Classification Basis and Restrictions on the Use of Stainless Steel Ball Valves

Stainless steel ball valves have O - type and V - type ball valves. O-type ball valve adopts a floating structure, the ball core is precision casting, the appearance of hard chrome plating, the seat adopts enhanced polytetrafluoroethylene material, the same caliber as the flow channel, great flow capacity, minimal flow resistance, no leakage when closed, generally used as an on-off valve, especially suitable for high viscosity, fiber, granular media; V-ball valve adopts fixed structure, the ball core is opened with V-shaped notch, can achieve proportional adjustment, flow characteristics for approximate percentage. Let's take a look at the classification basis and restrictions on the use of stainless steel ball valves.

Here is the content list:

• Stainless steel ball valves are classified according to what?

• Restrictions on the use of stainless steel ball valves.

Stainless steel ball valves are classified according to what?

Stainless steel ball valves can be selected according to different process equipment pneumatic or electric, respectively composed of a pneumatic ball valve and an electric ball valve, pneumatic ball valve such as to achieve proportional regulation must be equipped with a valve positioner, an electric ball valve such as to achieve proportional regulation must choose electronic electric actuator or with servo amplifier.

Stainless steel ball valves from the material, can be divided into carbon steel ball valves, stainless steel 304 ball valves,316 ball valves, and copper ball valves.

Stainless steel ball valves from the application, can be divided into high-pressure ball valves and low-pressure ball valves. The high-pressure ball valve is mainly used in oil, natural gas, hydraulic oil, construction machinery, and other industries. The low-pressure ball valve is mainly used in the medium for water and another non-corrosive pipe!

Restrictions on the use of stainless steel ball valves.

Temperature and pressure constraints

Stainless steel ball valves: The nameplate displays the maximum allowable operating pressure at maximum and minimum operating temperatures. Stainless steel ball valves and seals with PTFE or RTFE seats shall operate at temperatures between -290C and 2000C. The operating temperature of other types of seats and seals shall be checked by the KI factory. Nominal pressure rating (PN) for stainless steel ball valves indicating the maximum operating pressure of the valve at normal temperature. For example, PN4.0 indicates that the maximum working pressure is 40 Bar(4.0MPa) when the operating temperature is -290C ~ 380C.

Please refer to the corresponding instruction manual for the precautions of electric or pneumatic actuators.

1. Remove the protective cover on both sides of the flange end, and rinse and clean the valve when it is fully open.

2. Before installation, the whole machine should be tested according to the specified signal (electricity or gas) (to prevent vibration from affecting the performance due to transportation), and the line can be installed after qualification.

3. Before preparing to connect with the pipe, it is necessary to wash and clean the remaining impurities in the pipe, which may damage the seat and ball.

4. During installation, please do not use the actuator of stainless steel ball valves as the lifting point to avoid damage to the actuator and accessories.

5. stainless steel ball valves shall be installed in the horizontal or vertical direction of the pipe.

6. The pipe near the installation point shall not be low or bear external force. Pipe supports or supports can be used to eliminate the deviation of the pipeline.

7. After connecting with the pipe, please cross-lock the flange connection bolts with the specified torque.

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