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Home > Products > Regulator valve > Pneumatic diaphragm cage type single seat valve

Description Material Performance Product Size Specifications

The new ZXG series of films through single seat pneumatic control valve driven by the top structure, equipped with multi spring actuator. The advantages of compact structure, light weight, flexible action, fluid channel is S streamline, pressure drop loss, large valve capacity, accurate flow characteristics, convenient assembly and disassembly, etc.. Widely used in precise control of gas, liquid and other media, process parameters such as pressure, flow, temperature, liquid level is maintained at a given value. Particularly suitable for the small amount of pressure difference before and after the leakage of small valve.
This series of products of the standard type, regulating cut off type, bellows seal type, jacket insulation type and other varieties. Product nominal pressure level is PN10, 16, 40, 64; body diameter range DN20~200. Applicable fluid temperature range from -200 to ~560. Leakage standard has IV or VI level. The flow characteristic is linear or equal.

Main part material：

Valve body, valve cover：HT200，ZG230-450，ZG1Cr18Ni9Ti

Valve core and valve seat：1Cr18Ni9Ti，Welding division Stellite alloys

Soft sealing valve core：Reinforced PTFE

Packing: PTFE, flexible graphite

corrugated pipe：1Cr18Ni9Ti

Gasket: Rubber asbestos board, 10, 1Cr18Ni9Ti, asbestos gasket

Film cover：A3

Corrugated diaphragm: butyl rubber clip reinforced polyester fabric

Spring：60SIMN

Stem, push rod：2Cr13、1Cr18Ni9Ti

bushing：2Cr13

Nominal diameter DN（mm）			20				25		32			40		50		65			80		100		125		150		200
			(10)	(12)	(15)	(20)
Rated flow coefficient KV	straight line		1.8	2.8	4.4	6.9		11		17.6			27.5		44		69			110		176		275		440		690
	Equal percentage		1.6	2.5	4.0	6.3		10		16			25		40		63			100		160		250		400		630
Rated travel L（mm）			16								25							40							60
Ae（cm2）			280								400							600							1000
Signal range Pr(KPa)			20~100、40~200
Gas pressure Ps(MPa)			0.14~0.4
Inherent flow characteristic			Linear, equal percentage
Inherently adjustable ratio			50
Allowable leakage			Hard seat: grade IV (10-4 rated capacity) soft seat: VI
Nominal pressure PN（MPa）			1.0、1.6、4.0、6.4
working temperature t（℃）		Normal temperature type	-20~200、-40~240、-60~250
		Heat dissipation type	-40~450、-60~450
		High temperature type	450~560
		Low temperature type	-60~-100、-100~-200、-200~-250

Nominal diameter		20	25	32	40	50	65	80	100	125	150	200
Standard type	PN16	16	17	19	21	23	35	48	57	64	70	900
	PN40	16	17	19	21	23	35	48	60	67	74	95
	PN64	20	21	25	30	33	44	71	91	100	115	145
Heat radiation high temperature type		17	18	20	22	25	36	51	60	67	74	95
Corrugated pipe type		20	21	25	30	33	48	71	91	102	115	145
Low temperature type		20	21	23	26	28	42	58	69	77	84	108

Standard type, high temperature heat shape, dimension table unit：MM

Nominal diameter			20	25	32	40	50	65	80	100	125	150	200
Nominal diameter			282		308			394			494
L	PN16，40		150	160	180	200	230	290	310	350	400	480	600
L	PN64		230	230	260	260	300	340	380	430	500	550	650
H1	PN16		53	58	70	75	83	93	100	110	125	143	170
	PN40		53	58	70	75	83	93	100	118	135	150	188
	PN64		65	70	78	85	90	103	108	125	148	173	208
H	mark accurate type	PN16	429	438	474	476	502	622	646	687	835	889	981
		PN40	429	438	474	476	502	622	646	695	845	896	1000
		PN64	456	468	511	525	535	663	673	705	868	958	1260
	Heat radiation high temperature type		570	570	610	610	630	730	810	820	960	1090	1180

The heat dissipation high temperature height (H) is the numerical value of PN16

**Jacket height of H1 and H were increased 15%

Bellows seal type Company：MM

Nominal diameter	20	25		32	40	50		65	80	100	125	150	200
ФA	282		308				394				494
L	150	160		180	200	230		290	310	350	400	480	600
H1	53	58		70	75	83		93	100	110	125	143	170
H Standard type	446.5	453.5		490	542	537.5		617.5	667	675	735	907.5	900

Nominal diameter			20	25	32	40	50	65	80	100	125	150	200
ФA			282		308			394			494
L	PN16, PN40		150	160	180	200	230	290	310	350	400	480	600
L	PN64		230	230	260	260	300	340	380	430	500	550	650
H1	PN16, PN40		52.5	5705	70	75	8205	92.5	100	117.5	135	150	187.5
H1	PN64		65	70	7705	85	900	102.5	107.5	125	147.5	172.5	207.5
H2	-60~-100℃		500	500	500	500	500	600	600	600	700	700	700
	-100~-200℃		700	700	700	700	700	800	800	800	900	900	900
	-200~-250℃		900	900	900	900	900	1000	1000	1000	1100	1100	1100
H	-60~ -100 (℃)	PN16, PN40	810	810	832	832	832	1026	1026	1024	1200	1198	1198
	-60~ -100 (℃)	PN64	810	810	832	832	832	1026	1026	1024	1200	1198	1198
	-100~ -200 (℃)	PN16, PN40	1010	1010	1032	1032	1032	1226	1226	1124	1400	1398	1398
	-100~ -200 (℃)	PN64	1010	1010	1032	1032	1032	1226	1226	1124	1400	1398	1398
	-200~ -250 (℃)	PN16, PN40	1210	1210	1032	1232	1232	1426	1426	1424	1600	1598	1598
	-200~ -250 (℃)	PN64	1210	1210	1032	1232	1232	1426	1426	1424	1600	1598	1598
ФD3			260	260	285	305	340	370	405	460	525	590	700
ФD4			290	290	315	335	370	400	435	490	555	630	740
Bolt hole N(個(gè))-D(diameter)			8-14	8-14	8-14	8-16	8-16	10-16	10-16	12-18	14-18	16-18	18-18