Flanged Gate Valve

Product overview

It's used to cut off or connect the flow of pipeline which is used in circumstance such as petroleum, chemical, fire and power station. It can realize remote control when using an electric or pneumatic actuator.

Product Features

The seat structure is made of stainless steel and cemented carbide with long service life.
Flexible graphite packing, reliable sealing, easy and flexible operation.
Manual, pneumatic, electric and gear drive.
Structural form is elastic wedge type single gate, rigid wedge type single gate double gate.

Administer Standard

Design and Manufacture	Face to Face	Flange Dimension	Pressure Temperature Rating	Inspection and Test
GB12234	GB12221	GB9113, JB79	GB9131, GB12224	GB/T13927-2008, GB/T26480-2011

Pressure Test

(MPa)

Test Item	1.6	2.5	4.0	6.4	10.0	16.0	25.0	42.0
Shell	2.4	3.75	6.0	9.6	15.0	24.0	37.5	63
Water Seal Test	1.76	2.75	4.4	7.04	11.0	17.6	27.5	46.2
Backseat Test	1.76	2.75	4.4	7.04	11.0	17.6	27.5	46.2
Air Seal Test	colspan=8 0.4–0.7

Main Part Materials and Property

Body / Cover Disc	Stem	Sealing Face	Sealing Shim	Packing	Working Temperature (°C)	Suitable Medium
WCB	2Cr13	13Cr, STL (body integral), PTFE, Nylon	Flexible Graphite; 1Cr13/Flexible Graphite; 08 Soft Steel; 0Cr18Ni9Ti; 0Cr17Ni12Mo2Ti; XD550F(T) PTFE	Flexible Graphite; Reinforced Flexible Graphite; SFB/260; PTFE	≤425	Water, Steam, Oil
WC1	38CrMoAl / 25Cr2MoVA	13Cr, STL (body integral), PTFE, Nylon	Flexible Graphite; 1Cr13/Flexible Graphite; 08 Soft Steel; 0Cr18Ni9Ti; 0Cr17Ni12Mo2Ti; XD550F(T) PTFE	Flexible Graphite; Reinforced Flexible Graphite; SFB/260; PTFE	≤450	Water, Steam, Oil
WC6	38CrMoAl / 25Cr2MoVA	13Cr, STL (body integral), PTFE, Nylon	Flexible Graphite; 1Cr13/Flexible Graphite; 08 Soft Steel; 0Cr18Ni9Ti; 0Cr17Ni12Mo2Ti; XD550F(T) PTFE	Flexible Graphite; Reinforced Flexible Graphite; SFB/260; PTFE	≤540	Water, Steam, Oil
WC9	38CrMoAl / 25Cr2MoVA	13Cr, STL (body integral), PTFE, Nylon	Flexible Graphite; 1Cr13/Flexible Graphite; 08 Soft Steel; 0Cr18Ni9Ti; 0Cr17Ni12Mo2Ti; XD550F(T) PTFE	Flexible Graphite; Reinforced Flexible Graphite; SFB/260; PTFE	≤570	Water, Steam, Oil
ZGCr5Mo	38CrMoAl / 25Cr2MoVA	13Cr, STL (body integral), PTFE, Nylon	Flexible Graphite; 1Cr13/Flexible Graphite; 08 Soft Steel; 0Cr18Ni9Ti; 0Cr17Ni12Mo2Ti; XD550F(T) PTFE	Flexible Graphite; Reinforced Flexible Graphite; SFB/260; PTFE	≤540	Water, Steam, Oil
ZG1Cr18Ni9Ti	1Cr18Ni9Ti	13Cr, STL (body integral), PTFE, Nylon	Flexible Graphite; 1Cr13/Flexible Graphite; 08 Soft Steel; 0Cr18Ni9Ti; 0Cr17Ni12Mo2Ti; XD550F(T) PTFE	Flexible Graphite; Reinforced Flexible Graphite; SFB/260; PTFE	≤200	Nitric Acid
ZG1Cr18Ni12Mo2Ti	1Cr18Ni12Mo2Ti	13Cr, STL (body integral), PTFE, Nylon	Flexible Graphite; 1Cr13/Flexible Graphite; 08 Soft Steel; 0Cr18Ni9Ti; 0Cr17Ni12Mo2Ti; XD550F(T) PTFE	Flexible Graphite; Reinforced Flexible Graphite; SFB/260; PTFE	≤200	Acetic Acid

