ZMA(B)P type pneumatic thin film single seat regulating valveDetailed product description：

Overview
The ZMA (B) P-type pneumatic diaphragm single seat regulating valve is the most commonly used actuator in automatic control systems, consisting of a pneumatic diaphragm actuator and a low flow resistance regulating valve. Single seat is suitable for situations with strict requirements for leakage, low pressure difference before and after the valve, and media with certain viscosity and fiber content; The double seat valve has the characteristics of small unbalanced force, large allowable pressure difference, and large flow capacity, and is suitable for situations where leakage requirements are not strict; Sleeve valves have good stability, are not prone to vibration, have low noise, and are less sensitive to temperature. They are suitable for situations with large pressure differentials and less stringent leakage requirements.

Main technical performance indicators

project		indicator value
Basic error%	Without locator	±5.0
	Equipped with locator	±1.0
Return difference%	Without locator	three
	Equipped with locator	one
Dead zone%	Without locator	three
	Equipped with locator	zero point four
Allowable leakage rate L/h		1 × 10-3 × rated capacity of valve

Specifications and Technical Parameters

Nominal diameter mm

twenty

twenty-five

forty

fifty

sixty-five

eighty

one hundred

one hundred and fifty

two hundred

two hundred and fifty

three hundred

three hundred and fifty

four hundred

Valve seat diameter mm

ten

twelve

fifteen

twenty

twenty-five

thirty-two

forty

fifty

sixty-five

eighty

one hundred

one hundred and twenty-five

one hundred and fifty

two hundred

two hundred and fifty

three hundred

Can collaborate with our company Negotiate production

rated flow Coefficient Kv

straight line

one point eight

two point eight

four point four

six point nine

eleven

seventeen point six

twenty-seven point five

forty-four

sixty-nine

one hundred and ten

one hundred and seventy-six

two hundred and seventy-five

four hundred and forty

six hundred and ninety

one thousand

one thousand and six hundred

equal percentage

one point six

two point five

four

six point three

ten

sixteen

twenty-five

forty

sixty-three

one hundred

one hundred and sixty

two hundred and fifty

four hundred

six hundred and thirty

nine hundred

one thousand four hundred and forty

Nominal pressure MPa

0.6 1.6 4.0 6.4

Travel distance mm

ten

sixteen

twenty-five

forty

sixty

one hundred

flow characteristics

Straight line, equal percentage, 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 size

Cast iron flange size according to JB78, cast steel flange size according to JB79

Flange type

Compliant with JB78-59 and JB79-59 standards, can be ordered and produced according to JB/79.1-94, JB/79.2-94, ANSI, JIS, DIN and other standards

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

Valve type

Straight through single seat cast ball valve

Valve core material

1Cr18Ni9、0Cr18Ni12Mo2Ti CF8 CF8M

Upper valve cover form

Ordinary type (constant temperature type), hot plate type (medium temperature type), low temperature type

Can be equipped with accessories

Positioner, handwheel, electric/pneumatic converter, air filter, pressure reducer

Adjustable ratio R

30:1

Air source connector

M16×1.5

Main technical parameters of ZMA (B) P-type pneumatic thin film single seat regulating valve actuator

Model number	ZHA(B)-1	ZHA(B)-2	ZHA(B)-3	ZHA(B)-4	ZHA(B)-5	ZHA(B)-6
Effective area cm2	two hundred	two hundred and eighty	four hundred	six hundred and thirty	one thousand	one thousand and six hundred
Travel distance mm	ten	sixteen	twenty-five	forty	sixty	one thousand
Spring range KPa	20-100 (standard); 40～200； 80～240； 20～60； 60~100

