ZMAT type pneumatic diaphragm regulating valveDetailed product description：

Overview

ZMAT Pneumatic Diaphragm Control Valve \ ZMBT Pneumatic Diaphragm Control Valve consists of a multi spring pneumatic diaphragm actuator and a diaphragm valve. The diaphragm valve body flows smoothly, the throttling element is an elastic diaphragm valve, and there is no packing box on the valve cover. Therefore, the flow capacity of the valve is larger than that of a general regulating valve and there is no leakage. It can be used as a shut-off valve within the allowable pressure difference range. The opening and closing of the air are achieved by positive and negative actuators. This valve is suitable for regulating high viscosity fluids, suspended particles, fiber media, toxic media, and corrosive media.

Installation and usage precautions
1. Pneumatic diaphragm valves should be installed vertically on pipelines, and those with large volume and weight, as well as those used in vibration situations, should be supported and clamped.  
2. Pneumatic diaphragm valves should generally be equipped with a bypass pipeline so that they can switch to bypass operation in case of diaphragm failure or maintenance, allowing the production process to proceed normally. In general, in unimportant situations, the bypass pipeline can be omitted after installing a handwheel mechanism for manual operation, and the valve opening can be limited. When the handwheel mechanism stops using, it should be restored to its original neutral position to facilitate the normal operation of the automatic control system.  

3. When cleaning the pipeline, the adjustment should be at the maximum opening to remove dirt from the pipeline.

4. If the valve body is lined with an anti-corrosion layer, a corrosion-resistant soft pad should be used when installed on the pipeline, and care should be taken not to damage the sealing surface of the valve body flange.  
5. Regular inspections should be conducted on the diaphragm and lining to prevent damage to other parts and accidents caused by corrosion and rupture  

Main technical performance indicators of ZMAT pneumatic diaphragm regulating valve

Nominal diameter mm

fifteen

twenty

twenty-five

forty

fifty

sixty-five

eighty

one hundred

one hundred and fifty

two hundred

Nominal pressure MPa

0.6 10

Travel distance mm

ten

sixteen

twenty-five

forty

sixty

flow characteristics

Approximate quick opening type

Medium temperature ℃

-15-200 (normal temperature type), -40 to+250, -40 to+450 (medium temperature type), -100 to+200 (low temperature type)

Flange type

The sealing surface of the flange shall be in accordance with JB77, with cast iron flanges being smooth and cast steel flanges being concave

Valve body material

PN (MPa)

0.6,1.6

WCB(ZG230-450) CF3CF8 CF8M

4.0,6.4

WCB(ZG230-450)、ZG1Cr18Ni9Ti、ZG0Cr18Ni12Mo2Ti CF8 CF8M

Adjustable ratio R

30:1

Air source connector

M16×1.5

Nominal diameter (mm)	Equipped with actuator number	Main technical parameters
		Effective area of thin film (cm2)	Travel distance (mm)	Rated flow coefficient Kv value
fifteen	ZMA(B)-2	two hundred and eighty	ten	eight
twenty				twelve
twenty-five				sixteen
thirty-two	ZMA(B)-3	four hundred	sixteen	twenty-eight
forty				sixty
fifty			twenty-five	sixty-eight
sixty-five	ZMA(B)-4	six hundred and thirty		ninety
eighty			forty	one hundred and sixty
one hundred				three hundred

performance

project	technical indicators
	Without locator	Equipped with locator
Basic error%	±10	±1.5
Return difference%	eight	one point five
Dead zone%	six	zero point six
Allowable leakage amount	The lining material is polytetrafluoroethylene diaphragm material For: chloroprene rubber, fluororubber	10-4 times the rated capacity of the valve
	The unlined material is, and the diaphragm material is chlorine Nitrile rubber, fluororubber	5 × 10-6 × rated capacity of valve
Can be equipped with accessories	Electric locator or electric/pneumatic converter, air filter, pressure reducer, solenoid valve, handwheel mechanism, etc
Deviation of rated flow coefficient Kv%	±20

Combination of valve body lining and diaphragm material Valve body material Lining material diaphragm material Operating temperature Suitable occasions Cast iron HT200 nothing neoprene 0～65℃ Non corrosive media, water and abrasives, mud media Cast iron HT200 Polytrifluorochloroethylene fluororubber -15～150℃ Strong acids, strong alkalis, strong oxidants, and general organic solvents are not suitable for mud media Cast stainless steel ZG1Cr18Niti nothing fluororubber -20～200℃ Common media such as acid, alkali, organic solvents, etc 4. Allow pressure difference

Nominal diameter DN (mm)

fifteen

twenty

twenty-five

thirty-two

forty

fifty

sixty-five

eighty

one hundred

Rated flow coefficient Kv

eight

twelve

sixteen

twenty-eight

sixty

sixty-seven

ninety

one hundred and sixty

three hundred

Nominal pressure (MPa)

one

Equipped with actuator model

ZMA(B)-2

ZMA(B)-3

ZMA(B)-4

when closed Allow the most high pressure MPa

letter number press force MPa

P2=0

one hundred and twenty

zero point nine

zero point nine

zero point four zero

zero point four zero

zero point three zero

zero point two

zero point two

zero point one

zero point zero five

one hundred and forty

one

one

zero point eight zero

zero point eight zero

zero point six zero

zero point four

zero point four

zero point two

zero point one zero

P1=P2

one hundred and twenty

zero point four five

zero point four five

zero point two zero

zero point two zero

zero point one five

zero point one

zero point one

zero point zero five

zero point zero two

one hundred and forty

zero point nine

zero point nine

zero point four zero

zero point four zero

zero point three zero

zero point two

zero point two

zero point one

zero point zero five

ZMAT type pneumatic diaphragm regulating valve with external dimensions

Nominal Diameter DN(mm)	Exterior installation dimensions
	A	H		H1	L
		ZMAT type	ZMBT type
fifteen	two hundred and eighty	four hundred and seventy-nine	five hundred and thirty-two	forty-seven point five	one hundred and forty
twenty		four hundred and seventy-nine	five hundred and thirty-two	fifty-two point five	one hundred and forty-five
twenty-five		four hundred and seventy-nine	five hundred and thirty-two	fifty-seven point five	one hundred and fifty-five
thirty-two	three hundred and twenty-five	five hundred and thirty-eight	six hundred and seventeen	sixty-seven point five	one hundred and sixty-five
forty		five hundred and fifty-three	six hundred and thirty-two	seventy-two point five	one hundred and ninety
fifty		five hundred and sixty-two	six hundred and forty-one	eighty	two hundred and ten
sixty-five	four hundred and ten	seven hundred and fifty-four	eight hundred and fifty-five	ninety	two hundred and forty
eighty		100%	eight hundred and seventy-six	ninety-seven point five	two hundred and seventy
one hundred		eight hundred and fifty-seven	nine hundred and fifty-eight	one hundred and seven point five	three hundred and thirty-five

Note: The flange is selected according to JB78-59 "Cast Iron Flanges" standard