ZMAW pneumatic diaphragm regulating butterfly valveDetailed product description：

Product Overview

ZMAW pneumatic diaphragm regulating butterfly valve, ZSRW, ZSCW pneumatic piston regulating butterfly valve can be controlled by inputting control signals (4-20mADC or 1-5VDC) air source to operate. The structure is simple and compact, easy to process, easy to make into large diameter, self-cleaning function, low resistance coefficient, and high flow capacity. Suitable for regulating fluids with suspended particles and concentrated or turbid slurry fluids. For clean media, valve plates with soft seals (rubber rings, PTFE rings) can be used to reduce leakage (up to 0.01%). For high temperature and high pressure conditions, a three eccentric hard seal valve body can be used. Please indicate it when placing an order.

Main technical parameters of pneumatic butterfly valve regulating mechanism

Nominal diameter mm

fifty

eighty

one hundred

one hundred and twenty-five

one hundred and fifty

two hundred

two hundred and fifty

three hundred

three hundred and fifty

four hundred

four hundred and fifty

five hundred

six hundred

seven hundred

eight hundred

nine hundred

one thousand

Rated flow coefficient Kv

eighty-five

two hundred and twenty

three hundred and forty

five hundred and thirty

seven hundred and seventy

one thousand three hundred and sixty

two thousand one hundred and thirty

three thousand and sixty

four thousand one hundred and sixty

five thousand four hundred and fifty

six thousand and nine hundred

eight thousand and five hundred

twelve thousand and two hundred

sixteen thousand and six hundred

twenty-one thousand and seven hundred

twenty-seven thousand five hundred and forty

thirty-four thousand

Nominal pressure MPa

zero point six

Rated angle °

seventy

Signal pressure KPa

20~100

flow characteristics

Approximately equal percentage

Medium temperature ℃

-20-200 (room temperature); -40-450 (medium temperature); -40-600 (high temperature)

Take over the flange

According to JB78-59 clamp type flange connection

Signal connection screw hole

M16×1.5

Equipped with actuator

Thin-film type

ZMA-2

ZMA-3

ZMA-4

ZMA-5

piston-type

ZSC-45

Valve body material

ZG230-450； 1Cr18Ni9； ZG1Cr18Ni9Ti、ZGOCr18Ni12Mo2Ti

Can be equipped with accessories

Handwheels, locators, air filters, pressure reducers, etc.

Main technical parameters of thin film actuator

model	ZMA-2	ZMA-3	ZMA-4	ZMA-5
Effective area cm2	two hundred and eighty	four hundred	six hundred and thirty	one thousand
Travel distance mm	sixteen	twenty-five	forty	sixty
Spring range KPa	20～100 ； 40～200 ； 20～60 ； 60~100

Main technical parameters of piston actuator

model	Piston diameter mm	Effective area cm2	Maximum travel mm	Maximum operating pressure KPa	Maximum output force N
ZSC-45	two hundred and fifty	four hundred and eighty-four	sixty	five hundred	twenty-one thousand and eight hundred

performance metrics

Executing Agency				Thin film actuator			Piston actuator
Category				Without locator		Equipped with locator	Equipped with locator
				Spring range KPa
				20～100 40～200	20～60 60～100
project	Basic error%			±8	-	±2.0	±2.0
	Return difference%			six	-	two	two
	Dead zone%			five	-	zero point eight	zero point eight
	Constant point deviation%	Qi Kai	Starting point	±4.0	±4.0	±2.0	±
			endpoint	±8	±8
		Qi Guan	Starting point	±8	±8
			endpoint	±4.0	±4.0
	Rated angle deviation%			±2.5
	Allowable leakage rate 1/h			Rated capacity of 2 × 10-2 × valves

Allowable pressure difference (MPa)

Equipped with actuator model		ZMA-2		ZMA-3		ZMA-4		ZMA-5		ZSC-45
		0°	70°	0°	70°	0°	70°	0°	70°	0°	70°
Nominal diameter mm	fifty	zero point six	zero point zero nine seven (0.22)
	eighty	zero point six	zero point zero three eight (0.086)
	one hundred	zero point five five six (0.6)	zero point zero one nine six (0.0445)
	one hundred and twenty-five			zero point six	zero point zero two five zero (0.0542)
	one hundred and fifty			zero point four four four (0.6)	zero point zero one five zero (0.0314)
	two hundred			zero point one eight five (0.407)	zero point zero zero five eight seven (0.0129)
	two hundred and fifty					zero point three three one (0.6)	zero point zero zero eight four five (0.0175)
	three hundred					zero point one eight one (0.385)	zero point zero zero four six one (0.00983)
	three hundred and fifty					zero point one three three (0.284)	zero point zero zero two nine two (0.00622)
	four hundred							zero point two one six (0.45)	zero point zero zero four eight five (0.0101)
	four hundred and fifty							zero point one seven one (0.356)	zero point zero zero three four one (0.00741)
	five hundred							zero point one three nine (0.289)	zero point zero zero two five (0.0052)
	six hundred									zero point six	zero point zero one nine
	seven hundred									zero point six	zero point zero one one nine
	eight hundred									zero point four four two	zero point zero zero seven nine five
	nine hundred									zero point three three nine	zero point zero zero five nine nine
	one thousand									zero point two three six	zero point zero zero four zero three

Note: The values in parentheses represent the allowable pressure difference with a locator.

ZSRW pneumatic piston regulating butterfly valve parts materials and recommended temperature range for use

Part Name	Material	Temperature range ℃
Valve body and valve plate	ZG230-450	-40-450
	ZG1Cr18Ni9Ti	-250-550
	ZG0Cr18Ni12Mo2Ti

Note: This table shows the maximum operating temperatures of various materials. In actual selection, the minimum and maximum operating temperatures of the materials should be determined based on the temperature range of the product's medium. The minimum operating temperature should not be lower than the lower limit of the medium temperature range, and the maximum operating temperature should not be higher than the upper limit of the medium temperature range.