Ruike welded ball valves are widely used in heating lines, municipal construction, city gas and other industrial pipelines, its main function is to cut off or connect the pipeline in the fluid channel, its opening and closing parts around the vertical center line of the valve body for the rotary 90 ° movement, clockwise closed, counterclockwise open, the valve open and close quickly and flexibly, the ball valve is relatively small in size, light in weight, simple in structure, easy to install and maintain. The ball valve is relatively small, light weight, simple structure, easy to install and maintain.
Ruike company welded ball valves do not have the function of regulating the flow of pipeline, prohibited as a control valve. The flow characteristics of the ball valve in the valve open, close the stage for the linear characteristics, in the middle of the opening degree of time for the equal percentage characteristics.
Welded ball valves from the structural form of floating ball valves and fixed ball valves, are my company's mature products, according to the technical specifications of the response to the requirements of the company's valve design, manufacturing experience, after many years of customer use, proved Ruike company welded ball valve product performance is reliable.
Floating ball structure: floating ball valve ball in the valve body is floating, under the pressure of the fluid medium, the ball is tightly pressed to the outlet end of the sealing seat, forming a valve seal, this structure of the ball valve is characterized by a simple structure, good sealing performance.
Fixed ball structure: the fixed structure of the ball with upper and lower rotary axis, the lower part of the ball inlaid bearings, fixed by the lower stem, the upper part of the stem and the upper stem is connected, the ball can only be rotated along the axis of the valve channel vertical movement, not like floating ball valves as the ball can be moved to the side, so the fixed ball valves work, the pressure of the fluid in front of the valve and the spring force to push the valve seat tightly pressed to the ball, to form a reliable prevalent valve sealing! Fixed ball valves have DBB function, that is, the valve can simultaneously cut off the pipeline upstream and downstream of the media, the valve sealing is safe and reliable.

Product Characteristics

• Small flow resistance coefficient
Ball valves in the nominal flow of pressure loss is the smallest of all valves, equivalent to the same length of the pipe flow resistance coefficient, almost zero; my company's reduction of ball valves after fluid analysis and theoretical calculations, the flow path design to maximize the valve's ability to improve the circulation, reduce the reduction of the part of the resulting flow resistance.

• Bidirectional seal
Ball valve is not affected by the direction of the fluid medium, any end of the valve can be used as the upstream end, fixed ball valve can simultaneously cut off the fluid medium from upstream and downstream.

• Good sealing performance
Double-seat bidirectional sealing, seat seal for VITONB + non-metallic polymers for different pressure levels + hard seal composition, to ensure that the ball valve in different pressure differential can be achieved bubble level sealing (both zero leakage), sealing is safe and reliable.

• Long service life
The sealing surface of non-metallic material has good lubricity, and ball friction and wear is small, the structure of multi-stage sealing, coupled with the role of the spring preload, so that the sealing is safe and reliable, thus improving the service life of the ball valve.

Product Installation

1, the pipeline connected with the valve should be cleaned to avoid iron filings, mud, welding slag and other debris to damage the valve sealing surface.
2, this series of ball valves can be installed in any position, any end of the valve can be used as the upstream end, the valve can be installed horizontally and vertically, but the valve is prohibited from being installed upside down to prevent stem corrosion;.
3, the installation of the valve should be kept in the fully open position (factory has been adjusted in place), otherwise it may lead to damage to the valve; Warning: Do not place the valve in a half-open and half-closed state.
4, the center of the valve and piping center and pipeline consistent before welding installation.
5, welding connection should be in accordance with the welding process evaluation qualified welding process construction, installation welding to prevent welding slag, welding beans into the valve cavity, damage to the sealing surface. Installation of the valve should be in the fully open position, otherwise it may lead to damage to the valve. WARNING:For butt-welding connection end ball valves, please do not install the valve in the closed position. If the valve must be kept in the closed position, grease the exposed ball surface, which will protect the ball from being damaged by spattered weld slag.
6, in the preheating, welding, thermal stress relief, 75mm away from the weld outside of any point on the valve body temperature can not exceed 200 ° ° C, please use a thermometer to check the temperature.
7, the valve installation process should ensure that the valve body cavity clean, to prevent debris from entering the body cavity.
8, the welding end of the valve installation should be visually inspected after welding or non-destructive examination to confirm that no cracks, weld tumor, biting edge and other harmful defects, should be required to carry out non-destructive flaw detection of the weld:.
9, there is a drive device valve, electrical, pneumatic, hydraulic piping should be connected according to the instructions wiring diagram or piping diagram, before connecting to confirm the correctness of the line; valves factory open and close position has been adjusted in place, do not have to re-adjust.
10, buried pipeline valve actuators can not be immersed in water or mud, so as to avoid damage to the actuator.
Tip: When the valve is unavoidably immersed in water or mud for a long time, the customer should inform the manufacturer in advance, so that the manufacturer to come up with countermeasures in advance.
11, large diameter welded ball valve installation, the weight of the valve can not all act on the pipeline, should set up a fixed pier or bracket for support.
12, there are external insulation requirements of the valve should be passed into the medium before the completion of the construction of the protective layer.

Design parameters
Design and manufacture:GB/T12237, GB/T37827, GB/T12224, ASME B16.34
Inspection and testing: GB/T13927, JB/T9092, ISO 5208
Fire test: GB/T26479, API 6FA, API 607
Pressure level: 8Mpapa.
Diameter range: DN1600mm.
Applicable medium: water, gas, oil, etc.; and
Applicable temperature:-29℃~200°C.

Material details of major components

FAULTS AND TROUBLESHOOTING