ZSQ-402/403R Pneumatic Shut-off Valve
ZSQ-402/403R is a pneumatic two-position shut-off valve series comprising a piston actuator and shut-off valve. The catalog describes signal-controlled opening or isolation of the pipeline medium and provides two-way, three-way and soft-seal codes.
Product features
A piston-type pneumatic actuator is combined with the shut-off valve. Without a signal, spring preload closes the valve; with a signal, the piston drives the stem. The catalog lists two-way, three-way and soft-seal construction codes. The catalog states compliance with HG/T3236-1989.
Operating data
| Item | Value |
|---|---|
| Model | ZSQ-402/403R |
| Nominal diameter | 15–50 mm |
| Nominal pressure | 4.0 MPa |
| Signal pressure | 0.35 MPa |
| Operating temperature | -20–280°C |
| Media | Nitrogen, steam, liquids, oil |
| Standard | HG/T3236-1989 |
Model coding
| Code | Meaning |
|---|---|
| Z | Pneumatic actuator category |
| S | Piston actuator |
| Q | Shut-off valve series |
| 40 | Nominal-pressure code |
| 2 / 3 | 二通 / 三通 / Two-way / Three-way / สองทาง / สามทาง |
| R | Soft seal |
| Suffix | Nominal diameter |
Applications
For signal-controlled opening or isolation of water, steam and other pipeline media in industrial process control. The catalog also lists nitrogen, liquids and oil and explicitly mentions nitrogen vulcanization.