Function: Four-way ball valve is also called multi-way water service rotary valve in power stations, and air reversing changeover valve in petrochemical system They are applicable for circulating system of liquid gas, dust, slurry and medium containing solid particles. For example, the forward and reverse circulating water supply system of unit cooler in power station. The conventional piping for forward and reverse circulating water supply has the defects of large occupation, high cost, complicated operation (to operate four valves for each changeover). Use of four-way ball valve instead of the conventional facilitate the control and improve its asynchronism. Structural features:
 1. Designed to meet the  process of forward and reverse water supply of coolers in electric power system, with suitable and dependable functions; 
 2. Top mounted fixed ball four-side seated valve core, with sound sealing performance, resistance to sand abrasion, and long service life; 
 3. Electric? and pneumatic operation (switched to hand operation if necessary); 

4. Facilitated control. Good information channel and operating interface between control cabinet and valve, and upper-level machine. lf requested, automatic switch over of forward and reverse water supply may be actualized by a certain interval.
Standard and regulation 1.Design and manufacture:GB/T12237-1989, ANSI B16.34 2.Inspection and test:GB/T9092, GB/13927-1992, API598 3.Flange connection dimension:GB/T9113, JB/79.1-2-1994, ASME/ANSI B16.5 4.Face-to-face-dimension:ALS-2006
Applicable working conditions
Applicable medium: Water, oil, gas and other causticity medium (Different raw material for different medium) Applicable temperature:-46~300 (Different raw material for different work temperature) Driving manner: Manual operated, Worm gear operated, Pneumatic operated, Electric operated Test pressure (MPa)
Nominal pressure PN   Maximum operatingpressure  Shell test pressure  Air seat test pressure  Seal test pressure
1.6  1.6  2.4  0.6  1.76
2.5  2.5  3.8  0.6  2.75
4.0  4.0  6.0  0.6  4.4
Main parts material
Part name   Material 
  GB  ASTM
Body, Cover   WCB, ZG1Cr18Ni9Ti  WCB, CF8, CF8M
Seal ring  PTFE, PPL  PTFE, PPL
Ball   2Cr13, 1Cr18Ni9Ti  420 304 316
Seat, Stem  2Cr13  A246-416
Stud  35CrMoA  A193-B7