Pneumatic fluorine lined cut-offcontrol valve

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Product Detail

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Summary

ZJHPF pneumatic fluorine-lined single-seat control valve is a kind of anti-corrosion straight-through single-seat control valve, the inner wall of the valve in contact with the fluid and the components in the valve are made of high-pressure injection molding process, lined with corrosion-resistant, age-resistant polyperfluoroethylene propylene (F46), and PTFE bellows seal. It is widely used in the control of strong corrosive media such as acid and alkali and toxic and volatile gases and liquids.

Characteristic

1. Corrosion resistance. Resistant to almost all media, including concentrated nitric acid and aqua regia.
2. Good sealing performance. Double sealing with bellows and packing to ensure no leakage.
3. The leakage is small. Since the spool and seat are soft-sealed, no leakage is ensured.
4. Equipped with HA actuator, large output force and compact structure. The product conforms to GB/T4213-92.

Executive Agency

Type: ZHA(B) multi-spring membrane actuator
Diaphragm material: ethylene propylene rubber clip nylon cloth, nitrile rubber clip nylon cloth Spring range: 20~100, 80~240kPa
Air supply pressure: 140~400kPa Air source interface: Rc1/4°
Ambient temperature: -30~+70°C
Valve action type: the positive or reaction actuator is used to realize the gas-close type or gas-open type of the valve
Accessories: positioners, air filter pressure reducers, position retention valves, travel switches, valve position transmitters, solenoid valves, hand wheel mechanisms, etc

Effective area cm²	350	350	560	900
Trip mm	16	25	40	60
Spring range KPa	20~100(standard):40~200;80~240;20~60;60~100

Performance

Leakage: less than 0.01% of the valve's rated capacity Return: With positioner: less than 1% of full stroke
Basic error: with positioner: less than ±1% of the full stroke Note: Standard V-type PTFE packing is used
Adjustable range 30:1

Seat diameter	3	4	5	6		8	10	12	15	20	26	32	40	50	65	80	100	150
Kv	0.08	0.12	0.20	0.32	0.50	0.80	1.2	2.0	3.2	5.0	8	12	20	32	50	70	00	240
Rated stroke	10										16

Main technical parameters

Seat diameter mm			20				25	40		50	65	80	100	150		200
Nominal diameter mm			10	12	15	20	25	32	40	50	65	80	100	125	150	200
Rated flow coefficient kv		straight line	1.8	2.8	4.4	6.9	11	176	27.5	44	69	110	176	275	440	690
		and other percentages	1.6	2.5		6.3	10	16	25	40	63	100	160	250	400	630
Nominal pressure MPa			0.61.64.06.4
Schedule mm			16					25			40			60
Flow characteristics			Straight line, equal percentage
Medium temperature °C			-20~200(Room temperature type)、-40~+250、-40~250(Medium temperature type)
Flange size			The flange sealing surface type is JB77-59, of which the cast steel flange is smooth, and the cast steel flange is concave
Flange type			Cast iron flange size according to JB79-59, cast steel flange size according to JB79-59
Body material	PN (MPa)	0.6,1.6	HT200
		4.0,6.0	WCB(ZG230-450)、ZG1Cr18Ni9Ti、ZGOCr18Ni12Mo2Ti
Spool material			1Cr18Ni9、0Cr18Ni12Mo2Ti
Upper bonnet type			Normal type (normal temperature type), hot sheet type (medium temperature type)
Adjustable ratio			50:1

Note: We can provide users with ANSI, JPI, JIS flange products, and the flange distance is determined according to user needs.

Main technical parameters of the executive agency

Model	ZHA(B)-22	ZHA(B)-23	ZHA(B)-34	ZHA(B)-45
Effective area cm²	350	350	560	900
Itinerary mm	16	25	40	60
Spring range KPa	20～100(standard);40~200;80~240;20~60;60~100

Performance index

Projects		Metric values	Projects				Metric values
Fundamental error %	Without locator	±5.0	Beginning and end point bias %	Gas off	Without locator	Start point	±5.0
						terminal	±2.5
	With locator	±1.0			With locator	Start point	±1.0
						terminal	±1.0
Return %	Without locator	3.0		Air on	Without locator	Start point	±2.5
						terminal	±5.0
	With locator	1.0			With locator	Start point	±1.0
Dead zone %	Without locator	3.0				terminal	士10
	With locator	0.4					1×10-4× Valve rated capacity