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          HTSW pneumatic bellows valve


          HTSW bellows seal single seat control valve is a top guide structure regulating valve, the valve has the advantages of compact structure, fluid channel was streamlined S, the pressure drop, flow is large, wide adjustable range. The valve cover with bellows seal structure, can completely eliminate the possibility of the process medium leakage from the stem clearance, which is one of the significant characteristics of bellows seal valves. As the bellows element itself can be anti ageing deformation and outstanding, this valve completely overcomes the packing seal valves are packing aging and sensitive temperature difference. Secondly, using the corrugated pipe -- packing a double seal structure, safety and reliability better, therefore, it is widely used in highly toxic, the automatic control system of strong corrosive, radioactive and other rare special medium. The spool oriented area, good vibration resistance, equipped with multi spring diaphragm actuator, which has the advantages of compact structure, large output force.

          The main technical parameters and performance
          Valve body
          Through single seat casting type ball 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 ℃
          Note: the working temperature must not exceed the allowable range of various materials
          The gland type bolt clamp
          Filler V PTFE, PTFE impregnated asbestos packing, asbestos braid packing.
          Valve components
          Spool type oriented single seat plunger type valve
          Flow characteristics of flow characteristics of high capacity, (see Figure 2) the percentage of properties such as (%) and the linear characteristic (L) high accuracy flow characteristics (see Figure 1)
          The percentage of properties such as (%) and the linear characteristic (L) division Chatterley surfacing quick opening valve (QS)
          Material 0Cr17Ni12Mo2 and division Chatterley alloy welding
          Bellows material 1Cr18Ni9

          Type HA multi spring diaphragm actuator
          Ethylene propylene rubber clip nylon membrane
          Spring range 0.02 ~ 0.10 of 0.08 ~ 0.24MPa
          The air pressure of 0.14 0.16 0.28 0.40MPa
          An air supply joint Rc 1/4
          Ambient temperature is -30 ~ +70 ℃
          Note: the valve also can be equipped with VA5 or VA6 actuators.

          Valve type gas -- gas -- open or closed
          Accessory positioner, hand wheel, pneumatic valve position transmitter etc..
          Metal seat: meet the standard ANSI B16.104 grade IV, 0.01% less than the rated Cv
          PTFE seat: meet the standard ANSI B 16.104 grade VI, less than the rated Cv10-7
          Division Chatterley surfacing metal seat: less than the rated Cv 10-7
          Back to the difference of 5% (not with a locator (locator) with 3%)
          Line of ± 11% (not with a locator) + 3% (band locator)
          Note: V PTFE using standard. The adjustable range of 50: 1Ordering instructions
          Type and name 1 products
          2 nominal diameter DN (mm
          3 of the nominal pressure
          4 flow characteristics
          5 material of valve body and valve parts
          6 medium type and temperature range
          7 valve before and after the pressure (differential pressure)
          The 8 seal
          9 accessories