How to select the specification of the hottest pne

2022-08-19
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How should the specifications of pneumatic ball valve be selected?

the exact situation is different. Pneumatic ball valve is equipped with pneumatic actuator. The execution speed of pneumatic actuator is relatively fast, and the fastest switching speed is 0.05 seconds/time, so it is usually also called pneumatic quick cut-off ball valve. Pneumatic ball valves are usually equipped with various accessories, such as solenoid valves, air source processing triplets, limit switches, positioners, control boxes, etc., to achieve local control and remote centralized control. The switch of the valve can be controlled in the control room without running to the site or high altitude and dangerous areas for manual control, which saves human resources, time and safety to a great extent. Let's have a look at the selection of pneumatic ball valves

the aspects needing attention in the selection of pneumatic ball valve are:

1. The working principle of pneumatic ball valve is to make the valve unblocked or blocked by rotating the valve core. The ball valve has the advantages of light switch, small volume, large diameter, reliable sealing, simple structure and convenient maintenance. The sealing surface and spherical surface are often closed, which is not easy to be eroded by the medium, and is widely used in various industries

2. Pneumatic ball valve is mainly used to cut off, distribute and change the flow direction of medium in the pipeline

3. Pneumatic ball valve is a relatively new type of ball valve. It has some unique advantages of its own structure, such as no friction on the switch, loose friction if found, uneasy wear on the seal, and small opening and closing torque. This will reduce the size of the actuator. Equipped with multi turn electric actuator, the medium can be adjusted and cut off tightly

model representation method of pneumatic ball valve:

additional code of ball valve: V indicates that the valve core has a V-shaped structure, D indicates low temperature, B indicates thermal insulation, P indicates eccentric structure, u, s and Dy mostly indicate top mounted type

ball valve name code: Q refers to ball valve

ball valve drive Code: 6 indicates pneumatic

connection mode code: 1 refers to internal thread, 4 refers to flange type, 6 refers to welding, and 7 refers to the model requirements of clip type selection electronic universal testing machine

structure type code:

floating type the other is hardener: 1 refers to straight flow channel, 2 refers to Y-type tee, 4 refers to L-type tee, and 5 refers to T-type tee

fixed type: 0 refers to hemispherical straight through, 6 refers to four-way flow channel, 7 refers to straight through flow to, 8 refers to L-shaped tee, and 9 refers to Y-shaped tee

seal material code: B Babbitt alloy, f fluororubber, F46 fluorine lining, H stainless steel, J rubber lining, m Monel alloy, n nylon plastic, Monel P, y cemented carbide, w valve body direct processing

pressure grade code: 16 means the pressure is 16 kg (1.6Mpa), up to 64mpa; 150Lb refers to American Standard pound pressure, and the maximum pressure resistance grade can reach 2500lb

material code of valve body: a titanium and titanium alloy, C carbon steel, I chromium molybdenum steel, P-Series stainless steel, R-Series stainless steel, s plastic

model description of pneumatic ball valve:

q645f-16p stainless steel pneumatic flange tee T-shaped ball valve

1, Q: refers to ball valve

2, 6: indicates that the transmission mode is pneumatic

3, 4: flange connection

4, 5: the structural form is floating T-type tee

5, F: the sealing auxiliary material is fluororubber

6, 16: indicates that the nominal pressure is 1.6Mpa

7, P: indicates that the valve body is made of stainless steel

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