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ZHA/B Type Pneumatic Diaphragm Actuator

ZHA/B Type Pneumatic Diaphragm Actuator change ourput pressure of pneumatic adjustment gauge into push rod displacement change.It can connect straight trip control valve to change control system output signal into disk corresponding position to realize to control control valve open degree. It has force uniform, good stability, large output push, small size, light weight and other advantages.

ZHA/B type multi-spring pneumatic diaphragm actuator change ourput pressure of pneumatic adjustment gauge into push rod displacement change.It can connect straight trip control valve to change control system output signal into disk corresponding position to realize to control control valve open degree. It has force uniform, good stability, large output push, small size, light weight and other advantages.

Pneumatic Diaphragm Actuator Action type

  • ZHA type: direct action, pneumatic close. When air pressure increase, stem part would move down
  • ZHB type: re-action, When air pressure incease, stem part would more up

Performance and selected parameter

Type ZHA/B-11 ZHA/B-22 ZHA/B-23 ZHA/B-34 ZHA/B-45 ZHA/B-56
Travel(mm) 10 10、16 16、25 40 40、60 100
Effective area(cm) 200 350 350 560 960 1600
Air interface size M10×1 M12×1.25 M16×1.5
Air supply pressure 0.14、0.25MPa
Working temperature -30~60ºC
Spring scope 0.02~0.10、0.04~0.10、0.08~0.24MPa
Hystersis With positioner : 1%, without positioner : 3%
Linearity With positioner : 1%  Without positioner : ±5%

Model Establishment

ZH Action type Size specification Spring scope (KPa) Handwheel structure
ZH series actuator A: Direct action
B:Re-action
11
22
23
34
45
56
20-100
40-200
80-240
Without : Without handwheel
D:top entry handwheel
C: Side entry handwheel

The following is our product catalogue, company profile, qualification certificates and other related documents

Our Clients

Our Clients