Flanged Gate Valve

Main Dimension

Unit:mm

DN	L	D	D1	D2	D6	b	N-Φd	H	D0	L2	H1	DA	Electric Actuator Code
15	90	95	65	45	-	12	4-Φ14	170	120	-	-	-	-
20	100	105	75	55	-	14	4-Φ14	190	140	-	-	-	-
25	120	115	85	65	-	14	4-Φ14	195	140	-	-	-	-
32	140	135	100	78	-	16	4-Φ18	260	160	-	-	-	-
40	165	145	110	85	-	16	4-Φ18	295	160	590	595	365	DZW10
50	180	160	125	100	-	16	4-Φ18	325	180	590	653	365	DZW10
65	195	180	145	120	-	18	4-Φ18	380	180	590	665	365	DZW10
80	210	195	160	135	-	18	4-Φ18	420	200	590	725	365	DZW10
100	230	215	180	155	-	20	8-Φ18	520	200	590	787	365	DZW15
125	255	245	210	185	-	22	8-Φ18	610	240	590	934	365	DZW20
150	280	280	240	210	-	22	8-Φ23	710	240	590	955	365	DZW20
200	330	335	295	265	-	22	8-Φ23	915	320	590	1105	365	DZW20
250	380	390	350	320	-	24	12-Φ23	1095	320	810	1343	470	DZW30
300	420	440	400	368	-	26	12-Φ23	1275	400	810	1516	470	DZW30
350	450	500	460	428	-	26	16-Φ23	1500	400	810	1678	470	DZW45
400	480	565	515	482	-	26	16-Φ25	1760	500	830	1849	550	DZW90
450	510	615	565	532	-	26	20-Φ25	1920	500	830	1937	550	DZW120
500	540	670	620	585	-	28	20-Φ25	2170	720	830	2234	550	DZW120
600	600	780	725	685	-	28	20-Φ30	2259	720	870	2432	320	DZW180
700	660	895	840	800	-	30	24-Φ30	2438	800	870	2489	320	DZW250
800	720	1010	950	905	-	32	24-Φ34	2940	950	1170	2643	570	DZW250
900	780	1110	1050	1005	-	34	28-Φ34	3200	1000	1170	2935	570	DZW350
1000	840	1220	1160	1115	-	34	28-Φ34	3418	1000	1170	3410	570	DZW500
1200	960	1450	1380	1325	-	38	32-Φ41	3979	1000	1170	4275	570	DZW500
1400	1015	1675	1590	1525	-	48	36-Φ42	4950	1000	1170	5150	570	DZW500

