Black steel Unions are used in a wide range of make-and-break joints such as filters, valves, hoses, machinery etc.; general piping installations requiring periodic disconnections; high or low pressure assemblies in air, oil, gas and water.
Available in Steel-Steel, Steel-Bronze and Bronze-Bronze seats in Female-Female and Male-Female types.
Ball to Cone Seating in the following combinations:
Steel-Steel
This is a general purpose combination recommended where vibration is present. The seats are Integral and therefore are the most economically priced. This union will suit almost any application. Zinc coating improves the efficiency of the joints to a marked degree where corrosion is present.
Steel-Bronze
A good seat combination where corrosion due to the material used in the line or where condensation is present and when periodic disconnection is required. Zinc coating improves the efficiency of the joint
Bronze-Bronze
Should corrosion – due to material in the pipe line or condensation be a major factor, and where consistent disconnection is required, this seat combination is advised. Ideally suited to steam lines. Zinc coating improves the corrosion resistance of the seat area.
THREADING - Taper threads only
External (R) and internal (RC) series to AS 1722 Part 1.
Our Steel is procured from the most reputable mills around the world, to certify product quality and traceability.
We can source unique / non-standard product as well as meet large project requirements.
We are proficient at meeting tight lead times, preserving material integrity and offering competitive pricing.