Union Joint


Also found in: Dictionary.

union joint

[′yün·yən ‚jȯint]
(design engineering)
A threaded assembly used for the joining of ends of lengths of installed pipe or tubing where rotation of neither length is feasible.

Union Joint

 

a detachable joint, formed by means of a union, that is used to connect the parts of a piping system to various tanks or machines. Besides a union, a union joint consists of a gasket, a locknut, and a reducer, such as an elbow or a coupling (Figure 1). The pipe to be connected is screwed into the reducer.

Figure 1. Union joints: (a) with an elbow, (b) with a coupling; (1) union, (2) gasket, (3) locknut, (4) elbow, (5) coupling

When the locknut is loosened, the reducer, together with the pipe screwed into it, may be turned relative to the axis of the union. A rigid, airtight joint is obtained by tightening the locknut.

union joint

A pipe joint made with a union.
References in periodicals archive ?
The Unite the Union joint general secretary met staff at the Prinovis printing plant on Speke's Estuary Commerce Park yesterday.
We welcome all constructive initiatives towards that, under the overall leadership of the United Nations/African Union joint chief mediator Gibril Bassole whose work we strongly support.
The European Union Joint Research Center, the Institute for Reference Materials and Measurements, the National Institute of Standards and Technology, and the Nanotechnology Characterization Laboratory at the National Institute of Cancer are also collaborating with the IANH.
The federal lawsuit was filed against the Antelope Valley Union Joint High School District and Los Angeles County Office of Education.
Chapter President-Elect Guy Kersch and new member Sylvie Peuch are two of the ten private sector members of the 26-member European Union Joint Transfer Pricing Forum.
Yesterday Cllr Mutton, chief executive Stella Manzie and the management and union joint negotiating group signed the protection agreement, the first stage in the implementation of the system.
A Poucet, C Korn, U Meloni, I Solinas, G Fiore and M Cuypers European Union Joint Research Centre, Italy, G Caja and A Sanchez, University of Barcelona, Spain, A Fonseca, P Pinheiro and C Roquete University of Evora, Portugal.
Zebari and Ashton held a round of talks on activating the works of Iraq-European Union joint committees in the fields of democracy, human rights, energy and trade.
I would deliver a keynote speech at the opening of the 65th meeting of Turkey-European Union Joint Parliamentary Commission.
Unions and MPs fought unsuccessfully to overturn the closure decision and today Unite the Union joint general secretary TonyWoodley hit out, saying: "This order should by rights be coming to Merseyside where we have skilled manufacturing workers.
LANCASTER - Antelope Valley Union High School District's name has changed back to something like it was more than 50 years ago - the Antelope Valley Union Joint High School District.

Full browser ?