Hard-seal Rising Stem Flanged Gate Valve

The hard-sealed, rising-stem, flanged gate valve features a metal-to-metal hard-sealing design; the gate disc and valve seat can be configured—depending on requirements—with either integral sealing surfaces or welded hard alloy overlays. Utilizing a rising-stem structure, the valve stem moves synchronously with the vertical travel of the gate disc, allowing the valve's open or closed status to be visually determined by the height of the stem.

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Specification
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Design Features:
Flanged ends:
JB/T 79-2015, GB/T 9124.1-2019
Test & inspection:
GB/T 26480-2011, GB/T 13927-2022
JB/T 9092-1999

Main parts and materials

ITEM

PART

MAIN MATERIAL

Body

CF8 CF3 CF8M CF3M WCB

Bonnet

CF8 CF3 CF8M CF3M WCB

Wedge

CF8 CF3 CF8M CF3M WCB

Stem

F304 F304L F316 F316L 2Cr13

Stem Nut

Copper alloy

Packing

PTFE Flexible Graphite

Gasket

PTFE Spiral Wound Gasket

Gland

CF8 CF3 CF8M CF3M WCB

Bolt

B8 B7

Nut

A194-82H

Handwheel

QT400-17

Main dimensions(PN10) JB/T 79-2015

DN	L	D	D1	D2	n-Φd	D0

40	165	145	110	85	4-Φ18	160
50	180	160	125	100	4-Φ18	200
65	195	180	145	120	4-Φ18	220
80	210	195	160	135	4-Φ18	240
100	230	215	180	155	8-Φ18	260
125	255	245	210	185	8-Φ18	300
150	280	280	240	210	8-Φ23	320
200	330	335	295	265	8-Φ23	350
250	380	390	350	320	12-Φ23	450
300	420	440	400	368	12-Φ23	500
350	450	500	460	428	16-Φ23	500
400	480	565	515	482	16-Φ25	550
450	510	615	565	532	20-Φ25	600
500	540	670	620	585	20-Φ25	600
600	600	780	725	685	20-Φ30	700

Main dimensions(PN16) GB/T 9124.1-2019

DN	L	D	D1	D2	b-f	n-Φd	D0
15	130	95	65	45	16-2	4-Φ14	120
20	150	105	75	58	18-2	4-Φ14	140
25	160	115	85	68	18-2	4-Φ14	140
32	180	140	100	78	18-2	4-Φ18	160
40	200	150	110	88	18-3	4-Φ18	180
50	250	165	125	102	18-3	4-Φ18	220
65	265	185	145	122	18-3	8-Φ18	240
80	280	200	160	138	20-3	8-Φ18	260
100	300	220	180	158	20-3	8-Φ18	280
125	325	250	210	188	22-3	8-Φ18	320
150	350	285	240	212	22-3	8-Φ22	350
200	400	340	295	268	24-3	12-Φ22	400
250	450	405	355	320	26-3	12-Φ26	450
300	500	460	410	378	28-4	12-Φ26	500
350	550	520	470	438	30-4	16-Φ26	550

400	600	580	525	490	32-4	16-Φ30	600
450	650	640	585	550	40-4	20-Φ30	650
500	700	715	650	610	44-4	20-Φ33	700
600	800	840	770	725	54-5	20-Φ36	800

Main dimensions(PN25) GB/T 9124.1-2019

DN	L	D	D1	D2	b-f	n-Φd	D0
15	130	95	65	45	16-2	4-Φ14	120
20	150	105	75	58	18-2	4-Φ14	140
25	160	115	85	68	18-2	4-Φ14	160

