"Micro-resistance slow-closing check valve" is also widely known as a check valve. Its function is to prevent some media in the pipeline from flowing backwards. Micro-resistance slow-closing check valves are widely used in the industrial field. The check valve is an automatic valve and is mainly used in the medium of one-way flow. It only allows medium to flow in one direction to prevent accidents. So, what are the better slow-closing check valve manufacturers ? So today I will recommend several good micro-resistance slow-closing check valve manufacturers for everyone's reference!
Slow closing check valve use
Slow closing check valve applies to nominal pressure PN1.0MPa~42.0MPa, Class150-2500; nominal diameter DN15~1200mm, NPS1/2~48; working temperature -196~540°C on various pipelines, used to prevent medium Backwards. By selecting different materials, it can be applied to various media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and urea.
Slow closing check valve material
Carbon steel, cryogenic steel, dual phase steel (F51/F53), titanium alloy, aluminum bronze, Inconel (SSONEL625), SS304, SS304L, SS316, SS316L; Cr-Mo steel, Monel (400/500), 20 # Alloy, Hastelloy and other metal materials
300X slow closing check valve model features
1. The slow-closing system has excellent performance and is not affected by the medium in the pipeline. The valve flap is closed at the first speed and closed to prevent damage to the water hammer.
2, small body, light weight, structure length is only about one-third of the swing check valve.
3, rubber buffer, open and close smoothly, no vibration, no noise.
4, rubber soft seal, good sealing performance, wear resistance, long service life.
5, compared with the old-fashioned check valve flow resistance is small, there are obvious energy-saving effects.
300X slow closing check valve model principle
When the pump is started, the pressure at the inlet of the valve causes the flap to open quickly against the spring force. At the same time, the media at the inlet end of the main valve enters the upper cavity of the diaphragm through the needle valve and the check valve. Adjust the opening degree of the needle valve so that the medium entering the upper cavity of the diaphragm acts on the diaphragm pressure plate to generate reaction force on the valve flap and ensure that the valve flap is slowly opened. Adjust the opening of the needle valve at the inlet end of the main valve, control the opening speed of the valve, ensure that the opening time of the main valve is longer than the start-up time of the pump motor, realize the light-load start pump, and prevent the motor starting current from being too large.
When the water pump is closed, the pressure at the inlet of the valve suddenly decreases, and the valve flap will suddenly close under the action of the pressure at the outlet end, causing the sudden pressure rise at the outlet end of the valve. Water hammer is easily generated at this time, resulting in damage to the piping and equipment behind the valve, and generating a lot of noise. Because the return system is installed at the outlet end of the valve, the medium behind the valve enters the upper chamber of the diaphragm through the ball valve. Due to the non-return function of the check valve, the medium cannot enter the inlet end. At the same time, the lower chamber of the diaphragm is also filled with medium. Although the media pressure in the upper chamber causes the disc to close, the media in the lower chamber cannot be rapidly expelled under the throttling action of the small hole in the membrane seat, resulting in a buffering process that prevents the disc closing speed and achieves slow closing and mute. The effect prevents water hammer phenomenon. By adjusting the opening of the ball valve, the closing speed of the valve flap (ie, the closing time of the valve) can be effectively controlled.
Slow closing check valve price
Slow closing check valve 300X-16
This slow closing check valve comes from the Fujian Shiyika valve brand and is operated and sold by the Shishi City Plumbing Equipment Operation Department. The medium is water and the material is made of ductile iron. It is suitable for use under normal pressure and normal temperature environment. The connection method is flange, which can effectively improve the safety of the water system. A variety of models available for users to choose from, including DN40 model is about 255 yuan, DN50 model is about 255 yuan, DN100 model is about 415 yuan, DN250 model is about 1820 yuan, DN300 model is about 1970 yuan.
Micro resistance slow closing butterfly check valve
This slow closing check valve is manufactured by Shandong Haidian Valve Co., Ltd. It belongs to SFCV rubber petal slow closing check valve. It is made of ductile iron. The connection method is flange. The structure is butterfly. The medium is clear water, sewage and seawater. It is suitable for use under low pressure environment and the applicable temperature range is 0. To 80 degrees Celsius. The current market price is about 150 yuan / month.
Cast iron 300X slow closing check valve
This slow closing check valve is manufactured by Wuxi Karls Valve Co., Ltd. and belongs to NRVR silent slow closing check valve. The material is made of cast iron, the connection method is flange, the structure is swing type, and the nominal diameter is DN15. -100 (mm), applicable medium is water, plunger type, suitable for use under normal temperature and pressure environment. The current market price is about 750 yuan / month.
Micro-resistance slow closing butterfly check valve flange check valve
This slow closing check valve is manufactured by Tieling Zhongyuan Valve Co., Ltd. It is a large-calibre slow-closing check valve with a nominal diameter of DN300-5500, a suitable pressure range of 0.1-4Mpa and a working temperature range of -30-400. °C, the applicable medium is water, oil, gas. The current market price is about 3500 yuan / month.
Note: This price is for reference only! Due to geographical differences, of course, the price will be different. For more details on the prices, please refer to the local distributors!
Slow closing check valve manufacturers recommended
The first manufacturer: Changzhong Energy Saving Pump Shanghai Co., Ltd.
The establishment time of this manufacturer was on September 3, 2014. At that time, the registered capital was RMB 20 million, the workshop area was 26,680 square meters, and the annual turnover could reach around RMB 5.001 to RMB 100 million. The main location of this manufacturer is Room 4091, 6th Floor, No. 4988 Cao'an Road, Shanghai, China. Its main products are water pumps, valves, water supply equipment, environmental protection equipment, electrical control equipment, micro-resistance slow closing check valves, etc. This manufacturer is a share Industrial Co., Ltd. It is a collection of scientific research, research, production, sales, Service-integrated manufacturers, manufacturers produce more reliable products, relatively good quality, while the credibility is also high.
The second manufacturer: Xinxiang Yutong Valve Co., Ltd.
The initial establishment of this aria was in 2011. At that time, the registered capital for business was about 5.08 million yuan, and the factory area was 3,000 square meters. The annual turnover could also reach around 500 to 100 million yuan. The operating address of this factory is located along the east side of Nanqiao Road, Yucun, Yucun, Yucun Town, Xinjiao County, Xinxiang County, Henan Province, China. The main products are various valves, pressure vessel equipment accessories, micro-resistance slow closing check valve and so on.
The third manufacturer: Yongjia Shenhu Electromechanical Pump Valve Co., Ltd.
It was established on November 7, 1997. It was established for a long time. At that time, the registered capital was RMB 11.8 million. Its main geographical location is Puxi Industrial Zone, Oubei Town, Yongjia County, Wenzhou, Zhejiang, China. This factory covers an area of ​​about 10,000 square meters. The purpose of this manufacturer is to "survive on quality, develop on credit," and it also has advanced technology, a group of outstanding scientific and technological talents, and the price of the product is relatively reasonable. Quality has also been widely recognized.
Editor's summary: slow-closing check valves are important process components for the safety performance of the system. For the safety of the system, slow closing check valves are indispensable. The aforementioned paragraphs are currently hot products on the market, if necessary. Buy it now!
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