Union Manufacturer,Supplier and Exporter in India
Product Code : EL-MWLE-13041
Jlab Export is a leading Union Manufacturer,and suppliers in India
A union joins two lengths of tube in a straight line through threaded ends, so the line can be opened again without cutting. This brass union has male ends and is made in 1/4, 5/16, 3/8, 1/2 and 9/16 inch sizes. Service technicians use one to repair or extend a short flare-connected line.
Specifications
| Material | Brass |
| Ends | Male |
| Sizes | ¼, 5/16, 3/8, ½ and 9/16 inch |
| Minimum order quantity | 100 units |
| Dispatch time | Usually 3–5 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Workshop Practice with Brass Unions
A common exercise is repairing a damaged line. Students cut out the bad section with a Tube Cutter, ream both ends with a Reamer and fit a flare nut on each. They flare the two ends with an Eccentric Flaring Tool and make up the union between them.
The repaired line is pressurised with a Nitrogen Pressure Test Kit, and both flares are checked for bubbles. Teachers can compare the union repair with a brazed repair made with copper tube and a Brazing Rod, and discuss where each is used.
Frequently Asked Questions
How does a flare union seal?
Each tube end is flared, and the flare nut presses that flare against the cone on the union end. The metal-to-metal contact makes the seal, while the threads only hold the parts together.
Can a union be reused?
The union body can be refitted, but a flare that has been tightened once may not seal a second time. If a reused joint leaks, cut off the old flare and make a new one.
Which size union fits my line?
Match the union to the outside diameter of the tube in inches. It is made in 1/4, 5/16, 3/8, 1/2 and 9/16 inch sizes.
Where should a flare union not be used?
Avoid it inside walls, ceilings or other closed spaces where a leak cannot be seen or reached. A brazed joint suits those places better because it is permanent.
Other Flare Fittings for Line Repairs
- Tee Fitting (brass, male ends)
- Flare Fitting Set
- Flare To Solder Fitting
- Hydraulic Flaring And Swaging Tool Kit
For a quote, use Add To Cart or send us a message through the contact page.
Last updated: 5 November 2026
