Naval OY Hot-Tapping

At Seng Choon, we are proud to be able to deliver to you quality hot tapping service and products from Naval Oy of Finland - the world's largest manufacturer of welded ball valves and supplier of reliable ball valves for over 25 years.

Hot Tapping allows access to the inside of an operating pipeline without shutdown or spillage - thereby allowing our customers to save energy, time and money. In addition, the hot tapping process is safe, simple and easy. Applications include attachment of a branch connection to the line, installation of an internal probe or monitor, and to stop or redirect flow in a line for maintenance or repair purposes.

From the customer's point of view, the most imprtant characteristic of Naval Ball Valves is their operating reliability and freedom from maintenance. The structure of Naval ball valves is designed so that the force created by the pressure in the piping keeps the valve tightly sealed both internally and externally. The stem is blow-out proof, and due to the construction of its sealing surfaces, sealing actually increases under pressure.

Naval's tapping machines perform hot taps to help solve maintenance for pressures up to 362.5 psi (25 bar) and at temperatures -30°C to 200°C. The equipment is type tested in Germany by TüV (Certificate "TüV.AR.303-99" D1 D2).

Step 1 - Preparation Valve welded on main pipe	Step 2 - Work in progress Drilling on the main pipe	Step 3 - Completion Retaining of the coupon after completing drilling