Product working principle and use:
ZMAW pneumatic film regulating butterfly valve input control signal (4-20mADC or 1-5VDC) air source can control operation, especially suitable for large caliber, large flow, thick slurry or boiler kiln flue gas control. It is suitable for the adjustment of suspended particle fluid and thick and turbid-like slurry fluid. Clean media, can choose the valve plate and soft seal (rubber ring, PTFE ring) to reduce leakage (up to 0.01%), high temperature and high pressure conditions can choose the three-eccentric hard seal valve body.
Product structure features:
1, the valve has a simple and compact structure, convenient processing, easy to make large caliber, with self-cleaning effect, small resistance coefficient, large flow capacity.
2, with small size, light weight, rated flow coefficient and other advantages,
3, this series of products have standard type, high temperature type and sealed type three
4, when the pneumatic switch to manual, use the side loading handwheel mechanism method: pull out the positioning pin, pull the handle upward, the worm wheel and the worm mesh, press the positioning pin, rotate the handwheel can change the flow section. Manual switch to pneumatic, by the phase to pull the handle.
Product performance parameters:
Nominal diameter mm
50
80
100
125
150
200
250
300
350
400
450
500
600
seven hundred.
800
900
1000
Rated flow coefficient Kv
85
220
340
530
770
1360
2130
3060
4160
5450
6900
8500
12200
16600
21700
27540
34000
Nominal pressure MPa
0.6
Rated Angle
70
Signal pressure KPa
20 ~ 100
Flow characteristic
Approximate equal percentage
Medium temperature ℃
-20 ~ 200(room temperature); -40 ~ 450(medium temperature); -40 ~ 600(high temperature)
Nozzle flange
Press JB78-59 clamping flange connection
The signal is connected to the screw hole
M16 x 1.5
With an executive mechanism
Diaphragm type
ZMA-2
ZMA-3
ZMA-4
ZMA-5
Piston type
ZSC-45
Valve body material
ZG230-450; 1Cr18Ni9; ZG1Cr18Ni9Ti, ZGOCr18Ni12Mo2Ti
Accessories available
Hand wheel, positioner, air filter pressure reducer, etc.
Product main parts materials:
Valve body
HT200, ZG230-450, ZG1Cr18Ni9Ti
Valve plate
Carbon steel, 1Cr18Ni9Ti
macroaxis
1Cr18Ni9Ti
Valve seat
Carbon steel, stainless steel lined with synthetic rubber or reinforced teflon
Inner bearing
Bronze, stainless steel surfacing welding titanium alloy
stuffing
Polytetrafluoroethylene, flexible graphite
bonnet
Carbon steel
