ZMAN pneumatic seat regulating valve

關(guān)注次數(shù)：

Overview of ZMAN pneumatic double seat control valve
ZMAN series pneumatic thin fat through engine valve dual oriented structure, equipped with multi spring actuator. Has the advantages of compact structure, surface light, sensitive action, low loss, pressure drop description allows a large pressure difference, valve capacity, flow characteristics of Trichosanthes really, convenient maintenance and so on, can use dry harsh working conditions. Especially suitable for the valve pressure difference, workplace requirements without leakage. This series of products are the standard type, adjust the cut-off valve, bellows seal type, jacket type insulation and other varieties. Nominal grade products are PN10, 16, 40, 64; body diameter range of DN20~300. Application of fluid temperature from -196 ℃ ~+560 ℃ range of different grades. Leakage star standard with IV or VI. Flow characteristics such as linear or percentage. A variety of different specifications can be selected.

Materials of main parts

Name	Texture of material
The valve body valve cover	ZG230-450、ZG0Cr18Ni9
Valve seat	0Cr18Ni9, 0Cr18Ni9+PTFE, 0Cr18Ni9+ division Chatterley
Filler	PTFE, flexible graphite
Corrugated	0Cr18Ni9
Shim	Graphite spiral wound gasket (V6590), F4
Film cover	A3、0Cr18Ni9
Corrugated diaphragm	Clip reinforced nylon fabric nitrile rubber
Spring	60Si2Mn
Valve push rod	0Cr18Ni9、2cr13

The main technical parameters of the valve seat

DN	25	32	40	50	65	80	100	125	150	200	250	300	350	400
Seat diameter mm	25	32	40	50	65	80	100	125	150	200	250	300	350	400
Ratedkv	10	16	25	40	63	100	160	250	400	630	1000	1600	1960	2560
Nominal pressure（MPa）	1.6、2.5、4.0、6.4
Trip（mm）	16				25			40				60			100	130
The effective area of the film Ae（cm2）	280				350			560				900			1400	Piston type
Signal range KPa	20-100、40-200、80-240
Gas pressure steam source MPa	0.1-0.4															0.4-0.7
The inherent flow characteristics	Linear, equal percentage, quick opening
The inherent adjustable ratio	50:1
The leakage class	Hard seal, soft seal IV V; VI
Flange size	According to JB/79. (2) _94, HG20592_97, GB, ANSI, JIB, DIN and other standards
Body material	WCB, 304, 316, WC6, nickel, titanium, Hastelloy, Monel etc.
Valve material	304, 316, 420, nickel, titanium, Hastelloy, Monel etc.
Working temperature ℃	-40~+230 ℃ (room temperature), +230~+450 ℃, +450~+560 ℃ (Zhong Wen) (high temperature), -40~-196 ℃ (low temperature)
Series type	at room temperature, medium temperature, low temperature type. Bellows seal type, jacket type heat, regulating off type

Main performance index

Serial number	Project			Standard type regulating valve		High temperature, low temperature valve
	Project			Not with a locator	With a locator	Not with a locator	With a locator
1	The basic error（%）			±5	±1	±15	±4
2	The return difference<（%）			3	1	10	3
3	The dead zone <（%）			3	0.4	8	1
4	Always point bias <（%）	Open air	The starting point	±2.5	±1	±6	±2.5
		Open air	Finish	±5		±15
		Air to close	The starting point	±5		±15
		Air to close	Finish	±2.5		±6
5	Rated stroke deviation <（%）			±2.5	+2.5	+6	+2.5

Gas off type (positive effect) metal sealing type allows differential pressure gauge Company： MPa

The executive agency model	Spring range（KPa）	Air pressure（KPa）	Locator (with / no)	Seat diameter dn(mm)
The executive agency model	Spring range（KPa）	Air pressure（KPa）	Locator (with / no)	20	25	32	40	50	65	80	100	125	150	200
ZHA-22	20-100	0.14	Whether or not	0.92	0.72
	20-100	0.14	Belt	5.50	4.33
	40-200	0.25	Belt	6.40	6.14
	80-240	0.4	Belt	6.40	6.40
ZHA-23	20-100	0.14	Whether or not			0.73	0.58	0.46
	20-100	0.14	Belt			4.40	3.49	2.77
	40-200	0.25	Belt			6.24	4.94	3.92
	80-240	0.4	Belt			6.40	6.40	6.40
ZHA-34	20-100	0.14	Whether or not						0.55	0.44	0.35
	20-100	0.14	Belt						3.27	2.64	2.10
	40-200	0.25	Belt						4.63	3.75	2.98
	80-240	0.4	Belt						6.40	6.40	6.40
ZHA-45	20-100	0.14	Whether or not									0.48	0.40	0.30
	20-100	0.14	Belt									2.90	2.41	1.80
	40-200	0.25	Belt									4.11	3.42	2.55
	80-240	0.4	Belt									6.40	6.40	5.56

