Product overview

The specification and category of compound high-speed exhaust valve shall meet the requirements of pipeline design documents
The model of compound high-speed exhaust valve shall indicate the requirements of national standard number. If it is an enterprise standard, the relevant description of the model shall be indicated。
The working pressure of the composite high-speed exhaust valve should be equal to or greater than the working pressure of the pipeline. On the premise of not affecting the price, the working pressure that the valve can bear should be greater than the actual working pressure of the pipeline
For the manufacturing standard of composite high-speed exhaust valve, the national standard number shall be indicated. If it is the enterprise standard, the enterprise documents shall be attached to the procurement contract. This kind of valve is in the pipeline
型号：FGP4X	公称通径DN：40-400	使用压力MPa：1.0-6.4
连接方式：法兰	形式：自动	主要功能：吸气，排气
使用介质：水	材质：铸铁 铸钢 不锈钢	标准：国标机械部标准或定做非标

              Fgp4x composite high-speed intake and exhaust valve is used in Zui high point or closed gas place on the pipeline to remove the gas in the pipe to drain the energy pipeline, so as to achieve normal industry. If the composite high-speed exhaust valve of water supply pipeline is not installed, the liquid flowing in the pipe will generate dynamic heat and cause gas, forming a section, so that the water output of the pipeline can not meet the design requirements. Secondly, power failure and pump shutdown occur during the operation of the pipeline The negative pressure of the pipe will cause the pipe vibration or rupture, and the exhaust valve will quickly draw the air into the pipe to prevent the pipe vibration or rupture.
Product use

       The compound high-speed exhaust valve is installed in the place where high-speed air intake and exhaust is possible. When filling water, the high-speed exhaust valve removes the air in the pipeline at a high-speed. When the pipeline is emptied, the air is inhaled to keep the drainage smooth. The compound high-speed exhaust valve of water supply pipeline can continuously remove the air precipitated during the normal operation of the pipeline. When water hammer is likely to occur, air will enter automatically to avoid negative pressure and prevent or slow down the harm of water hammer.
Product features

For the manufacturing standard of composite high-speed exhaust valve, the national standard number shall be indicated. If it is the enterprise standard, the enterprise documents shall be attached to the procurement contract. This kind of valve is in the pipeline

Material list

NO	PARTSNAME	MATERIAL
1	valve body/BODY	WCB/CF8/CF8M
2	Valve cover/CAP	WCB/CF8/CF8M
3	Large hole seal assembly/sealingcomponents	NBR
4	Exhaust hood/Exhausthood	WCB/CF8/CF8M
5	Small blowhole/exhaustport	---

产品结构图

Connection size

Connection sizeDN	D	D1	D2	Φ	H	Z-Φd
50	115	85	68	195	320	4-14
65	160	125	100	195	320	4-18
80	195	160	135	242	375	4-18
100	215	180	155	260	395	8-18
150	280	240	210	345	500	8-23
200	335	295	265	425	600	8-23
250	390	350	320	500	680	12-23
300	440	400	368	606	780	12-23
350	500	460	425	650	860	16-23
400	565	515	485	740	940	16-25

instructions
(1) to install the vent valve vertically, the riser system should be at the high point of Zui, and the horizontal pipe system should be installed at the end of Zui;
② The manhole is installed at the opening of the compound high-speed inlet and exhaust valve of the water supply pipeline: a small hole is opened on the long-distance large pipe line. When the water flow reaches the opening position, the gas gathering area cannot be formed due to the narrow space, so the gas-liquid mixture cannot be separated and the gas in the pipeline can not be effectively discharged. Therefore, the manhole is installed at the opening to form a gas accumulation area Effective separation of gas and liquid to remove the gas in the pipeline;
③ A buffer plug valve is installed under the compound high-speed intake and exhaust valve: when the pipeline is filled with water, the pipeline pressure will gather at the bottom of the air valve due to the high pressure of the pipeline. When the buffer plug valve is not installed, the excessive water pressure will damage the components inside the exhaust valve, and then the phenomenon such as leakage of the exhaust valve and no exhaust will occur It is suggested that a buffer plug valve should be installed under the exhaust valve, especially under the high-pressure pipeline.

