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Model: NHZ

Cast Basalt Wear-Resisting Knife Gate Valve (Thin Slurry Valve, L 80-170mm)

• Nominal Diameter: DN65-DN400
• Pressure Rating: PN0.6-PN1.6 MPa
• Flange End: GB/T 9124, ANSI B16.5
• Suitable Media: Mineral Powder, Coal Powder, Slurry, ect.
• Operating Temperature: -40 to 120℃
• Method of Operation: Manual, Electric, Pneumatic, Hydraulic
• Inspection & Testing: GB/T 13927, API 598

• Excellent wear resistance
  The valve uses highly wear-resistant materials such as alloy steel together with fused cast basalt lining to improve durability under abrasive slurry conditions. Its service life can exceed that of conventional valves by more than ten times.
• Compact ultra-thin structure
  The slim valve body design reduces installation space requirementswhile helping simplify pipeline layouts in confined working environments.
• Reliable sealing performance
  The valve combines a patented sealing structure with elastic sealing strips and self-cleaning wear-resistant materials to help reduce ash or slurry buildup inside the valve and maintain stable sealing performance over long-term operation.
• Flexible operation options
  Available with manual, pneumatic, hydraulic, or electric actuation methods. Intelligent electric actuators can also be equipped for automated control systems.
• Corrosion and high-temperature resistance
  Valve body materials are available in cast steel, stainless steel, or alloy steel, making the valve suitable for high-temperature and corrosive working conditions commonly found in power plants, mining, and heavy industrial systems.

• Power generation and mining industries
  Commonly used in ash handling systems at thermal power plants and slurry conveying pipelines in mining operations where abrasive media containing solid particles can cause severe valve wear.
• Wastewater treatment and paper manufacturing
  The ultra-thin structure is suitable for compact piping systems in the paper industry, while its wear-resistant design helps handle wastewater containing fiber impurities and suspended solids.

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	10x10 Gland Packing 10×10 (mm)		1
10	Body	WCB	1
11	Wear sleeve	WCB	1

PN0.6-1.0-1.6MPa

PN	DN	NPS	L	D	D1	D2	Z-d	f	b	H
0.6MPa	65	2 1/2"	80	160	130	108	4-M12	3	16	730
	80	3"	80	190	150	124	4-M16	3	18	760
	100	4"	95	210	170	144	4-M16	3	18	800
	125	5"	95	240	200	174	8-M16	3	18	850
	150	6"	105	265	225	199	8-M16	3	20	900
	200	8"	115	320	280	254	8-M16	3	22	1000
	250	10"	125	375	335	309	12-M16	3	24	1150
	300	12"	145	440	395	363	12-M20	4	24	1300
	350	14"	155	490	445	413	12-M20	4	24	1450
	400	16"	170	540	495	463	16-M20	4	24	1600
1.0MPa	65	2 1/2"	80	185	145	118	4-M16	3	20	730
	80	3"	80	200	160	132	8-M16	3	20	760
	100	4"	95	220	180	156	8-M16	3	22	800
	125	5"	95	250	210	184	8-M16	3	22	850
	150	6"	105	285	240	211	8-M20	3	24	900
	200	8"	115	340	295	266	8-M20	3	24	1000
	250	10"	125	395	350	319	12-M20	3	26	1150
	300	12"	145	445	400	370	12-M20	4	26	1300
	350	14"	155	505	460	429	16-M20	4	26	1450
	400	16"	170	565	515	480	16-M24	4	26	1600
1.6MPa	65	2 1/2"	80	185	145	118	4-M16	3	20	730
	80	3"	80	200	160	132	8-M16	3	20	760
	100	4"	95	220	180	156	8-M16	3	22	800
	125	5"	95	250	210	184	8-M16	3	22	850
	150	6"	105	285	240	211	8-M20	3	24	900
	200	8"	115	340	295	266	12-M20	3	24	1000
	250	10"	125	405	355	319	12-M24	3	26	1150
	300	12"	145	460	410	370	12-M24	4	28	1300
	350	14"	155	520	470	429	16-M24	4	30	1450
	400	16"	170	580	525	480	16-M27	4	32	1600

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.