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Model: NZ

Cast Basalt Wear-Resisting Gate Valve (Large Diameter Fused Cast Basalt Lined Valve, 80-500mm)

• Nominal Diameter: DN80-DN500
• Pressure Rating: PN1.0-PN25 MPa
• Flange End: GB/T 9124, ANSI B16.5
• Suitable: Media Slurry
• Operating Temperature: -40 to 120℃
• Method of Operation: Manual, Electric, Pneumatic, Hydraulic
• Inspection & Testing: GB/T 13927, API 598

The cast basalt wear-resisting gate valve is designed for slurry, ash handling, and other abrasive media systems where conventional gate valves are exposed to severe wear and short service life.
The valve mainly consists of a valve body, gate plate, stem, driving mechanism, and fused cast basalt lining. The valve body is made from cast steel for reliable strength under demanding working conditions. Wear-resistant alloy or stainless-steel materials are used to manufacture the valve gate in order to handle frequent operation and abrasive media more effectively.
The fused cast basalt lining installed in its flow channel and gate sealing surfaces is the key wear-resistant component of this valve. Known for its high hardness and strong abrasion resistance, cast basalt helps significantly extend valve service life under demanding slurry conveying conditions. According to application data, the wear resistance of cast basalt is approximately 36 times higher than carbon steel and 9 times higher than manganese steel, allowing the valve to achieve a much longer operating life than conventional gate valves in abrasive media systems.

Cast basalt wear-resisting gate valves are widely used in thermal power generation, mining, metallurgy, chemical processing, and other industries exposed to abrasive media handling conditions. In ash handling systems at thermal power plants, the valve is used to control the transport of ash slurry and slag materials under continuous wear conditions. It is also commonly installed in tailings and slurry conveying pipelines in mining operations for reliable material transport and reduced wear-related shutdowns.

No.	Component	Material	Quantity
1	Connecting Flange	WCB	1
2	Deep Groove Ball Bearing		1
3	Single Direction Thrust Ball Bearing		2
4	Bearing Housing	WCB	1
5	Stem	45#	1
6	Gate	45#	1
7	Support Plate	Q235	2
8	Packing Gland	WCB	1
9	10×10 Gland Packing 10×10mm		1
10	Body	WCB	1
11	Wear sleeve	WCB	1

PN1.0MPa

Size		L		D	K	n-Ø	a	H
								Electric Operated	Manual Operated
DN	NPS	mm		mm	mm	mm	mm	mm	mm
65	2 1/2"	170		185	145	4-18	118	660	380
80	3"	189		200	160	8-18	132	690	420
100	4"	231		220	180	8-18	156	800	510
125	5"	251		250	210	8-18	184	870	580
150	6"	274		285	240	8-22	211	1040	730
175	7"	332		315	270	8-22	240	1120	800
200	8"	332		340	295	8-22	266	1190	870
225	9"	374		370	325	8-22	295	1350	1050
250	10"	374		395	350	12-22	319	1520	1120
300	12"	406		445	400	12-22	370	1580	1180
350	14"	425	450	505	460	16-22	429	1720	1330
400	16"	490		565	515	16-26	480	1910	1470
450	18"	560	546	615	565	20-26	530	2080	1630
500	20"	600		670	620	20-26	582	2280	1750
600	24"	700		780	725	20-30	682	2750	2200
700	28"	800		895	840	24-30	794	3590	2900

PN1.6MPa

Size		L		D	K	n-Ø	a	H
								Electric Operated	Manual Operated
DN	NPS	mm		mm	mm	mm	mm	mm	mm
65	2 1/2"	170		185	145	4-18	118	660	380
80	3"	189		200	160	8-18	132	690	420
100	4"	231		220	180	8-18	156	800	510
125	5"	251		250	210	8-18	184	870	580
150	6"	274		285	240	8-22	211	1040	730
175	7"	332		315	270	8-22	240	1120	800
200	8"	332		340	295	12-22	266	1190	870
225	9"	374		370	325	12-22	295	1350	1050
250	10"	374		405	355	12-26	319	1520	1120
300	12"	406		460	410	12-26	370	1580	1180
350	14"	425	450	520	470	16-26	429	1720	1330
400	16"	490		580	525	16-30	480	1910	1470
450	18"	560	546	640	585	20-30	548	2080	1630
500	20"	600		715	650	20-33	609	2280	1750
600	24"	700		840	770	20-36	720	2750	2200
700	28"	800		910	840	24-36	794	3590	2900

PN2.5MPa

Size		L		D	K	n-Ø	a	H
								Electric Operated	Manual Operated
DN	NPS	mm		mm	mm	mm	mm	mm	mm
65	2 1/2"	170		185	145	8-18	118	660	380
80	3"	189		200	160	8-18	132	690	420
100	4"	231		235	190	8-22	156	800	510
125	5"	251		270	220	8-26	184	870	580
150	6"	274		300	250	8-26	211	1040	730
175	7"	332		330	280	12-26	248	1120	800
200	8"	332		360	310	12-26	274	1190	870
125	9"	374		395	340	12-30	302	1350	1050
250	10"	374		425	370	12-30	330	1520	1120
300	12"	406		485	430	16-30	389	1580	1180
350	14"	425	450	555	490	16-33	448	1720	1330
400	16"	490		620	550	16-36	503	1910	1470
450	18"	560	546	670	600	20-36	548	2080	1630
500	20"	600		730	660	20-36	609	2280	1750
600	24"	700		845	770	20-39	720	2750	2200
700	28"	800		960	875	24-42	820	3590	2900

PN4.0MPa

Size		L	D	K	n-Ø	a	H
							Electric Operated	Manual Operated
DN	NPS	mm	mm	mm	mm	mm	mm	mm
80	3"	244	200	160	8-18	132	740	420
100	4"	283	235	190	8-22	156	790	480
125	5"	314	270	220	8-26	184	860	530
150	6"	314	300	250	8-26	211	1060	660
175	7"	374	350	295	12-30	258	1150	750
200	8"	374	375	320	12-30	284	1150	750
225	9"	403	420	355	12-33	315	1320	930
250	10"	421	450	385	12-33	345	1320	930
300	12"	475	515	450	16-33	409	1580	1130
350	14"	518	580	510	16-36	465	1640	1190
400	16"	580	660	585	16-39	535	2080	1650
450	18"	650	685	610	20-39	560	2300	1800
500	20"	720	755	670	20-42	615	2450	2200
600	24"	800	890	795	20-48	735	2850	2400

PN6.3MPa

Size		L	D	K	n-Ø	a	H
							Electric Operated	Manual Operated
DN	NPS	mm	mm	mm	mm	mm	mm	mm
80	3"	244	215	170	8-22	140	740	420
100	4"	283	250	200	8-26	168	790	480
125	5"	314	295	240	8-30	202	860	530
150	6"	314	345	280	8-33	240	1060	660
175	7"	374	375	310	12-33	270	1150	750
200	8"	374	415	345	12-36	300	1150	750
225	9"	403	440	370	12-36	325	1320	930
250	10"	421	470	400	12-36	352	1320	930
300	12"	475	530	460	16-36	412	1580	1130
350	14"	518	600	525	16-39	475	1640	1190

Note:
1. Valve drawings shown are for reference only.
2. Product specifications and technical data may change due to design improvements or product updates. Please contact our sales team for the latest information.
3. Custom designs and specifications are available upon request.