Pneumatic Knife Gate Valve

In modern industrial processes, controlling the flow of liquids, powders, and slurries is essential. Among the many types of valves, the Pneumatic Knife Gate Valve stands out for its ability to handle viscous, abrasive, or particle-laden materials efficiently. Unlike manual or hydraulic valves, pneumatic knife gate valves offer fast, reliable, and automated operation, making them indispensable in industries like chemical processing, mining, pulp and paper, and wastewater treatment.

Technique norm
Design Basis	Standard (GB)	Standard (ANSI)
Design standard	JB/T8691-1998	ANSI B16.34
Connecting Flange Size	GB/9113、JB/T79	ANSI B16.5
Test & inspection	JB/T9092	API 598

Note: The structural length and connecting flange size of Knife-shaped gate valve series can be designed and manufactured as per users' requirements.

Form of Main Parts Materials
No.	Name of parts	Material - C	Material - P	Material - R
1	Inner Hexagon Screw	1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
2	Bonnet	WCB	1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
3	Gasket	PTFE	PTFE	PTFE
4	Seat	1Cr18Ni9Ti PTFE、Rubber	1Cr18Ni9Ti PTFE、Rubber	1Cr18Ni12Mo2Ti PTFE、Rubber
5	Body	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
6	Packing Material	PTFE Nitrile Rubber or PTFE	PTFE Nitrile Rubber or PTFE	PTFE Nitrile Rubber or PTFE
7	Gland	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
8	Shut-off Device	1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
9	Yoke	WCB	ZG1Cr18Ni9Ti	ZG1Cr18Ni9Ti
10	Push-and-pull Rod	45#Steel Crome Plating	45#Steel Crome Plating	45#Steel Crome Plating
11	Pneumatic Actuator	ZTQD Series	ZTQD Series	ZTQD Series

Note: The main spare parts and sealed seat material of gate valve series can be de-signed for options as per users' special requirements.

PZ673H(F、X)-PN10(1.0MPa) Main Outline and Connecting Flange Size
Nominal diameter DN	L	D	D₁	D₂	Do	N-Th	d	H₁
50	48	165	125	99	180	4-M16	Φ18	460
65	48	185	145	118	200	4-M16	Φ18	520
80	51	200	160	132	220	8-M16	Φ18	570
100	51	220	180	156	240	8-M16	Φ18	680
125	57	250	210	184	260	8-M16	Φ18	780
150	57	285	240	212	280	8-M20	Φ23	850
200	70	340	295	266	300	8-M20	Φ23	980
250	70	395	350	319	340	12-M20	Φ23	1140
300	76	445	400	370	380	12-M20	Φ23	1360
350	76	505	460	430	400	16-M20	Φ23	1460
400	89	565	515	480	450	16-M24	Φ27	1630
450	89	615	565	530	530	20-M24	Φ27	1770
500	114	670	620	582	600	20-M24	Φ27	1960
600	114	780	725	682	600	20-M27	Φ30	2245
700	127	895	840	794	680	24-M27	Φ30	2600
800	127	1015	950	901	680	24-M30	Φ33	2910
900	203(127)	1115	1050	1001		28-M30	Φ33	3200
1000	216(149)	1230	1160	1112		28-M33	Φ36	3550
1200	254(156)	1455	1380	1328		32-M36	Φ39	4250

Note: The relative sizes are subject to change responding to difference in valve torque, medium and actuator model.

PZ673H(F、X)-Class150 Main Outline and Connecting Flange Size
Nominal diameter
DN	in	L	D	D₁	D₂	Do	N-Th	d	H₁
50	2"	48	152	120	92	180	4-M5/8-11	Φ19	460
65	2.5"	48	178	139.5	105	200	4-M5/8-11	Φ19	520
80	3"	51	190.5	152.5	127	220	4-M5/8-11	Φ19	570
100	4"	51	220.5	190.5	157	240	8-M5/8-11	Φ19	680
125	5"	57	254	216	186	260	8-M3/4-10	Φ22	780
150	6"	57	279	241.5	216	280	8-M3/4-10	Φ22	850
200	8"	70	343	298.5	270	300	8-M3/4-10	Φ22	980
250	10"	70	406	362	324	340	12-M7/8-9	Φ25	1140
300	12"	76	483	432	381	380	12-M7/8-9	Φ25	1360
350	14"	76	533	476	413	400	12-M1-8	Φ29	1460
400	16"	89	597	539.5	470	450	16-M1-8	Φ29	1630
450	18"	89	635	578	533	530	16-M118/-7	Φ32	1770
500	20"	114	699	635	584	600	20-M118/-7	Φ32	1960
600	24"	114	813	749.5	691	600	20-M11/4-7	Φ35	2245
750	30"	144	984	914.5	857	680	28-M11/4-7	Φ35	2120
900	36"	203(127)	1168	1086	1022	680	32-M11/2-6	Φ41	2500
1050	42"	216(149)	1346	1257.5	1193		36-M11/2-6	Φ41	2800
1200	48"	254(156)	1511	1422.5	1358		44-M11/2-6	Φ41	3300

Note: The relative sizes are subject to change responding to difference in valve torque, medium and actuator model.

PZ673H(F、X)-PN10(1.0MPa) Main Outline and Connecting Flange Size
Nominal diameter DN	L	D	D₁	D₂	Do	N-Th	d	H₁
50	48	165	125	99	180	4-M16	Φ18	463
65	48	185	145	118	200	4-M16	Φ18	534
80	51	200	160	132	220	8-M16	Φ18	608
100	51	220	180	156	240	8-M16	Φ18	735
125	57	250	210	184	260	8-M16	Φ18	845
150	57	285	240	212	280	8-M20	Φ23	942
200	70	340	295	266	300	8-M20	Φ23	1110
250	70	395	350	319	340	12-M20	Φ23	1323
300	76	445	400	370	380	12-M20	Φ23	1556
350	76	505	460	430	400	16-M20	Φ23	1711
400	89	565	515	480	450	16-M24	Φ27	1900
450	89	615	565	530	530	20-M24	Φ27	2075
500	114	670	620	582	600	20-M24	Φ27	2283
600	114	780	725	682	600	20-M27	Φ30	2662
700	127	895	840	794	680	24-M27	Φ30	3039
800	127	1015	950	901	680	24-M30	Φ33	3410
900	203(127)	1115	1050	1001		28-M30	Φ33	3723
1000	216(149)	1230	1160	1112		28-M33	Φ36	4113
1200	254(156)	1455	1380	1328		32-M36	Φ39	4850

Note: The relative sizes are subject to change responding to difference in valve torque, medium and actuator model.