Flanged Gate Valve

Unit:mm

DN	L	D	D1	D2	D6	b	N-Φd	H	D0	L2	H1	DA	Electric Actuator Code
15	130	95	65	45	-	14	4-Φ14	170	120	-	-	-	-
20	150	105	75	55	-	14	4-Φ14	190	140	-	-	-	-
25	160	115	85	65	-	14	4-Φ14	205	160	-	-	-	-
32	180	135	100	78	-	16	4-Φ18	270	180	-	-	-	-
40	200	145	110	85	-	16	4-Φ18	310	200	590	595	365	DZW10
50	250	160	125	100	-	16	4-Φ18	358	240	590	653	365	DZW10
65	270	180	145	120	-	18	4-Φ18	373	240	590	665	365	DZW10
80	280	195	160	135	-	20	8-Φ18	435	280	590	725	365	DZW10
100	300	215	180	155	-	20	8-Φ18	500	300	590	787	365	DZW15
125	325	245	210	185	-	22	8-Φ18	614	320	590	934	365	DZW20
150	350	280	240	210	-	24	8-Φ23	674	320	590	955	365	DZW20
200	400	335	295	265	-	26	12-Φ23	818	400	590	1105	365	DZW20
250	450	405	355	320	-	30	12-Φ25/26	969	450	810	1343	470	DZW30
300	500	460	410	375	-	30	12-Φ25/26	1145	500	810	1516	470	DZW30
350	550	520	470	435	-	34	16-Φ25/26	1280	500	810	1678	470	DZW45
400	600	580	525	485	-	36	16-Φ30	1452	560	830	1849	550	DZW90
450	650	640	585	545	-	40	20-Φ30	1541	600	830	1937	550	DZW120
500	700	705	650	608	-	44	20-Φ34	1676	640	830	2234	550	DZW120
600	800	840	770	718	-	48	20-Φ41/36	1874	720	870	2432	320	DZW180
700	900	910	840	788	-	50	24-Φ41/36	2083	800	870	2489	320	DZW250
800	1000	1020	950	898	-	52	24-Φ41	2400	950	1170	2643	570	DZW250
900	1100	1120	1050	998	-	54	28-Φ41	2950	1000	1170	2935	570	DZW350
1000	1200	1255	1170	1110	-	56	28-Φ48/42	3245	1000	1170	3410	570	DZW500
1200	1015	1485	1390	1325	-	58	32-Φ54/48	4110	1000	1170	4275	570	DZW500
1400	1080	1685	1590	1525	-	60	36-Φ48/54	4980	1000	1170	5180	570	DZW500

Flanged Gate Valve

Unit:mm

DN	L	D	D1	D2	D6	b	N-Φd	H	D0	L2	H1	DA	Electric Actuator Code
15	130	95	65	45	-	16	4-Φ14	172	120	-	-	-	-
20	150	105	75	55	-	16	4-Φ14	191	140	-	-	-	-
25	160	115	85	65	-	16	4-Φ14	205	160	-	-	-	-
32	180	135	100	78	-	18	4-Φ18	270	180	-	-	-	-
40	200	145	110	85	-	18	4-Φ18	300	200	590	595	365	DZW10
50	250	160	125	100	-	20	4-Φ18	357	240	590	653	365	DZW10
65	270	180	145	120	-	22	8-Φ18	376	240	590	665	365	DZW10
80	280	195	160	135	-	22	8-Φ18	434	280	590	725	365	DZW15
100	300	230	190	160	-	24	8-Φ23	502	300	590	787	365	DZW20
125	325	270	220	188	-	28	8-Φ25/26	613	320	590	902	365	DZW20
150	350	300	250	218	-	30	8-Φ25/26	675	320	590	955	365	DZW20
200	400	360	310	278	-	34	12-Φ25/26	819	400	810	1105	470	DZW30
250	450	425	370	332	-	36	12-Φ30	968	450	810	1343	470	DZW30
300	500	485	430	390	-	40	16-Φ30	1144	500	810	1516	470	DZW60
350	550	550	490	448	-	44	16-Φ34	1280	500	830	1678	550	DZW90
400	600	610	550	505	-	48	16-Φ34/36	1451	560	830	1849	550	DZW120
450	650	660	600	555	-	50	20-Φ34/36	1542	600	830	1937	550	DZW120
500	700	730	660	610	-	52	20-Φ41/36	1678	640	870	2234	320	DZW180
600	800	840	770	718	-	56	20-Φ41	1875	720	870	2432	320	DZW250
700	900	955	875	815	-	60	24-Φ48/42	2082	800	870	2489	320	DZW500
800	1000	1070	990	930	-	64	24-Φ48	2403	950	1170	2643	570	DZW500
900	1100	1180	1090	1025	-	66	28-Φ54/48	2952	1000	1170	2935	570	DZW800
1000	1200	1305	1210	1140	-	68	28-Φ58	3244	1000	1170	3410	570	DZW800
1200	1015	1525	1420	1350	-	72	32-Φ58	4100	1000	1170	4275	570	DZW800
1400	1080	1750	1640	1560	-	78	36-Φ65	5020	1000	1170	5212	570	DZW800

