Control Valve Product Classification

 Classified according to purpose and role of

     a. two valves: mainly used for close or connected to medium;

     b. Control Valve: mainly used for conditioning. Selection valve, the need to determine the flow control valve characteristics;

     c. shunt valve: used to allocate or mixed media;

     d. shut-off valve: usually refers to the valve leak rate of less than one hundred thousandth.

     Classification by main parameters

     Classified according to a pressure

     (1) Vacuum valves: the pressure is below standard atmospheric pressure;

     (2) low pressure valves: Nominal pressure PN ≤ 1.6MPa;

     (3) medium-pressure valve: PN2.5 ~ 6.4MPa;

     (4) high-pressure valves: PNl0.0 ~ 80.OMPa, usually PN22, PN32;

     (5) ultra-high pressure valves: PN ≥ IOOMPa.

     Two categories according to medium temperature

     (1) high temperature valve: t> 450 ℃;

     (2) Temperature Valve: 220 ℃ ≤ t ≤ 450 ℃;

     (3) at room temperature valve: -40 ℃ ≤ t ≤ 220 ℃;

     (4) low-temperature valve: -200 ℃ ≤ t ≤ -40 ℃.

     Classification by common habits

     This classification method is not only according to principles, the role of another division according to the structure, is currently the most commonly used classification method at home and abroad. Generally divided into nine broad categories:

     (1) The single-seat control valve;

     (2) two-seater regulating valve;

     (3) sleeve valve;

     (4) The angular control valve;

     (5) The three-way valves;

     (6) diaphragm valves;

     (7) butterfly valve;

     (8) valves;

     (9) eccentric rotary valve. 6 straight trip to the former, the latter three kinds of angle stroke.

     These nine products are also the most basic products, also known as generic product, the base-type products or standard products. A wide range of special products, special products are, in this based on nine categories of products, improved variant out.

     By major special use to (when it is a special, special valves)

     (1) soft sealing shut-off valves;

     (2) hard seal shut-off valves;

     (3) wear control valve;

     (4) The corrosion control valve;

     (5) Full PTFE Corrosion Control Valve

     (6) All corrosion resistant alloy valve;

     (7) Emergency action to cut off or venting valve;

     (8), prevent the control valve;

     (9) corrosion, prevent the shut-off valves;

     (10) insulation jacket valve;

     (11) Large pressure drop shut-off valves;

     (12) Small flow control valve;

     (13) large-diameter valve;

     (14) Large adjustable ratio control valve;

     (15) Low-S energy regulator valve;

     (16) low-noise valve;

     (17) refined a small regulating valve;

     (18) lining (rubber, PTFE, ceramics) regulating valve;

     (19) Water Treatment special valves;

     (20) caustic soda special valve;

     (21) AP exclusive valve;

     (22) chlorine gas regulating valve;

     (23) bellows sealed valve;

     Driven by the energy sub -

     (1) pneumatic valve;

     (2) electric control valve;

     (3) The hydraulic control valve. ball valve Trunnion Mounted Ball Valve Floating Ball Valve Top Entry Ball Valve Three way ball valve V Type Ball Valve
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