Since 1945 Parker Autoclave Engineers has designed and built premium quality valves, fittings and tubing. Parker Autoclave Engineers ball valve actuators can be supplied with a variety of features and options. Operators are supplied either pneumatic or electric actuated.
FEATURES
Use for remote and automatic operation.

Air-to-open/spring-to-close and air to open and close.

Limit switches or limit switches with visual indicators available.

High temperature options.

Stainless steel housings for corrosive applications.

Manual ove ....etc

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research paper on ball piston engine pdf

Abstract:

A patented new power machine concept has been designed and analyzed for production, and proof of principle subscale tests have been performed, with positive results. The machine design concept is applicable as a compressor, pump, motor, or engine. Simplicity of design based on spherical ball pistons ( Figures 1 and 2 ) enables a low moving part count, high power to weight ratio, elimination of valve train and water cooling systems, and perfect dynamic balance.The new design concept utilizes n ....etc

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It is most likely to be electronic in E-ball. The E-Ball is a sphere-shaped computer concept that is the smallest design among all laptops and desks ever made. This PC concept has all the traditional elements like mouse, keyboard, large screen, DVD recorder, etc., all in an innovative way. E-Ball is designed to be placed on two supports, it opens by simultaneously pressing and holding the two buttons on each side. After opening the stand and turning on the PC, pressing the mouse button to disconn ....etc

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INTRODUCTION
Ball valves are most widely used valves for flow control in fluid flow lines for wide range of temperature changes (-200 C to 500 C).Most of the outlet valves of chemical plant storage were installed with ball valves for sudden closing and opening purposes. For petroleum and chemical plants it is very convenient to operate with ball valves.
Ball valves are used in situations where tight shut-off is required. The type of seat can vary with the valve pressure rating and materials of constr ....etc

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