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Home > Products > Regulator valve > Pneumatic film lining fluorine regulating valve

Description Material Performance Product Size Specifications

Pneumatic membrane PTFE single seat control valve is controlled instrument in the execution unit. It consists of pneumatic diaphragm actuator and direct single seat of fluorine plastic valve of two parts. Since the valve wetted parts are high-pressure injection molding process, lining has the capability to corrosion and aging of FEP (F46), and the use of PTFE bellows seal, so that the valve is widely used in chemical, petroleum, metallurgy, medicine, power and other industries in the process of acid and alkali corrosion medium and toxic and volatile gas and liquid medium control.

Valve body, valve cover：HT200，ZG230-450，ZG1Cr18Ni9Ti
Valve core and valve seat：1Cr18Ni9Ti，Welding division Stellite alloys
Soft sealing valve core: Reinforced PTFE
Corrugated pipe: 1Cr18Ni9Ti PTFE bellows
Filling piece: Rubber asbestos board, 10'', 1Cr18Ni9Ti asbestos gasket
Membrane cover: A3
Corrugated diaphragm: butyl rubber clip reinforced polyester fabric
Spring：30SIMN
Stem, push rod：2Cr13、1Cr18Ni9Ti
bushing：2Cr13

project	performance index
Basic error％	≤±8
Return difference％	≤8
dead zone％	≤6
Rated flow coefficient error	≤±10％（Kv≤5時±15％）
Leakage rate	≤0.01％Rated capacity of valve

Nominal diameter DN（mm）		G3/4''						20						25	32	40		50		65	80	100	150
Valve seat diameter DN（mm）		3	4	5	6	7	8	10	12		15	20		26	32	40		50		65	80	100	150
Rated flow coefficient KV		0.08	1.12	0.20	.032	0.50	0.80	1.2	2		3.2	5		8	12	20		32		50	70	100	240
Flow characteristics		straight line						Linear, equal percentage
Nominal pressure PN（Mpa）		1.01.6
With the actuator	Model	ZHA-22															ZHA-23		ZHA-34				ZHA-45
	effective area cm	200								280							400		630				1000
	Working stroke mm	10								10			16				25		40				60
	Spring range KPa	20-10040-200
Mode of action		Air or gas
working temperature		-30~200℃
Inherently adjustable ratio R		30：1

Nominal diameter DN（㎜）	3/4″	20	25	32	40	50	65	80	100	150
L	116	180	185	200	220	250	275	300	350	480
A	245	245	245	245	290	290	362	362	362	454
H	401	445	485	495	523	532	697	699	699	817
H1	50	65	70	80	71	88	102	140	170	190
weight	17	17	19	21	28	31.5	54	64	80	120

The standard group with the single seat pneumatic valve, the output force of the pneumatic diaphragm actuator is certain. In order to achieve the ideal adjustment and closing, the pressure of the valve must be limited to a certain value, the product should be selected according to table 3. When the pressure exceeds the allowable value, adjustable spring preload, equipped with a valve positioner or use other actuators to overcome the imbalance of power, but the order must contact with my company, explaining the situation before ordering.

Gas supply pressure（MPa）	Spring range（MPa）	Nominal diameter（DN）	G3/4''	20				25	32	40	50	65	80	100	150
Gas supply pressure（MPa）	Spring range（MPa）	Valve seat diameter（DN	3-8	10	12	15	20	26	32	40	50	65	80	100	150
0.14	20~100	Allowable differential pressure△P（MPa）	1.6					0.8	0.5	0.5	0.3	0.25	0.2	0.12	0.08
0.24	40~200		-						1.2	1.1	0.7	0.65	0.45	0.28	0.20

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