Allowable pressure difference

gas supply pressure MPa

Spring pressure KPa

Nominal Diameter

twenty

twenty

twenty

twenty

twenty-five

thirty-two

forty

fifty

sixty-five

eighty

one hundred

one hundred and twenty-five

one hundred and fifty

two hundred

two hundred and fifty

three hundred

Valve seat diameter

ten

twelve

fifteen

twenty

twenty-five

thirty-two

forty

fifty

sixty-five

eighty

one hundred

one hundred and twenty-five

one hundred and fifty

two hundred

two hundred and fifty

three hundred

zero point one four

20-100

Allowable pressure difference (MPa)

five point three

three point seven

two point three

one point three

zero point eight

zero point five

zero point five

zero point three

zero point two five

zero point two

zero point one two

zero point one two

zero point zero eight

zero point zero five

zero point zero five

zero point zero three five

zero point two four

40-200

six point four

six point four

five point five

three point one

one point eight

one point two

one point one

zero point seven

zero point six five

zero point four five

zero point one eight

zero point one eight

zero point one zero

zero point one zero

zero point one zero

zero point zero seven

DN	D	PN(MPa)			H		H1
		one point six	four	six point four	Room temperature type	Medium temperature type
twenty-five	two hundred and eighty	one hundred and eighty-five	one hundred and ninety	two hundred	six hundred and eighty-five	eight hundred and thirty-five	one hundred and fifteen
thirty-two	two hundred and eighty	two hundred	two hundred and ten	two hundred and ten	six hundred and ninety-six	eight hundred and forty-seven	one hundred and twenty
forty	three hundred and twenty-five	two hundred and twenty	two hundred and thirty	two hundred and thirty-five	seven hundred and fifty-four	nine hundred and five	one hundred and thirty
fifty	three hundred and twenty-five	two hundred and fifty	two hundred and fifty-five	two hundred and sixty-five	seven hundred and eighty-four	nine hundred and thirty-five	one hundred and forty-five
sixty-five	four hundred and ten	two hundred and seventy-five	two hundred and eighty-five	two hundred and ninety-five	one thousand and sixty-five	one thousand two hundred and nineteen	one hundred and eighty
eighty	four hundred and ten	three hundred	three hundred and ten	three hundred and twenty	one thousand and seventy-six	one thousand two hundred and thirty-nine	one hundred and ninety-five
one hundred	four hundred and ten	three hundred and fifty	three hundred and fifty-five	three hundred and seventy	one thousand and eighty-five	one thousand two hundred and forty-eight	two hundred
one hundred and twenty-five	four hundred and ninety-five	four hundred and ten	four hundred and twenty-five	four hundred and forty	one thousand two hundred and eighty-six	one thousand four hundred and ninety-eight	two hundred and forty-five
one hundred and fifty	four hundred and ninety-five	four hundred and fifty	four hundred and sixty	four hundred and seventy-five	one thousand three hundred and six	one thousand five hundred and eighteen	two hundred and fifty-five
two hundred	four hundred and ninety-five	five hundred and fifty	five hundred and sixty	five hundred and seventy	one thousand three hundred and eighty-one	one thousand five hundred and ninety-three	two hundred and seventy-five
two hundred and fifty	six hundred and twenty	six hundred and seventy	seven hundred and forty	seven hundred and fifty-two	one thousand four hundred and fifty-five	one thousand six hundred and forty-five	three hundred and eighty
three hundred	six hundred and twenty	seven hundred and seventy	eight hundred and three	eight hundred and nineteen	one thousand five hundred and ten	one thousand six hundred and ninety	four hundred and thirty

Temperature range of main component materials

Part Name	material	temperature range
Valve body Upper valve cover	HT200	-20～200℃
	ZG230-450	-40～450℃
	ZG1Cr18Ni9Ti	-250～550℃
Valve core, valve seat, valve stem	1Cr18Ni9	-250～550℃
Upper and lower membranes	A3 steel plate
Bracket, top cover	HT200
compression spring	60Si2Mn
Corrugated film	5806 rubber clip 480D nylon 66 mesh fabric
Packing material	Polytetrafluoroethylene	-40～200℃
	carbon fiber	-120～350℃
	flexible graphite	-40～600℃

ZMA (B) P-type Pneumatic Thin Film Single Seat Regulating Valve