within the fluid drain port.

Abstract: A fluid isolation valve having a valve body with a first fluid flow port, a second fluid flow port and a fluid drain port with a valve in the fluid drain port. The valve body also defines a fluid flow channel, a drain flow channel and a valve portion, wherein the valve portion is disposed in the valve body to be communicated with the first fluid flow port, the second fluid flow port and the fluid drain port A flow diversion device is also provided and is disposed within the valve portion. The flow diversion device is configurable between a first configuration and a second configuration, such that when the flow diversion device is in the first configuration the first fluid flow port is communicated with the second fluid flow port Consequently, when the flow diversion device is in the second configuration the first fluid flow port is communicated with the fluid drain port. The fluid flow can be decrease or stop by use of the valve within the fluid drain port.

Abstract: A purge valve comprising a valve body having a first primary loop port, a second primary loop port, a first secondary loop port and a second secondary loop port is provided. The secondary loop ports are disposed at respective ends or a linear secondary loop portion of the valve body. A primary loop portion of the valve body is formed by a pair of closely spaced tees extending from the secondary loop portion. At least one main valve portion is disposed in a first one of the tees. A drain/venting valve portion extends from the main valve portion. A portion of the secondary loop portion between the tees is shared with the primary loop portion in which flow in a primary loop and a secondary loop are hydraulically separated. A second drain/venting valve portion may be provided in a second one of the tees.

Abstract: A fluid isolation valve having a valve body with a first fluid flow port, a second fluid flow port and a fluid drain port with a valve in the fluid drain port. The valve body also defines a fluid flow channel, a drain flow channel and a valve portion, wherein the valve portion is disposed in the valve body to be communicated with the first fluid flow port, the second fluid flow port and the fluid drain port A flow diversion device is also provided and is disposed within the valve portion. The flow diversion device is configurable between a first configuration and a second configuration, such that when the flow diversion device is in the first configuration the first fluid flow port is communicated with the second fluid flow port Consequently, when the flow diversion device is in the second configuration the first fluid flow port is communicated with the fluid drain port. The fluid flow can be decrease or stop by use of the valve within the fluid drain port.

Abstract: A ball valve unit for shutting off the flow of fluids flowing in heating and plumbing systems. The ball valve unit includes a ball valve and a main section including a flange formed integrally with the main section. A chamber is formed in the main section for receiving the ball of the ball valve. The main section is made of brass in order to prevent galvanic action between ball valve unit and the heating/plumbing system.