Overview of electric bellows control valve:
ZD (R) SBWG electric bellows seal valve consists of 3810 series (PSL Series) electronic type electric actuator and low flow resistance valve, electric actuator for the integrated structure, a servo amplifier, the input control signal (4-20mADC or 1-5VDC) and the power to control the valve, to adjust to working parameters of pressure and flow, liquid level, temperature etc.. Electric bellows seal spool valve with guide structure, compact structure, with a S flow streamline, the pressure drop is small, large flow rate, wide adjustable range, the flow characteristics of high precision, conforms to the IEC534-1-1976 standard. The valve cover is made of corrugated pipe sealing structure, which is suitable for the adjustment of medium quality, flammable, explosive, volatile and rare precious metal. In addition, the valve can also be used in vacuum.
Main technical parameters:
| type of body |
Straight through casting ball valve |
| Nominal diameter |
DN25 ～ 300mm |
| Nominal pressure |
PN1.6 、 2.5 、 4.0 、 6.4MPa |
| Flange standard |
GB/T9113 、 JB/T79 |
| Connection form |
flange（FF RF RTJ） 、welding（SW BW） 、Thread (1) |
| Valve cover type |
Bellows seal type -40 ～ + 350℃ |
| Gland type |
Bolt type |
| Seal packing |
V PTFE packing, PTFE impregnated asbestos packing, asbestos textile packing, graphite packing |
|
