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GB/T Gate Valve

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GB/T Gate Valve

Classification:

A valve is a device used to control the flow of fluids such as liquids, gases, and powdery solids. It can control the flow of fluid by opening or closing, or control the pressure of fluid by adjusting the opening of the valve. Valves are widely used in various industries, including chemical, petroleum, natural gas, water treatment, electricity and other fields.

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产品描述

Commodity name: GB/T Gate Valve
Commodity ID: 1172824494469435392

GB/T Gate Valve

Design and manufacturing standards:
Design and manufacturing: GB/T 12234
Structure length: GB/T 12221
Flange connection size: JB/T 79
Inspection: JB/T9092

Main dimensions

DN(mm)	Dimensions(mm)
DN(mm)	L	D	D1	D2	b-f	Z-Φd	H	D0
15	130	95	65	45	14-2	4-Φ14	170	120
20	150	105	75	55	14-2	4-Φ14	190	140
25	160	115	85	65	14-2	4-Φ14	205	160
32	180	140/135	100	78	14-2	4-Φ18	270	180
40	200	150/145	110	85	16-3	4-Φ18	310	200
50	250	165/160	125	100	16-3	4-Φ18	358	240
65	265	185/180	145	120	18-3	4-Φ18	373	240
80	280	200/195	160	135	20-3	8-Φ18	435	280
100	300	220/215	180	155	20-3	8-Φ18	500	300
125	325	250/245	210	185	22-3	8-Φ18	614	320
150	350	285/280	240	210	24-3	8-Φ23	674	360
200	400	340	335	265	26-3	12-Φ23	811	400
250	450	405	355	320	30-3	12-Φ25	969	450
300	500	460 410	410	375	30-4	12-Φ25	1145	580
350	550	520 470	470	435	34-4	16-Φ25	1280	640
400	600	580 525	525	485	36-4	16-Φ30	1452	640
450	650	640 585	585	545	40-4	20-Φ30	1541	720
500	700	715/705	650	608	44-4	20-Φ34	1676	720
600	800	840	770	718	48-5	20-Φ36	1874	800
700	900	910	840	788	50-5	24-Φ36	2083	800
800	1000	1025/1020	950	898	52-5	24-Φ41	2400	850
900	1100	1125/1120	1050	998	54-5	28-Φ41	2950	1000
1000	1200	1255	1170	1110	56-5	28-Φ42	3245	1000

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The main components of the valve include valve body, valve cover, valve core, valve seat, sealing ring, etc. The valve body and valve cover are usually made of cast iron, stainless steel, copper alloy and other materials to withstand the pressure of the fluid. The valve core and the valve seat play a role in controlling the flow of the fluid by moving the position of the valve core to change the passage of the fluid. The sealing ring is used to ensure the sealing performance of the valve and prevent the leakage of fluid.

Valve according to its use can be divided into manual valve and automatic valve two categories. Manual valve requires manual adjustment, usually by rotation, push-pull and other ways of operation, suitable for small flow, small pressure occasions. The automatic valve relies on electric, gas, liquid and other energy sources to realize automatic adjustment. It can automatically open and close or adjust the opening of the valve according to the preset control signal. It is suitable for large flow and high pressure occasions.

There are many kinds of valves, which can be divided into globe valves, gate valves, ball valves, butterfly valves, regulating valves, etc. according to their structural forms. Valve is mainly used to cut off the fluid channel, often used to close or open the fluid pipeline. The gate valve controls the passage of the fluid through the up and down movement of the gate plate, which is often used to adjust the fluid. The ball valve controls the passage of the fluid through the rotation of the ball, and has the characteristics of fast opening and closing, reliable sealing. Butterfly valve is through the rotation of the butterfly plate to control the fluid channel, suitable for large flow, low pressure occasions. The regulating valve controls the opening of the fluid by adjusting the position of the spool, which is suitable for precise control of the fluid flow and pressure.

Valves play a vital role in industrial production. They can control the flow of fluids and ensure the safety, stability and stability of the production process * *. The selection and use of the valve needs to be determined according to the specific process requirements and fluid properties. At the same time, it is necessary to pay attention to the maintenance of the valve, and regularly repair and replace it to ensure the normal operation of the valve. The valve industry is also constantly developing and innovating, constantly improving in materials, design, manufacturing and other aspects to meet the needs of different industries.