Q81F three-piece clamp ball valve, clamp ball valve

Q81F three-piece clamp ball valve belongs to manual ball valve. Ball valve is a ball with a circular channel as the opening and closing parts, the ball rotates with the valve stem to achieve the opening and closing action of the valve. The opening and closing part of the ball valve is a sphere with holes, rotating around the axis perpendicular to the channel, so as to achieve the purpose of opening and closing the channel. This valve is suitable for urban construction, chemical industry, metallurgy, petroleum, pharmaceutical, food, beverage, environmental protection.

This valve is suitable for urban construction, chemical industry, metallurgy, petroleum, pharmaceutical, food, beverage, environmental protection.

Packing of Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’  is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

How it works:

Opening procedure

In the closed position, the ball is pressed against the seat by mechanical pressure from the stem.

When the handwheel is turned counterclockwise, the stem moves in the opposite direction, and its bottom angular plane releases the ball from the seat.

The stem continues to lift and interacts with the guide pin in the spiral groove of the stem so that the ball begins to rotate without friction.

Until the full open position is reached, the stem is raised to the limit position and the ball is rotated to the full open position.

Closing procedure

When closed, turn the handwheel clockwise, the stem begins to drop and the ball begins to rotate away from the seat.

Continue to rotate the handwheel, the valve stem is subjected to the action of the guide pin embedded in its upper spiral groove, so that the valve stem and the ball rotate 90° at the same time.

When close, the ball has rotated 90° without contact with the seat.

For the last few turns of the handwheel, the angular plane at the bottom of the stem mechanically wedges towards the compression ball, pressing it tightly against the seat to achieve a complete seal.