Air to close (reaction) metal sealing type allows differential pressure gauge Company： MPa

The executive agency model	Spring range（KPa）	Air pressure（KPa）	Locator (with / no)	閥座直徑dn(mm)
The executive agency model	Spring range（KPa）	Air pressure（KPa）	Locator (with / no)	20	25	32	40	50	65	80	100	125	150	200
ZHA-22	20-100	0.14	no	0.92	0.72
	40-200	0.25	Belt	5.51	4.33
	80-240	0.28	Belt	6.40	6.40
ZHA-23	20-100	0.14	no			0.73	0.58	0.46
	40-200	0.25	Belt			4.41	3.49	2.77
	80-240	0.28	Belt			6.40	6.40	6.40
ZHA-34	20-100	0.14	no						0.55	0.44	0.35
	40-200	0.25	Belt						3.27	2.65	2.11
	80-240	0.28	Belt						6.40	6.40	5.63
ZHA-45	20-100	0.14	no									0.48	0.40	0.30
	40-200	0.25	Belt									2.90	2.41	1.81
	80-240	0.40	Belt									6.40	6.40	4.82

Note that allows differential pressure gauge:
1 packing material for the PTFE
Flow valve 2 medium off in the opposite direction
Leakage in grade IV 3 metal seal type
4 numerical by nominal pressure, pressure, temperature limits
The 5 bellows seal type P2 ≠ 0 re check;

Dimensions and weight Company：mm

All diameter DN			25	32	40	50	65	80	100	125	150	200	250	300
L	PN1.6MPa		185	200	220	250	275	300	350	410	450	550	670	770
	PN4.0MPa		190	210	230	255	285	310	355	425	460	560	740	805
	PN6.4MPa		200	220	240	265	295	320	370	440	475	570	750	820
A			280				360			470			580
H1		PN16、40	112	118	130	144	178	192	195	245	255	290	441	503
H2		Actuator	280		310		395			525			725
H3		High temperature heat sink type	235	250	256	368	365	384	394	465	470	540	680	730
H3		Bellows seal	364	425	430	445	660	680	690	748	740	780	900	940
H		Standard room temperature	435	455	490	510	630	645	655	855	875	945	1400	1600
Low temperature type		H3	750										900
		H4	92	92	92	92	98	98	98	110	120	120	180	180
		D	355	355	355	390	430	465	520	585	660	770	850	850
Weight kg		PN16/40	26	28	37	43	67	71	88	136	168	260	560	670
		N64/100	30	35	47	58	84	88	109	179	202	305	680	840
		Low temperature type PN16/40	51	55	65	74	95	110	149	218	295	325	640	760
		Low temperature type PN64/100	64	69	69	93	119	138	186	273	369	406	800	950

When ordering, please fill in "specification" or indicate the following contents:
One, if the order has not selected models, please provide the parameters are used to send us your
1, nominal diameter, nominal flow in coefficient Kv
2, the fluid properties (including the nominal pressure, temperature, viscosity and pH value "
3, the valve action form (gas closed or gas - Open)
4, flow at
5, in front of the valve, the valve pressure
6, valve body, broad core material
7, the input signal
8, with the attachment, the attachment type, so that we can correct for your selection.
Two, special requirements
1, special inspection
2, complete degreasing, water treatment;
3, no copper processing;
4, special interface, piping;
5, the use of vacuum conditions;
6, specify the color of the coating
7, special medium (gas, chlorine, nitrogen)
8, the use of stainless steel connections;
Three, if the unit has been selected from the design of our products, please click models directly to our sales department order
Four, the occasion is very important when using or complicated pipelines, please make cocoons provide design drawings and detailed parameters, from our experts to your review gatekeeper.

Note: This product performance accords with GB/T4213 - 2008

ZMAN pneumatic seat regulating valve

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