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

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18968791139
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Shanghai Office: Chonggu Town, Qingpu District, Shanghai.

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

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Product 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
Basic error%	Equipped with locator	±1.0
Return difference%	Without locator	3.0
Return difference%	Equipped with locator	1.0
Dead zone%	Without locator	3.0
Dead zone%	Equipped with locator	0.4
Allowable leakage rate L/h		1 × 10-3 × rated capacity of valve

Specifications and Technical Parameters

Nominal diameter mm			20				25	40		50	65	80	100	150		200	250	300	350	400
Valve seat diameter mm			10	12	15	20	25	32	40	50	65	80	100	125	150	200	250	300	Can collaborate with our company Negotiate production
Rated flow rate Coefficient Kv		straight line	1.8	2.8	4.4	6.9	11	17.6	27.5	44	69	110	176	275	440	690	1000	1600
		Equal percentage	1.6	2.5	4	6.3	10	16	25	40	63	100	160	250	400	630	900	1440
Nominal pressure MPa			0.6 1.6 4.0 6.4
Travel distance mm			10				16	25			40			60			100
Traffic 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 form			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
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 the executing agency

Model number	ZHA(B)-1	ZHA(B)-2	ZHA(B)-3	ZHA(B)-4	ZHA(B)-5	ZHA(B)-6
Effective area cm2	200	280	400	630	1000	1600
Travel distance mm	10	16	25	40	60	1000
Spring range KPa	20-100 (standard); 40～200； 80～240； 20～60； 60~100

Allow pressure difference

Gas supply pressure MPa	Spring pressure KPa	Nominal diameter	20	20	20	20	25	32	40	50	65	80	100	125	150	200	250	300
Gas supply pressure MPa	Spring pressure KPa	Valve seat diameter	10	12	15	20	25	32	40	50	65	80	100	125	150	200	250	300
0.14	20-100	Allowable pressure difference (MPa)	5.3	3.7	2.3	1.3	0.8	0.5	0.5	0.3	0.25	0.2	0.12	0.12	0.08	0.05	0.05	0.035
0.24	40-200	Allowable pressure difference (MPa)	6.4	6.4	5.5	3.1	1.8	1.2	1.1	0.7	0.65	0.45	0.18	0.18	0.10	0.10	0.10	0.07

External dimensions

DN	D	PN(MPa)			H		H1
DN	D	1.6	4.0	6.4	Room temperature type	Medium temperature type	H1
25	280	185	190	200	685	835	115
32	280	200	210	210	696	847	120
40	325	220	230	235	754	905	130
50	325	250	255	265	784	935	145
65	410	275	285	295	1065	1219	180
80	410	300	310	320	1076	1239	195
100	410	350	355	370	1085	1248	200
125	495	410	425	440	1286	1498	245
150	495	450	460	475	1306	1518	255
200	495	550	560	570	1381	1593	275
250	620	670	740	752	1455	1645	380
300	620	770	803	819	1510	1690	430

Temperature range of main component materials

Part name	Material Science	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	teflon	-40～200℃
	carbon fibre	-120～350℃
	Flexible graphite	-40～600℃

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