Unit:mm

DN	L	D	D1	D2	D6	b	N-Φd	H	D0	L2	H1	DA	Electric Actuator Code
15	130	95	65	45	40	16	4-Φ14	134	120	-	-	-	-
20	150	105	75	55	51	16	4-Φ14	188	140	-	-	-	-
25	160	115	85	65	58	16	4-Φ14	206	140	-	-	-	-
32	180	135	100	78	66	18	4-Φ18	272	180	-	-	-	-
40	200	145	110	85	76	18	4-Φ18	322	180	590	630	365	DZW10
50	250	160	125	100	88	20	4-Φ18	370	240	590	691	365	DZW10
65	280	180	145	120	110	22	8-Φ18	394	280	590	711	365	DZW10
80	310	195	160	135	121	22	8-Φ18	455	300	590	775	365	DZW15
100	350	230	190	160	150	24	8-Φ23	550	320	590	871	365	DZW20
125	400	270	220	188	176	28	8-Φ25	636	350	590	948	365	DZW20
150	450	300	250	218	204	30	8-Φ25	706	400	810	1028	470	DZW30
200	550	375	320	282	260	38	12-Φ30	859	450	810	1325	470	DZW30
250	650	445	385	345	313	42	12-Φ34	1016	560	810	1400	470	DZW45
300	750	510	450	408	364	46	16-Φ34	1200	640	830	1653	550	DZW60
350	850	570	510	465	422	52	16-Φ34	1340	640	830	1791	550	DZW90
400	950	655	585	535	474	58	16-Φ41	1495	720	870	2092	320	DZW120
450	1050	680	610	560	524	60	20-Φ41	1581	800	-	-	-	-
500	1150	755	670	612	576	62	20-Φ48	1790	950	870	2465	320	DZW250
600	1350	890	795	730	676/678	62	20-Φ54/48	2035	950	1170	-	570	DZW350
700	1450	995	900	835	778/768	68	24-Φ48/54	2525	950	1170	-	570	DZW500
800	1650	1135	1030	960	883/876	76	24-Φ58	2980	950	1170	-	570	DZW500

Unit:mm

DN	L	D	D1	D2	D6	b	N-Φd	H	D0	L2	H1	DA	Electric Actuator Code
15	170	105	75	55	40	18	4-Φ14	142	160	-	-	-	-
20	190	125	90	68	51	20	4-Φ18	142	160	-	-	-	-
25	210	135	100	78	58	22	4-Φ18	214	200	-	-	-	-
32	230	150	110	82	66	24	4-Φ23	269	200	-	-	-	-
40	240	165	125	95	76	24	4-Φ23	343	240	590	665	365	DZW10
50	250	175	135	105	88	26	4-Φ23	370	240	590	790	365	DZW10
65	280	200	160	130	110	28	8-Φ23	396	280	590	840	365	DZW10
80	310	210	170	140	121	30	8-Φ23	458	300	590	890	365	DZW20
100	350	250	200	168	150	32	8-Φ25	553	300	590	1020	365	DZW20
125	400	295	240	202	176	36	8-Φ30	638	350	590	1100	365	DZW30
150	450	340	280	240	204	38	8-Φ34	718	400	810	1290	470	DZW30
200	550	405	345	300	260	44	12-Φ34	873	450	810	1470	470	DZW60
250	650	470	400	352	313	48	12-Φ36/41	1050	560	830	1500	550	DZW90
300	750	530	460	412	364	54	16-Φ36/41	1203	640	830	1820	550	DZW90
350	850	595	525	475	422	60	16-Φ41	1394	720	870	2216	320	DZW120
400	950	670	585	525	474	66	16-Φ48/42	1645	800	870	2838	320	DZW180
500	1150	800	705	640	576	70	20-Φ54/48	2285	950	1170	3320	570	DZW250
600	1350	930	820	750	676/678	76	20-Φ58	2610	950	1170	3684	570	DZW500

Description: Manual, pneumatic, hydraulic, electric and other related connection sizes are the same; In addition, our company can customize the production of non-standard sizes of other standards and special materials products according to customer requirements.

