Application of Standards

① Design and Manufacturing of Cast Steel Gate Valves in Accordance with GB/T12234
② Forged steel gate valve design and manufacture according to: JB/T 7746
③ Inspection and testing shall comply with GB/T 13927 and GB/T 26480.
④ Flange connections comply with the standards JB/T79, HG/T20592, and GB/T9113.
⑤ Welded end: GB/T12224
⑥ butt and socket welding end: JB/T 7746
⑦ Structure length: GB/T12221
⑧ Temperature and pressure rating: GB/T12224

Product specifications

① Main material: carbon steel, stainless steel, alloy steel
② Nominal diameter: DN15 to DN1000
③ Pressure range: 1.0MPa~16.0MPa
④ Operating temperature: -29℃~+600℃
⑤ Drive modes: manual, bevel gear, electric, pneumatic, hydraulic
⑥ Application scope: It can be used in water supply, sewage, construction, food, electric power, medicine, metallurgy, light textile, energy and other fluid pipelines for cutting off, regulating and throttling.

Main Components Material

		Material
Order number	Part name	Stainless steel	Cast steel
1	Valve body	CF8	WCB
2	Flashboard	CF8	WCB+13Cr
3	Valve stem	304	2Cr13
4	Pad	PTFE	304+ graphite
5	Double-screw bolt	A193 B8	A193 B7
6	Nut	A1948	A1942H
7	Bonnet	CF8	WCB
8	Filling	PTFE	Black lead
9	Lateral pin	35	35
10	Stuffing box gland	CF8	WCB
11	Dog bolt	A193 B8	A193 B7
12	Nut	A1948	A1942H
13	Support	CF8	WCB
14	Valve-stem nut	Copper alloy	Copper alloy
15	Grease cup	Copper alloy	Copper alloy
16	Gland nut	35	35
17	Locknut	35	35
18	Hand wheel	KTH300-08	KTH300-08

product-326-474

GB Gate Valve

National standard gate valve

product-879-400

Z41W/H

Z541W/H

Z941W/H

RTJ(Ring j)uEnd(nctio)n

Welding(BW End) of

Main connection size

PN1.6MPa

Size	DN	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350	400	450	500	600	700
L/L1	mm	130	150	160	180	200	250	265	280	300	325	350	400	450	500	550	600	650	700	800	900
H	mm	175	180	210	210	340	345	370	420	480	520	605	818	1225	1415	1630	1780	2050	2181	2599	2845
W	mm	180	180	200	200	200	240	240	280	320	360	360	400	450	500	500	600	720	720	720	720

PN2.5MPa

Size	DN	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350	400	450	500	600	700
L/L1	mm	130	150	160	180	200	250	265	280	300	325	350	400	450	500	550	600	650	700	800	900
H	mm	175	180	210	210	350	358	373	435	500	614	674	818	1225	1415	1630	1780	2050	2181	2599	2845
W	mm	180	180	200	200	200	240	240	280	320	360	360	400	450	500	500	600	720	720	720	720

PN4.0MPa

Size	DN	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350	400	450	500
L/L1	mm	130	150	160	180	200	250	280	310	350	400	450	550	650	750	850	950	1050	1150
H	mm	175	180	210	210	350	386	430	498	558	650	720	1086	1298	1530	1750	1900	2100	2250
W	mm	180	180	200	200	200	240	240	280	320	360	360	450	560	560	500	600	720	720

PN6.4~10.0MPa

Size	DN	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350	400
L/L1	mm	170	190	210	230	240	250	280	310	350	400	450	550	650	750	850	950
H	mm	175	180	210	210	350	358	373	435	500	614	674	818	1225	1415	1630	1780
W	mm	120	120	140	160	200	240	280	320	360	400	400	450	560	640	800	800

PN16.0MPa

Size	DN	15	20	25	32	40	50	65	80	100	125	150	200
L/L1	mm	170	190	210	230	260	300	340	390	450	525	600	750
H	mm	230	260	280	312	350	512	560	584	613	723	820	990
W	mm	200	200	280	160	200	240	280	320	450	560	640	720