The compound high-speed exhaust valve is installed in the place where high-speed air intake and exhaust is possible. When filling water, the high-speed exhaust valve removes the air in the pipeline at a high-speed. When the pipeline is emptied, the air is inhaled to keep the drainage smooth. The compound high-speed exhaust valve of water supply pipeline can continuously remove the air precipitated during the normal operation of the pipeline. When water hammer is likely to occur, air will enter automatically to avoid negative pressure and prevent or slow down the harm of water hammer.

The compound high-speed intake and exhaust valve can prevent the floating ball from being blown up in the high-speed air flow and blocking the exhaust port, resulting in the failure of the exhaust valve. In order to prevent the valve mouth from being blown up and blocked, the high-speed inlet and exhaust valve is equipped with a casing at the inlet, which makes the structure of the valve more complicated. 1. High speed exhaust when filling water, not afraid of blowing and blocking. 2. Inhale at high speed as you drain. 3. Micro exhaust under pressure.

When the water enters the pipeline, the plug stops at the lower part of the positioning frame, and the composite high-speed exhaust valve exhausts a large amount of air. When the air is exhausted, water enters the valve to float the ball, and the driving plug is closed to stop exhaust. If the pipeline is in normal operation, a small amount of gas will naturally accumulate in the upper part of the pipe. To a certain extent, the water level in the compound high-speed intake and exhaust valve of the water supply pipeline will drop, the floating ball will drop at any time, and the gas will be discharged from the small hole. If there is a power failure or a stop pump, when the water in the pipe is empty, there will be negative pressure at any time. The floating ball will run down the water and open the small holes to drive the large hole to enter a large quantity of air to ensure the safety of the pipeline. But it can not be used in the sewage pipeline.

NO	PARTSNAME	MATERIAL
1	valve body/BODY	WCB/CF8/CF8M
2	Valve cover/CAP	WCB/CF8/CF8M
3	Large hole seal assembly/sealingcomponents	NBR
4	Exhaust hood/Exhausthood	WCB/CF8/CF8M
5	Small blowhole/exhaustport	---

 

Nominal diameterDN	D	D1	D2	Φ	H	Z-Φd
50	115	85	68	195	320	4-14
65	160	125	100	195	320	4-18
80	195	160	135	242	375	4-18
100	215	180	155	260	395	8-18
150	280	240	210	345	500	8-23
200	335	295	265	425	600	8-23
250	390	350	320	500	680	12-23
300	440	400	368	606	780	12-23
350	500	460	425	650	860	16-23
400	565	515	485	740	940	16-25

① To install the vent valve vertically, the riser system should be at the high point of Zui, and the horizontal pipe system should be installed at the end of Zui;
② The manhole is installed at the opening of the compound high-speed inlet and exhaust valve of the water supply pipeline: a small hole is opened on the long-distance large pipe line. When the water flow reaches the opening position, the gas gathering area cannot be formed due to the narrow space, so the gas-liquid mixture cannot be separated and the gas in the pipeline can not be effectively discharged. Therefore, the manhole is installed at the opening to form a gas accumulation area Effective separation of gas and liquid to remove the gas in the pipeline;
③ A buffer plug valve is installed under the compound high-speed intake and exhaust valve: when the pipeline is filled with water, the pipeline pressure will gather at the bottom of the air valve due to the high pressure of the pipeline. When the buffer plug valve is not installed, the excessive water pressure will damage the components inside the exhaust valve, and then the phenomenon such as leakage of the exhaust valve and no exhaust will occur It is suggested that a buffer plug valve should be installed under the exhaust valve, especially under the high-pressure pipeline.