Flanged Gate Valve

Unit:mm

DN	L	D	D1	D2	D6	b	N-Φd	H	D0	L2	H1	DA	Electric Actuator Code
20	150	105	75	55	-	14	4-Φ14	320	140	-	-	-	-
25	160	115	85	65	-	14	4-Φ14	350	160	-	-	-	-
32	180	135	100	78	-	16	4-Φ18	385	180	-	-	-	-
40	200	145	110	85	-	16	4-Φ18	420	200	590	595	365	DZW10
50	250	160	125	100	-	16	4-Φ18	540	240	590	653	365	DZW10
65	265	180	145	120	-	18	4-Φ18	610	240	590	665	365	DZW10
80	280	195	160	135	-	20	8-Φ18	690	280	590	725	365	DZW10
100	300	215	180	155	-	20	8-Φ18	780	300	590	787	365	DZW15
125	325	245	210	185	-	22	8-Φ18	930	320	590	934	365	DZW20
150	350	280	240	210	-	24	8-Φ23	980	350	590	955	365	DZW20
200	400	335	295	265	-	26	12-Φ23	1180	400	590	1105	365	DZW20
250	450	405	355	320	-	30	12-Φ25	1390	450	810	1343	470	DZW30
300	500	460	410	375	-	30	12-Φ25	1620	500	810	1516	470	DZW30
350	550	520	470	435	-	34	16-Φ25	1810	500	810	1678	470	DZW45
400	600	580	525	485	-	36	16-Φ30	1970	550	830	1849	550	DZW90
450	650	640	585	545	-	40	20-Φ30	1541	600	830	1937	550	DZW120
500	700	705	650	608	-	44	20-Φ34	1676	640	830	2234	550	DZW120
600	800	840	770	718	-	48	20-Φ41/36	1874	720	870	2432	320	DZW180

Unit:mm

DN	L	D	D1	D2	D6	b	N-Φd	H	D0	L2	H1	DA	Electric Actuator Code
20	150	105	75	55	-	16	4-Φ14	320	140	-	-	-	-
25	160	115	85	65	-	16	4-Φ14	350	160	-	-	-	-
32	180	135	100	78	-	18	4-Φ18	385	180	-	-	-	-
40	200	145	110	85	-	18	4-Φ18	420	200	590	595	365	DZW10
50	250	160	125	100	-	20	4-Φ18	540	240	590	653	365	DZW10
65	265	180	145	120	-	22	4-Φ18	610	240	590	665	365	DZW10
80	280	195	160	135	-	22	8-Φ18	690	280	590	725	365	DZW15
100	300	230	190	160	-	24	8-Φ23	780	300	590	787	365	DZW20
125	325	270	220	188	-	28	8-Φ25	930	300	590	902	365	DZW20
150	350	300	250	218	-	30	8-Φ25	980	320	590	955	365	DZW20
200	400	360	310	278	-	34	12-Φ25	1180	360	810	1105	470	DZW30
250	450	425	370	332	-	36	12-Φ30	1390	400	810	1343	470	DZW30
300	500	485	430	390	-	40	16-Φ30	1620	450	810	1516	470	DZW60
350	550	550	490	448	-	44	16-Φ34	1810	500	830	1678	550	DZW90
400	600	610	550	505	-	48	16-Φ34	1990	560	830	1849	550	DZW120
450	650	660	600	555	-	50	20-Φ34/36	1542	600	830	1937	550	DZW120
500	700	730	660	610	-	52	20-Φ41/36	1678	640	870	2234	320	DZW180
600	800	840	770	718	-	56	20-Φ41	1875	720	870	2432	320	DZW250

