PZ673W stainless steel clamp type pneumatic knife gate valve

NegotiableUpdate on 04/06

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Product Introduction: PZ673W Pneumatic Stainless Steel Knife Gate Valve has the advantages of simple and compact structure, reasonable design, lightweight and material saving, reliable sealing, lightweight and flexible operation, small volume, smooth channel, low flow resistance, light weight, easy installation, and easy disassembly. It can be used under working pressure of 1

Product Details

Product Introduction:

PZ673W pneumatic stainless steel knife gate valve has the advantages of simple and compact structure, reasonable design, lightweight and material saving, reliable sealing, easy and flexible operation, small volume, smooth channel, low flow resistance, light weight, easy installation and disassembly. It can work normally under working pressure of 1.0MPa-2.5MPa and operating temperature of -29-650 ℃. The blade gate valve has a shearing function on its gate plate, which can scrape off the adhesive on the sealing surface and automatically remove debris. The stainless steel gate plate can prevent sealing leakage caused by corrosion.
Knife gate valve, also known as knife gate valve, knife gate valve, slurry valve, or mud valve, has a gate valve as its opening and closing component. The direction of movement of the gate valve is perpendicular to the direction of the fluid, and the medium is cut off by a blade shaped gate valve that can cut fiber materials. Knife gate valves entered China in the 1980s, and in less than 20 years, their use has expanded from ordinary fields to a wider range of industries. From coal selection, gangue discharge, and slag discharge in mining and power plants, to urban sewage treatment, and from general industrial pipelines to food, sanitation, and other pipeline systems.
The ultra-thin knife gate valve solves the difficult problems of high flow resistance, heavy weight, difficult installation, and large footprint of ordinary gate valves, flat gate valves, ball valves, globe valves, regulating valves, butterfly valves, and other types of valves due to its advantages of small volume, low flow resistance, light weight, easy installation, and easy disassembly. After the emergence of knife gate valves, a large number of general-purpose cut-off valves and regulating valves have been replaced by them.
The umbrella gear knife type gate valve has a pressure reducing effect, making the opening and closing of the valve easier and more effortless. Its gate has a shearing function, which can scrape off the adhesive on the sealing surface and automatically remove debris. The stainless steel gate can prevent sealing leakage caused by corrosion. This type of valve should generally be installed horizontally in pipelines.

Applicable medium:

Mining and steel industry - Knife gate valves are used for coal slurry, filter slurry, etc.

Purification device - knife gate valve is used for wastewater, mud, dirt, and clarified water with suspended solids.

Paper industry - Knife gate valves are used for any concentration of pulp, material water mixture.

Sugar industry - Knife gate valves are used for sugar beet washing, syrup, juice extraction, fruit juice, etc.

Food industry - Knife gate valves are used for washing and rinsing equipment, grain conveying equipment, malt extract, etc.

Power plant ash removal - knife gate valve is used for ash slurry.

Product advantages:

PZ673W stainless steel pneumatic knife gate valve has the advantages of simple and compact structure, reasonable design, lightweight and material saving, reliable sealing, easy and flexible operation, small volume, smooth channel, low flow resistance, light weight, easy installation and disassembly. It can work normally under working pressure of 0.60MPa-2.5MPa and operating temperature of -29-650 ℃. The blade gate valve has a shearing function on its gate plate, which can scrape off the adhesive on the sealing surface and automatically remove debris. The stainless steel gate plate can prevent sealing leakage caused by corrosion.

Product Category:

Classification:

1) Stainless steel rising stem gate valve - internal thread structure for bronze multi turn valves. In the fully open "rear seat" state, the valve stem thread can avoid contact with the fluid medium.

When opening the valve, the valve stem rises, so there must be enough space at the point where the valve stem rises to prevent damage to the surface of the valve stem. The height of the valve stem indicates whether the valve is in the open or closed state. Manufacturer direct sales stainless steel knife gate valve, pneumatic stainless steel knife gate valve PZ673W pneumatic stainless steel knife gate valve

2) Stainless steel concealed stem gate valve - internal thread structure for bronze and cast iron gate valves. This structural form is more compact than the open stem, and the valve stem threads are always exposed to the fluid medium, making them susceptible to erosion or corrosion. This type of valve structure cannot display the open/closed status.

3) Stainless steel rising stem gate valve - external thread and bracket structure is the preferred structure for cast iron multi turn valves. Due to the thread being located outside the valve, it is beneficial to prevent corrosion by fluid media and facilitate the addition of lubricating oil. When the valve stem rises, be careful that there is enough space above the valve stem to prevent damage to the threads.

