PRODUCT HIGHLIGHT - Top Entry Rising Stem Ball Valve OR-B150 Series

Overview

The APV rising stem trunnion-mounted ball valve design provides accurate friction-free operation. The valve set sealing feature provides a bubble-tight shut-off against liquids and gases. There is no pinch point effect to wire draw seats or core face. The valve is designed to be inherently fire-safe and incorporates an anti-blowout stem feature. The OR-B150 valve suits petrochemical industries, liquified petroleum gas storage, refineries, natural gas, compressor systems, oil and gas transportation pipelines, and light industries.

Features

1. Stem packing design reduces emission through the bonnet. Packing is injectable while the valve is in-line.
2. In-line repairable. Top entry design provides easy repair after shutting off the flow.
3. Springs, which will weaken with use, are not required for sealing.
4. A mechanically energised tight seal is non-lubricated, and differential pressure is not required for sealing. The single-seat design also means there is no need for thermal relief.
5. Perpendicular movement of the ball away from the seat allows immediate full flow, preventing uneven erosion or abrasion of the seat or ball. It also provides low torque.
6. Firesafe combination of metal and soft seat.
7. There is no cavity to trap the product.
8. Wedge-type sealing tapers at the bottom of the stem and provides a mechanically energised and adjustable dead-tight seal at all pressure ranges. Wear-resistant hard ball provides long life.

Special services easily accommodated, i.e. high temperature, H2S service, low temperature, etc.

Top Entry Structure

The OR-B150 valve design is top entry and trunnion mounted. The most distinctive difference between this kind of valve and others is that the inline maintenance function can be performed without removing the valve from the pipeline.

Structure

The body is integral, ensuring strength and rigidity. The valve trims have been carefully designed and selected to ensure reliability under various service conditions. The wall thickness and the connection bolts are high strength and can endure pipeline stress.

Lower Torque

The stem structure is specially designed, and there is no friction between seat ball sealing faces. Therefore, the stem can turn easily with low opening and closing torque.

Opening of OR-B150 Ball Valve

When it is in the closed position, the ball is closely pressed onto the seat under mechanical pressure from the stem. When the hand wheel is turned counter clock-wise, the stem will move upward, and the angular plane at the bottom stem will make the ball sealing face leave the seat. The stem will continue rising and interact with the guide pin in the stem spiral groove to make the ball turn 90o without friction until the stem rises to the ultimate position and the ball bore is aligned with the valve channel.

Closing of OR-B150 Ball Valve

During closing, turn the hand wheel clockwise, the stem will move downward and make the ball start rotating. Continue turning the hand wheel, and the stem will make the stem and ball turn 90o together under the action of a guide pin in the spiral groove embedded in the stem. When it is nearly closed, the ball has turned 90o without contact with the seat. The stem will continue moving downward, the ball pushes onto press the seat so as to make the sealing face in the seat produce elastic deformation and closely fit the ball sealing face, and therefore, ensuring safe and reliable zero leakage without the normal turning action that damages traditional ball valve seats.

Fast Track Valve Manufacturer

Australian Pipeline Valve provides this technical information to assist the valve community. Please share and refer us to any specifiers or purchasers of valves/actuators within your network. Specialising in short runs and supplying high specification valves. View and bookmark our catalogues. Join the APV Group. Follow our APV company page for frequent updates.