Unit:mm

DN	L	D	D1	D2	D6	b	N-Φd	H	D0	L2	H1	DA	Electric Actuator Code
20	150	105	75	55	51	16	4-Φ14	330	140	-	-	-	-
25	160	115	85	65	58	16	4-Φ14	360	160	-	-	-	-
32	180	135	100	78	66	18	4-Φ18	440	180	-	-	-	-
40	200	145	110	85	76	18	4-Φ18	455	200	590	630	365	DZW10
50	250	160	125	100	88	20	4-Φ18	575	240	590	691	365	DZW10
65	280	180	145	120	110	22	8-Φ18	635	240	590	711	365	DZW10
80	310	195	160	135	121	22	8-Φ18	715	280	590	775	365	DZW15
100	350	230	190	160	150	24	8-Φ23	815	300	590	871	365	DZW20
125	400	270	220	188	176	28	8-Φ25	965	360	590	948	365	DZW20
150	450	300	250	218	204	30	8-Φ25	1025	400	810	1028	470	DZW30
200	550	375	320	282	260	38	12-Φ30	1225	450	810	1325	470	DZW30
250	650	445	385	345	313	42	12-Φ34	1440	560	810	1400	470	DZW45
300	750	510	450	408	364	46	16-Φ34	1665	640	830	1653	550	DZW60
350	850	570	510	465	422	52	16-Φ34	1880	720	830	1791	550	DZW90
400	950	655	585	535	474	58	16-Φ41	2050	800	870	2092	320	DZW120
450	1050	680	610	560	524	60	20-Φ41	1581	800	-	-	-	-
500	1150	755	670	612	576	62	20-Φ48	1790	950	870	2465	320	DZW250
600	1350	890	795	730	676/678	62	20-Φ54/48	2035	950	1170	-	570	DZW350

Technique Standard

Design Standard	GB/T 12238	API 609
Face to Face Dimension (Flange Connecting)	GB/T 12221	ANSI B16.10
Connecting Flange Size	GB/T 9113, JB/T 79	ANSI B16.5 (2~~24") / ANSI B16.47 (28~~30")
Test & Inspection	JB/T 9092	API 598

Form of Main Parts Materials

Name of Parts	C	P	R
Body	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
Screw Cap	35	304	304
Screw	35	304	304
Shut-off Device	35	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
Stem	WCB	1Cr18Ni9Ti	1Cr18Ni9Ti
Gasket	Stainless Steel + Graphite, PTFE	Stainless Steel + Graphite, PTFE	Stainless Steel + Graphite, PTFE
Cover	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
Bonnet	35	304	304
Lifting Ring Screw	35	304	304
Screw Cap	35	304	304
Screw	35	304	304
Packing	Graphite, PTFE	Graphite, PTFE	Graphite, PTFE
Packing Gland	WCB	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
Packing Plate	WCB	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
Screw Cap	304	304	304

Pneumatic Gate Valve Standaed Specification

Item	Specification
Model	ZTZ641(O)H(Y)
Bore	DN50–800 mm
Pressure	1.0, 1.6, 2.5, 4.0 MPa; 150Lb, 300Lb
Dimension Standard	GB Standard, American Standard
Body Material	Cast Iron, Carbon Steel (WCB), Stainless Steel (CF8, CF8M, CF3, CF3M)
Seat Material	Metal Sealed (H, Y)
Mode of Action	Double-acting or Single-acting (spring return) pneumatic actuator
Control	Switch Type, Adjust Type, Intelligent
Selection of Accessories	Solenoid valve, Locator, Limit switch, F.R.L. Combination Unit, Manual Device

Electric Gate Valve Standaed Specification

Item	Specification
Model	ZTZ941(O)H(Y)
Bore	DN50–800 mm
Pressure	1.0, 1.6, 2.5, 4.0 MPa; 150Lb, 300Lb
Dimension Standard	GB Standard, American Standard
Body Material	Cast Iron, Carbon Steel (WCB), Stainless Steel (CF8, CF8M, CF3, CF3M)
Seat Material	Metal Sealed (H, Y)
Mode of Action	Power-on type, Power-off type
Control	Switch Type, Adjust Type, Intelligent

Flanged Gate Valve

Main Outline and Connecting Size

ZT6S41(0)H(Y)-PN16(1.6MPa)