Product Features:

The opening and closing component of pneumatic knife gate valve is the gate plate, and the movement direction of the gate plate is perpendicular to the fluid direction. Manual knife gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve has two sealing surfaces, and the most commonly used mode gate valve has two sealing surfaces that form a wedge shape. The wedge angle varies with the valve parameters, usually 50. The gate of the wedge knife gate valve can be made as a whole, called a rigid gate valve; It can also be made into a gate that can produce slight deformation to improve its processability and compensate for the deviation of the sealing surface angle during the processing. This type of gate is called an elastic gate knife gate valve. When the gate is closed, the sealing surface can be sealed only by the medium pressure, that is, the sealing surface of the gate is pressed against the valve seat on the other side by the medium pressure to ensure the sealing surface is sealed, which is called self sealing Most knife type gate valves use forced sealing, which means that when the valve is closed, the gate plate needs to be forcibly pressed against the valve seat by external force to ensure the sealing surface. Electric knife type gate valves and pneumatic knife type gate valves have American standard knife type gate valve products. Precautions and characteristics during use: The opening and closing component of knife type gate valves is the gate plate, and the direction of movement of the gate plate is perpendicular to the direction of fluid flow. Knife type gate valves can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve has two sealing surfaces, and the most commonly used mode gate valve has two sealing surfaces that form a wedge shape. The wedge angle varies with the valve parameters, usually 50. The gate of the wedge knife gate valve can be made as a whole, called a rigid gate valve; It can also be made into a gate that can produce slight deformation to improve its processability and compensate for the deviation of the sealing surface angle during the processing. This type of gate is called an elastic gate knife gate valve. When the gate is closed, the sealing surface can be sealed only by the medium pressure

Work performance:

The torque for opening and closing the gate, the wedging of the gate, the sealing of the valve, and the service life of the gate valve are several issues that must be considered to improve the performance of the gate valve. In order to avoid the gate getting stuck during lifting, the angle between the two sealing surfaces of the wedge-shaped gate usually increases with the increase of medium temperature and diameter.

The gate of wedge gate valve can be divided into three types according to its structure: single gate, double gate, and elastic gate.

Single valve plates have the advantages of simple structure and reliable use, but they are difficult and the gate is prone to getting stuck when the temperature changes. The Chess Type I double gate is composed of two gate plates assembled together, and the angle between the two sealing surfaces can be automatically adjusted, making it easy to process. The gate plates are not easily wedged when the temperature changes. The disadvantage is that there are many parts, the structure is complex, and the gate plate is easily detached after long-term corrosion due to its movable connection.

Connection size:

MPa	DN	L	D1	D2	H	n-M	MPa	DN	L	D1	D2	H	n-M
0.6MPa	50	48	90	110	335	4-M12	1.0MPa	50	48	100	125	335	4-M16
	65	48	110	130	363	4-M12		65	48	120	145	363	4-M16
	80	51	125	150	395	4-M16		80	51	135	160	395	4-M16
	100	51	145	170	465	4-M16		100	51	155	180	465	8-M16
	125	57	175	200	530	8-M16		125	57	185	210	530	8-M16
	150	57	200	225	630	8-M16		150	57	210	240	630	8-M20
	200	70	255	280	750	8-M16		200	70	265	295	750	8-M20
	250	70	310	335	900	12-M16		250	70	320	350	900	12-M20
	300	76	362	395	1120	12-M20		300	76	368	400	1120	12-M20
	350	76	412	445	1260	12-M20		350	76	428	460	1260	16-M20
	400	89	462	495	1450	16-M20		400	89	482	515	1450	16-M22
	450	89	518	550	1600	16-M20		450	89	532	565	1600	20-M22
	500	114	568	600	1800	16-M20		500	114	585	620	1800	20-M22
	600	114	670	705	2300	20-M22		600	114	685	725	2300	20-M27
	700	127	775	810	2500	24-M22		700	127	800	840	2500	24-M27
	800	127	880	920	2800	24-M27		800	127	898	950	2800	24-M30
	900	154	980	1020	3100	24-M27		900	154	1005	1050	3100	28-M30
	1000	165	1080	1120	3400	28-M27		1000	165	1115	1160	3400	28-M30
	1200	190	1295	1340	3600	32-M30		1200	180	1325	1380	3600	32-M36

Installation and use:

Before installation, it is necessary to check the valve chamber and sealing surface to ensure that there are no dirt or sand particles attached;

2. The bolts at each connection point should be tightened evenly;

3. Check that the filling part is tightly pressed to ensure both the sealing of the filling and the flexibility of the gate opening;

Before installing the valve, users must verify the valve model, connection size, and pay attention to the flow direction of the medium to ensure consistency with the valve requirements;

5. When installing valves, users must reserve necessary space for valve actuation;

6. The wiring of the driving device must be carried out according to the circuit diagram;

7. Knife type gate valves must be regularly maintained and should not be bumped or squeezed at will to avoid affecting the sealing.