Valtron Forge & Fittings is a leading manufacturer, supplier, stockist, and exporter of premium quality Threaded Union in India. We offer a comprehensive range designed to meet international standards and the demanding requirements of industrial piping systems.
Our threaded unions allow pipes to be connected and disconnected repeatedly without rotating either pipe – the essential fitting wherever equipment must be removed for maintenance.
A Threaded Union is a three-piece forged fitting – two thread ends and a central union nut. Manufactured to ASME B16.11 with ground metal-to-metal or O-ring seats, it permits quick assembly and dismantling of piping around pumps, valves and instruments.

Three-piece design: two thread ends plus union nut
Connect / disconnect lines without rotating the pipe
Ground conical metal-to-metal seat for repeatable sealing
Pressure classes 2000#, 3000# and 6000#
Leak-tight NPT / BSPT / BSPP thread options
Available in all grades of stainless, carbon, alloy and nickel alloys
Sizes from 1/8” NB to 4” NB
| Parameter | Specification |
|---|---|
| Product | Threaded Union |
| Manufacturing Standards | ASME B16.11, BS 3799, MSS SP-79, MSS SP-83, MSS SP-95, MSS SP-97 |
| Material Standards | ASTM A105, ASTM A182, ASTM A350, ASTM B564 |
| International Codes | ASME, ASTM International |
| Pressure Classes | 2000#, 3000#, 6000# |
| Size Range | 1/8” NB to 4” NB |
| Thread Types | NPT (ASME B1.20.1), BSPT, BSPP |
| End Connection | Threaded / Screwed (SCRD) |
| Inspection & Testing | PMI Testing, Hardness Test, Impact Test, Hydrostatic Test, Dimensional Inspection, Visual Inspection |
| Certification | Mill Test Certificate (EN 10204 3.1 / 3.2), Third-Party Inspection (TPI) |