DN	L	~H	H1	H2	Φd0	D	D1	D2	C	f	n-Φd	Pneumatic Actuator (Double Action)
50	250	790	420	840	180	165	125	99	20	3	4-Φ18	ZTCL-100
65	265	805	435	865	180	185	145	118	20	3	4-Φ18	ZTCL-130
80	280	910	460	990	200	200	160	132	20	3	8-Φ18	ZTCL-140
100	300	1050	560	1150	250	220	180	156	22	3	8-Φ18	ZTCL-160
150	350	1240	660	1390	320	285	240	211	24	3	8-Φ22	ZTCL-200
200	400	1520	810	1720	400	340	295	266	24	3	12-Φ22	ZTCL-220
250	450	1700	930	1950	400	405	355	319	26	3	12-Φ26	ZTCL-250
300	500	1930	1090	2230	450	460	410	370	28	4	12-Φ26	ZTCL-300
350	550	2160	1230	2510	450	520	470	429	30	4	16-Φ26	ZTCL-350
400	600	2330	1360	2730	500	580	525	480	32	4	16-Φ30	ZTCL-400
450	650	2540	1510	2990	500	640	585	548	34	4	20-Φ30	ZTCL-300(SG)
500	700	2750	1660	3250	550	715	650	609	36	4	20-Φ33	ZTCL-350(SG)
600	800	3080	1910	3680	550	840	770	720	38	5	20-Φ36	ZTCL-400(SG)
700	900	3570	2200	4270	600	910	840	794	40	5	24-Φ36	ZTCL-450(SG)
800	1000	3830	2460	4530	600	1025	950	901	42	5	24-Φ39	ZTCL-550(SG)

ZT6S41(0)H(Y)-PN25(2.5MPa)

DN	L	~H	H1	~H2	Φd0	D	D1	D2	C	f	n-Φd	Pneumatic Actuator (Double Action)
50	250	790	420	840	180	165	125	99	20	3	4-Φ18	ZTCL-130
80	280	910	460	990	200	200	160	132	24	3	8-Φ18	ZTCL-140
100	300	1050	560	1150	250	235	190	156	24	3	8-Φ22	ZTCL-160
150	350	1240	660	1390	320	300	250	211	28	3	8-Φ26	ZTCL-180
200	400	1520	810	1720	400	360	310	274	30	3	12-Φ26	ZTCL-250
250	450	1700	930	1950	400	425	370	330	32	3	12-Φ30	ZTCL-300
300	500	1930	1090	2230	450	485	430	389	34	4	16-Φ30	ZTCL-350
350	550	2160	1230	2510	450	555	490	448	38	4	16-Φ33	ZTCL-400
400	600	2330	1360	2730	500	620	550	503	40	4	16-Φ36	ZTCL-500
450	650	2540	1510	2990	500	670	600	548	42	4	20-Φ36	ZTCL-400(SG)
500	700	2750	1660	3250	550	730	660	609	44	4	20-Φ36	ZTCL-450(SG)
600	800	3080	1910	3680	550	845	770	720	46	4	20-Φ39	ZTCL-500(SG)
700	900	3570	2200	4270	600	960	875	820	50	5	24-Φ42	ZTCL-550(SG)
800	1000	3830	2460	4530	600	1080	990	928	54	5	24-Φ48	ZTCL-650(SG)

ZT6S41(0)H(Y)-PN40(4.0MPa)

