ZMAW pneumatic film regulating butterfly valve

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