Chemical Ball Valve
Know more about the Chemical Ball Valve
Ball valve is a form of quarter-turn valve which uses a hollow, perforated and pivoting ball (called a "floating ball") to control flow through it. It is open when the ball's hole is in line with the flow and closed when it is pivoted 90-degrees by the valve handle. The handle lies flat in alignment with the flow when open, and is perpendicular to it when closed, making for easy visual confirmation of the valve's status.
Ball valves are durable, performing well after many cycles, and reliable, closing securely even after long periods of disuse. These qualities make them an excellent choice for shutoff applications, where they are often preferred to gate and globe valves, but they lack their fine control in throttling applications.
Data and description of ball valve
|Item||Data and description|
|Rated flow coefficient||20||38||72||110||170||215||380||550||890||1400||2000||3580||5650||8100|
|Action range||0-90 degree|
|Air supply pressure||0.4-0.7 Mpa|
|Allowable pressure difference||below nominal pressure|
|Nominal pressure||1.6, 2.4, 4.0, 6.4 Mpa, ANSI 150LB, 300LB|
|Valve body material||WCB, 304, 316, 304L, 316L|
|Filler||PTFE V-filler, PTFE carbon fiber, PTFE asbestos, flexiable graphite|
|Valve seat sealing type||Metal carbide seal: -29 ~ 425 degree|
|Soft sealing: PTFE: -20 ~175 degree, PPL:-40~280 degree, Nylon:-40~80 degree|
|Valve core shape||Concentric full spherical type|
|Valve core form||floating ball type|
|Flow characteristic||quick open|
|Action form||Air open type, air close type, electric open type, electric close type|
|Pneumatic actuator||Double acting, spring return|
|Optional pneumatic actuator||AT/GT pneumatic actuator, DRG scotch Yoke pneumatic actuator|
|Accessories||electrical solenoid positioner, solenoid valve, limit switch, lock valve, air filter pressure reducing valve|
|Connection type||Flange, thread, welding|
Properties of the ball valve:
Advanced hardening technologies have been adopted in producing ball and seat, such as Ultron-sonic spray coating, nick base spray welding, surface specially hardening, stellite spray welding and so on. The application temperature may up to 540ºC, the maximum is 980ºC. The surface material also possesses good resistance properties of friction and impact.
1. Valve stuck prevented under high temperatures.
2. Excellent tightness functions.
3. An entire fire-safe structure.
4. Natural anti-static structure
6. Double block and bleed function
The Casting Technology for fully weld ball valve
It is special used for the media within sticky, with particle and fiber charactiscs. Ball valve is widely used in the control system of the industries, such as petroleum, chemical, light industry, high pressure equipment, pharmaceutical, paper making, etc.