DN	L	~H	H1	~H2	Φd0	D	D1	D2	C	D3×x	f	n-Φd	Pneumatic Actuator (Double Action)
50	250	790	420	840	180	165	125	99	20	88×4	3	4-Φ18	ZTCL-160
80	310	910	460	990	200	200	160	132	24	121×4	3	8-Φ18	ZTCL-180
100	350	1050	560	1150	250	235	190	156	24	150×4.5	3	8-Φ22	ZTCL-200
150	450	1240	660	1390	320	300	250	211	28	204×4.5	3	8-Φ26	ZTCL-250
200	550	1520	810	1720	400	375	320	284	34	260×4.5	3	12-Φ30	ZTCL-220(SG)
250	650	1700	930	1950	400	450	385	315	38	313×4.5	3	12-Φ33	ZTCL-300(SG)
300	750	1930	1090	2230	450	515	450	409	42	364×4.5	4	16-Φ33	ZTCL-350(SG)
350	850	2160	1230	2510	450	580	510	465	46	422×5	4	16-Φ36	ZTCL-400(SG)
400	950	2330	1360	2730	500	660	585	535	50	474×5	4	16-Φ39	ZTCL-450(SG)
450	1050	2540	1510	2990	500	685	610	560	50	524×5	4	20-Φ39	ZTCL-500(SG)
500	1150	2750	1660	3250	550	755	670	615	52	576×5	4	20-Φ42	ZTCL-600(SG)
600	1350	3080	1910	3680	550	890	795	735	60	676×5	5	20-Φ48	ZTCL-650(SG)

Manufacturing Process

Step 1: Order and Design

According to customer requirements, pressure rating, size, material, and applicable standards are confirmed first. The engineering team prepares drawings and production plans for the flanged gate valve, including body structure, flange dimensions, sealing type, and actuator requirements.

Flanged Gate Valve

Step 2: Forging & Casting

The main pressure-bearing parts such as valve body, bonnet, and wedge are produced by casting or forging according to the material specification. For a flanged gate valve, special attention is paid to the strength of the flange ends and the internal flow passage to ensure reliable performance under working pressure.

Flanged Gate Valve

Step 3: Machining

After raw blanks are inspected, precision machining is carried out on the body cavity, flange faces, stem hole, sealing surfaces, and connection threads. Accurate machining is very important for the flanged gate valve to guarantee proper sealing performance and smooth opening and closing.

Flanged Gate Valve

Step 4: Assembly

All qualified parts are cleaned and assembled, including valve body, bonnet, wedge, stem, seat, gasket, bolts, and handwheel or actuator. During flanged gate valve assembly, alignment of the stem and wedge must be carefully controlled to ensure stable operation and tight shut-off.

Flanged Gate Valve

Step 5: Testing & Quality Assurance

Each valve undergoes strict inspection and testing, such as visual inspection, dimension check, shell pressure test, and seat leakage test. For every flanged gate valve, testing is carried out according to relevant standards to confirm safety, sealing reliability, and overall quality.

Flanged Gate Valve

Step 6: Painting and Finishing

After final inspection, the valve surface is cleaned, painted, marked, and packed. Nameplate information, size, pressure class, heat number, and traceability details are checked before shipment to ensure the product is ready for delivery.

Flanged Gate Valve

Applications

Used on pipelines in various operating conditions across the petroleum, chemical, pharmaceutical, fertilizer, and power industries, where operating temperatures range from -29°C to 600°C, to shut off or open the flow of the pipeline medium; not intended for regulation or throttling. Suitable media include water, oil, steam, and acidic media.

These valves are widely used in:

Oil and Gas

Chemical Processing

Power Plants

Water Treatment

Metallurgy and Mining

Agriculture and Irrigation

Factory Environment

Factory Production Line

Material Storage

Quality Control

Assembly Workshop

Quality Control

Assembly Workshop

Why Choose Us

Superior Quality

Our valves are manufactured using premium materials and undergo rigorous quality testing to ensure reliable performance in demanding industrial applications.

Advanced Technology

Equipped with state-of-the-art CNC machining centers and precision manufacturing equipment, we deliver valves with exceptional accuracy and consistency.

Competitive Pricing

Through optimized manufacturing processes and bulk material procurement, we offer high-quality valves at competitive prices without compromising on quality.

Expert Support

Our experienced technical team provides comprehensive support from product selection to after-sales service, ensuring optimal valve performance for your specific application.

Request a Quote

Product overview

Product Features

Administer Standard

Pressure Test

Main Part Materials and Property

Main Dimension

Technique Standard

Form of Main Parts Materials

Pneumatic Gate Valve Standaed Specification

Electric Gate Valve Standaed Specification

Main Outline and Connecting Size

Manufacturing Process

Applications

Factory Environment

Why Choose Us

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