Control valve CATEGORIES
pneumatic diaphragm actuator
Product Categories: pneumatic actuator
♦ Mode of action:
Direct action: ZTHA
Reaction:ZTHB
Note:1.. Direct action actuator: the pressure of diaphragm air chamber increases, push rod of actuator moves downward.
2.Reverse action actuator: the pressure of diaphragm air chamber increases, push rod of actuator moves upward.
Product Description
Spring Pneumatic Diaphragm Actuator
♦ Materials of main components:
1. Upper and lower diaphragm cover: steel plate
2. Diaphragm: nitrile butadiene rubber nylon fabric
3. Pressure spring: 60Si2Mn
4. Bracket Material: HT200, ZG250
5. Sealing ring of shaft: polyurethane ( for reaction)
6. Push shaft: 2Cr13
♦ Main performance parameters:
Basic error: ≤±1%;≤±4%
Return difference: ≤1%;≤2.5%
Dead zone: ≤0.8%;≤2.5%
Rated travel deviation:≤+2.5%;≤+4%
Start and end point deviation: ≤±2.5%;≤±4%
Compression strength of diaphragm: 20~24Mpa
Life span: no less than 300 thousand times
♦ Specifications Table:
| Type | BZHA/b-11 | BZHA/b-22 | BZHA/b-23 | BZHA/b-34 | BZHA/b-45 | BZHA/b-56 |
| Stroke mm | 10 | 10,16 | 16,25 | 40 | 40,60 | 100 |
| Effective area cm2 | 200 | 350 | 350 | 560 | 960 | 1600 |
| Air supply connection | M10x1 | M12x1.25 | M16x1.5 | |||
| Air supply pressure | 0.14Mpa, 0.25Mpa | |||||
| Environment temperature | -30°C~+70°C | |||||
| Spring pressure range | 0.02~0.1,0.04~0.1,0.08~0.24 | |||||
| Optional Accessories | Positioner, air filtration pressure reducer, trip switch, solenoid valve, the handwheel institutions,etc | |||||
