Bellows seal single-seat Penumatic regulating valve

Pneumatic control valve is with compressed air as power source, with cylinder as actuator, and with the aid of electric pneumatic valve positioner, converters, such as high temperature control valve, a valve attachment to drive pneumatic control valve, realize the switch quantity or proportion type adjustment, industrial automation control system receives the control signal to complete regulating the flow of pipeline medium, pressure, temperature and other process parameters. Pneumatic control valve is to control the characteristics of simple, quick response, and intrinsically safe, do not need another explosion protection measures. Pneumatic control valve used in all kinds of industrial equipment, we in many places with platforms are a lot of pneumatic control valve, it can be seen on the advantages of the pneumatic control valve, control effect not only, and fast response speed

Body structure is compact, the fluid channel in an s-shaped streamlined, small pressure drop loss, large flow, adjustable range. HTSW bellows seal single-seat regulating valve bonnet on adopting bellows seal structure, can eliminate process medium movement clearance from the stem to the possibility of a leak, it is one of the significant characteristics of bellows seal valve. Because of the corrugated pipe deformation element itself and its aging resistance, regulator completely overcome the packing seal valve usually packing aging and temperature sensitive weaknesses. Secondly, using the corrugated tube - packing double sealing structure, better safety and reliability. Therefore, HTSW bellows seal single-seat regulating valve in poisonous, corrosive, radioactive and other special medium rare is widely used in automatic control system.

Valve core area is large, good vibration resistance, with many spring loaded diaphragm actuator, its compact structure, big output force.

 Parameters of the valve

Nominal diameter 40 ~ 200mm
Nominal pressure ANSI 150, 300, 600
JIS 10, 20, 30, 1.6, 4, 6.4MPa 40K PN
Allowable working pressure 1MPa, 2 MPa, 3.5 MPa
Connection flange type: RF and RJ
According to standard of JIS B2201 ANSI B16.5 JB/T79.1
PN 1.6MPa RF JB/T79.2 concave convex surface
Welding type: weld SW (40 ~ 50mm) butt welding of BW (65 ~ 200mm)
The material HT200 ZG25 ZG1Cr18Ni9
ZG0Cr17Ni12Mo2 1.25Cr0.5Mo
5.0Cr0.5Mo or SCPH21 SCPH61 Ti
The valve cover Chang Wenxing (P): -17 ~ +230 ℃
Elongation type Ⅰ (E1): +230 ~ +350 ℃, -45 ℃ to -17 ℃