ZJHQ, ZJHX Pneumatic Thin Film Three way Valve-Global supplier

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

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ZJHQ, ZJHX Pneumatic Thin Film Three way Valve

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Product Overview

The valve core structure of ZJHQ and ZJHX pneumatic thin film three-way regulating valves adopts a cylindrical thin-walled window shaped valve core guide, which is different from the liner guide of the plunger shaped valve core. Equipped with multiple spring actuators, it has the advantages of simple structure, light weight, small volume, and easy disassembly and assembly. Widely used for precise control of processes involving gases, liquids, and other media, such as maintaining pressure, flow rate, temperature, and liquid level at given values. Suitable for situations where a fluid is split into two streams through a three-way valve or two fluids are combined into one fluid through a three-way valve. When the nominal diameter and pressure difference are small, the merging valve can be used in diversion situations and can be used interchangeably, but when the nominal diameter is greater than 80mm and the pressure is low. In situations where there is a significant difference in diversion, it cannot be used interchangeably.

This series of products has two types: three-way merging and three-way branching. The nominal pressures are PN16, 40, and 64; The nominal diameter range is DN25-300. The applicable fluid temperature ranges from -60 ℃ to+450 ℃. The leakage standard is level IV. There are two types of flow characteristics: straight lines and parabolas.

Main component materials and recommended temperature range for use

Part name	Material Science	temperature range
Valve body Upper and lower valve covers	HT200	-20～200℃
	ZG230-450	-40～450℃
	ZG1Cr18Ni9Ti	-250～550℃
Valve core, valve seat, valve stem	1Cr18Ni9	-250～550℃
a seal	Rubber asbestos board
a seal	Stainless steel winding pad
filler	teflon
Upper and lower membrane covers	A3 steel plate
diaphragm	35CrMoA
diaphragm	35 A3
Bracket, top plate	HT200
Compression spring	60Si2Mn
Wave spun film	5806 rubber clip 480D nylon 66 mesh fabric

Main technical parameters and performance indicators
1. Main technical parameters of the regulating mechanism

Valve seat diameter mm	Confluence	25	32	40	50	65	80	100	125	150	200	250	300
	shunt	25	32	40	50	65	80	100	125	150	200	250	300
Rated flow rate Coefficient kv	Confluence	8.5	13	21	34	52	85	125	210	340	535	800	1260
	shunt	25	32	40	50	65	85	125	210	340	535	800	1260
Nominal pressure MPa		1.6 4.0 6.4
Travel distance mm		16		25		40			60			100
Traffic characteristics		straight line
Medium temperature ℃		-20-200, -40 to+250 (normal temperature type), -40 to 315 (medium temperature type)
Flange size		Cast iron flange size according to JB79-59, cast steel flange size according to JB79-59
flange type		The flange sealing surface type is in accordance with JB77-59, with cast steel flanges being smooth and cast steel flanges being concave
Valve body material		HT200,ZG230-450、ZG1Cr18Ni9
Valve core material		1Cr18Ni9
Upper valve cover type		Ordinary type (constant temperature type), hot plate type (medium temperature type)
Adjustable ratio		30:1
Air source connector		M16×1.5

2. Main technical parameters of the executing agency

Model number	ZHA(B)-3	ZHA(B)-4	ZHA(B)-5	ZHA(B)-6
Effective area cm2	400	630	1000	1600
Travel distance mm	16.25	40	60	1000
Spring range KPa	20～100； 40-200, 20-60, 60-100, 80-240

3. Performance indicators

project			Without locator	Equipped with locator
Basic error%			±6	±1.5
Return difference%			5	1.5
Dead zone%			4	0.6
Constant point deviation%	Qi Guan	Starting point	±2.5	±1.5
		End	±6.0
	Qi Kai	Starting point	±6.0
		End	±2.5
Rated travel deviation%			±2.5
Allowable leakage rate L/h			10-3 times the rated capacity of the valve

Note: Generally, a locator should be included
4. Allow pressure difference

Gas supply pressure	Spring pressure	25	32	40	50	65	80	100	125	150	200	250	300
0.14MPa	20-100	1220	750	500	300	300	200	120	120	80	50	50	25

Accessories available: Positioner handwheel mechanism, air filter, pressure reducer, etc.

5. External dimensions

Public diameter (mm)		25	32	40	50	65	80	100	125	150	200	250	300
L(mm)	PN1.6MPa	185	200	220	250	275	300	350	410	450	550	635	720
	PN4.0MPa	190	210	230	255	285	310	355	425	460	560	660	740
	PN6.4MPa	200	210	235	265	295	320	370	440	475	570	670	770
H1(mm)	PN1.6MPa	140	150	160	180	200	220	220	256	278	322	540	612
	PN4.0MPa	150	160	170	190	220	232	256	295	313	372	540	612
	PN6.4MPa	160	170	180	200	220	242	266	300	318	382	540	612
H(mm)	Ordinary type	435	441	465	480	584	585	575	762	772	792	1203	1234
H(mm)	Heat sink type	565	571	595	610	631	748	738	961	971	989	1525	1554
D(mm)		285				360			470
Weight (KG)		72	75	81	88	135	158	190	262	322	450	550	600

Note: Diverter valves with a nominal diameter less than 80 shall be replaced by merging valves of the same diameter

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