32	180	140	100	78	18-2	4-Φ18	180

40	200	150	110	88	18-3	4-Φ18	200

50	250	165	125	102	20-3	4-Φ18	220

65	265	185	145	122	22-3	8-Φ18	240

80	280	200	160	138	24-3	8-Φ18	260
100	300	235	190	162	24-3	8-Φ22	280
125	325	270	220	188	26-3	8-Φ26	320

150	350	300	250	218	28-3	8-Φ26	320

200	400	360	310	278	30-3	12-Φ26	400

250	450	425	370	335	32-3	12-Φ30	450
300	500	485	430	395	34-4	16-Φ30	500

350	550	555	490	450	38-4	16-Φ33	600
400	600	620	550	505	40-4	16-Φ36	650

450	650	670	600	555	46-4	20-Φ36	650
500	700	730	660	615	48-4	20-Φ36	700

600	800	845	770	720	58-5	20-Φ39	800

Main dimensions GB/T 9124.1-2019

DN	N40								PN63
	L	D	D1	D2	D6	b-f	f2	n-Φd	L	D	D1	D2	D6	b-f	f2	n-Φd
15	130	95	65	45	40	16-2	4	4-Φ14	170	105	75	55	40	20-2	4	4-Φ14
20	150	105	75	58	51	18-2	4	4-Φ14	190	130	90	68	51	22-2	4	4-Φ18

25	160	115	85	68	58	18-2	4	4-Φ14	210	140	100	78	58	24-2	4	4-Φ18
32	180	140	100	78	66	18-2	4	4-Φ18	230	155	110	82	66	26-2	4	4-Φ22
40	200	150	110	88	76	18-3	4	4-Φ18	240	170	125	95	76	26-3	4	4-Φ22
50	250	165	125	102	88	20-3	4	4-Φ18	250	180	135	105	88	26-3	4	4-Φ22
65	280	185	145	122	110	22-3	4	8-Φ18	280	205	160	130	110	26-3	4	8-Φ22
80	310	200	160	138	121	24-3	4	8-Φ18	310	215	170	140	121	28-3	4	8-Φ22
100	350	235	190	162	150	24-3	4.5	8-Φ22	350	250	200	168	150	30-3	4.5	8-Φ26
125	400	270	220	188	176	26-3	4.5	8-Φ26	400	295	240	202	176	34-3	4.5	8-Φ30
150	450	300	250	218	204	28-3	4.5	8-Φ26	450	345	280	240	204	36-3	4.5	8-Φ33
200	550	375	320	285	260	34-3	4.5	12-Φ30	550	415	345	300	260	42-3	4.5	12-中36
250	650	450	385	345	313	38-3	4.5	12-Φ33	650	470	400	352	313	46-3	4.5	12-Φ36
300	750	515	450	410	364	42-4	4.5	16-Φ33	750	530	460	412	364	52-4	4.5	16-Φ36
350	850	580	510	465	422	46-4	5	16-Φ36	850	600	525	475	422	56-4	5	16-Φ39
400	950	660	585	535	474	50-4	5	16-Φ39	950	670	585	525	474	60-4	5	16-Φ42
450	1050	685	670	560	524	57-4	5	20-Φ39	/	/	/	/	/	/	/	/
500	1150	755	795	615	576	57-4	5	20-Φ42	/	/	/	/	/	/	/	/

The dimensions above are for reference only.

Zhongchi Valve Group Co., Ltd. was established in April 2008. The company is a valve manufacturing enterprise that integrates design, development, production, and sales. It is located in the Binhai Industrial Park of Wenzhou Economic and Technological Development Zone.
The company adheres to the corporate tenet of "quality-oriented, innovation-driven, management-efficient, and service-focused", and upholds the business philosophy of "service-oriented and integrity-abiding". We provide customers with reliable quality assurance through advanced technology and scientific management, offers services with a complete range of products and a short delivery time, and strives to achieve the corporate goal of "building an excellent enterprise and creating a brand in the industry". The company has successively obtained ISO9001 international quality management system certification, ISO14001 environmental management system certification, ISO45001 occupational health and safety management system certification, special equipment manufacturing production license TS certification, CE certification, EAC certification, API607 fire protection certification, and has been recognized as a small and medium-sized technology enterprise in Zhejiang Province and a national high-tech enterprise.
The company's main products include ball valves, gate valves, globe valves, check valves, filters, butterfly valves, etc. These products are widely used in various industries such as petroleum, chemical, natural gas, light industry, electric power, pharmaceuticals, dyes, metallurgy, fiber, leather making, textile, food, military, construction engineering, refrigeration, water supply, and more.