SCZ73H-10C Penetrating Knife Gate Valve

NegotiableUpdate on 04/06

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Nature of the Manufacturer: Producers

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Place of Origin

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Overview

Product Introduction: Penetrating knife gate valve is a type of gate valve with an extended gate plate and a through-hole of the same diameter machined on the gate plate. The gate plate is tightly attached to the valve seat for opening and closing movements without detachment. This makes the work smoother, the sealing performance more superior, and the medium does not leave the valve chamber, allowing for full circulation

Product Details

Product Introduction:

Penetrating knife gate valve is a type of gate valve where the gate is extended and a through-hole of the same diameter is machined on the gate, and the gate is tightly attached to the valve seat for opening and closing movements without detachment. This makes the work smoother, with superior sealing performance, and the medium does not remain in the valve chamber, allowing for full circulation. Suitable for controlling pipelines such as slag discharge, pulp, mud, sewage, etc. Widely used in industries such as papermaking, metallurgy, petrochemicals, electricity, chemical fibers, pharmaceuticals, environmental protection, and food.

Product advantages:

1. Bidirectional sealing with two valve seat sealing rings, this gate is longer and extends from the valve body at the bottom, requiring two sealing packing devices.

2. The gate forms a hole shaped diameter, which is used to allow the medium to flow away completely without retention when the gate is opened, and to seal completely when the gate is closed.

3. Under high medium concentration conditions, the valve seat seal can also be maintained, as there is no retention zone and no medium accumulation at the bottom of the gate.

4. This product is suitable for sugar production, loading and unloading of chemical equipment (dryers, reactors), and pulp outlets in paper mills, and is used for recycling old paper mixed with a large amount of impurities.

5. The valve body has no grooves in the diameter, and the medium will not be blocked or obstructed. It also has full diameter flow characteristics, and the chamber does not accumulate slag, making it particularly suitable for slurry transportation and powder particle transportation.

Shell test and sealing test:

1. The shell test and sealing test media for plug-in valves are water (including preservatives), kerosene, or other suitable liquids with a viscosity not greater than water.

2. The sealing pair is a non-metallic sealed plug valve, and the sealing shell test and requirements are in accordance with GB/T13927-92 Class D.

3. The sealing pair is a metal sealed plug valve. For those with sealing performance requirements, the leakage rate of the sealing test is calculated as 1 × DNmm3/s. For those without sealing performance requirements, this test is not conducted.

4. The plug-in valve driven by electric, hydraulic, and pneumatic devices should be closed three times after the position is set, and the shell and sealing tests should be conducted according to the requirements of 1 and 3.

5. The cleanliness requirements for plug-in valves shall comply with the provisions of JB/T7748.

6. Static pressure life test.

7. The number of static pressure life tests for plug-in valves shall be in accordance with regulations, while other technologies shall comply with the provisions of JB/Z 234.

Number of static pressure life tests	metal seal	DN≤150mm	1200 times
		DN≥200-400mm	1000 times
		Dn≤150mm	800 times
	Non metallic sealing	Dn≤150mm	1400 times
		DN≤200-400mm	1200 times
		Dn≤450mm	1000 times

Note: 1. Metal sealing refers to the sealing auxiliary material being metal metal

2. Non metallic sealing refers to the sealing secondary material being metal non-metal or non-metal non-metal.

Performance specifications:

Valve model		SCZ73F-2.5	SCZ73H-6	SCZ73H-10	SCZ73F-16
Work pressure (MPa)		0.25	0.6	1.0	1.6
Applicable Medium		Syrup, pulp, sewage, ash, gas, etc
Applicable temperature (℃)		Rubber ≤ 80, fluororubber ≤ 180, carbon steel ≤ 425, stainless steel ≤ 600310S, stainless steel ≤ 1100
Drive Type		Manual (Handwheel)
material	valve body	WCB cast steel, 304 stainless steel, 316 stainless steel, 310S stainless steel
	ram	stainless steel
	Valve body sealing ring	Synthetic rubber or polytetrafluoroethylene
	阀杆	chromium stainless steel
	support	carbon steel
	filler	Polytetrafluoroethylene

Note: The rubber grade depends on the properties of the medium and the operating temperature; The material grade of the gate depends on the properties of the medium.

Connection size:

MPa	DN	L	D	D1	D2	H	N-M	D0	MPa	DN	L	D	D1	D2	H	N-M	D0
1.0	50	48	160	125	100	335	4-M16	180	1.6	50	48	160	125	99	335	4-M16	180
	65	48	180	145	120	363	4-M16	180		65	48	185	145	120	363	4-M16	180
	80	50	195	160	135	395	4-M16	220		80	50	200	160	135	395	8-M16	220
	100	50	215	180	155	465	8-M16	220		100	50	220	180	155	465	8-M16	220
	125	57	245	210	185	530	8-M16	230		125	57	250	210	185	530	8-M16	230
	150	57	280	240	210	630	8-M20	280		150	57	285	240	210	630	8-M20	280
	200	70	335	295	265	750	8-M20	360		200	70	340	295	265	750	12-M20	360
	250	70	390	350	320	900	12-M20	360		250	70	405	355	310	900	12-M22	360
	300	76	440	400	368	1125	12-M20	400		300	76	460	410	375	1125	12-M22	400
	350	76	500	460	428	1260	16-M20	400		350	76	520	470	435	1260	16-M22	400
	400	89	565	515	482	1450	16-M22	400		400	89	580	525	485	1450	16-M27	400
	450	89	615	565	532	1600	20-M22	530		450	89	640	585	545	1600	20-M27	530
	500	114	670	620	585	1820	20-M22	530		500	114	715	650	609	1820	20-M30	530
	600	114	780	725	685	2300	20-M27	600		600	114	840	770	720	2300	20-M36	600
	700	130	895	840	800	2600	24-M27	600		700	130	910	840	788	2600	24-M36	600
	800	130	1010	950	898	3000	24-M30	680		800	130	1025	950	898	3000	24-M36	680
	900	140	1110	1050	1005	3400	28-M30	680		900	140	1125	1050	998	3400	28-M36	680
	1000	216	1220	1160	1115	3800	28-M30	700		1000	216	1255	1170	1110	3800	28-M42	700
	1200	254	1450	1380	1325	4300	32-M36	800		1200	254	1485	1390	1325	4300	32-M48	800