I. check the valve manufacturer
1, Dongguan Digital Electronic Technology Co., Ltd. is a professional manufacturer of electromagnetic valves, mainly engaged in the research and development and production of electromagnetic valves in automobile, medical and environmental protection industries, located in Dongguan, which is known as the "world factory". The non-standard solenoid valve products produced by Digital Love Company are deeply trusted by customers at home and abroad for their advanced structure, reliable performance, exquisite appearance and excellent service. It is a high-standard well-known enterprise integrating R&D, production, sales and service, and is unique in the same industry in China.
Dongguan Digital Love is a leader in solenoid valve customization industry! While constantly pursuing technological leadership and scientific and technological progress, we actively absorb and digest foreign leading technologies and develop new solenoid valves that are more suitable for market demand. Solenoid valve manufacturer with complete product specifications, advanced technology and perfect testing. All along, we regard quality and reputation as the foundation of enterprise development, take continuous innovation as the core driving force of enterprise development, take customer satisfaction as the purpose pursued by enterprises, and create a good valve for the world.
2.TWT Company has an excellent R&D advanced technical team, a large R&D center and test center, equipped with advanced precision equipment. Combined with more than 50 years of technical accumulation, developing and manufacturing high-quality, high-tech energy-saving and environmental protection products is TWT's research and development standard. The products developed and produced by TWT have won more than 20 patents and 10 national honors, and it is the founder of the valve production standard of the Ministry of Machinery Industry.
The company regards the safety and high reliability of products as its life. In China valve industry, we are the first company to be awarded ISO by DNV. 900 1: 2008 quality system certification, and obtained the European Union Pressure Equipment Directive 97/23/EC(CE certification) and China Classification Society factory certification.
Two. Types of check valves
Different classification methods are different, generally speaking, they are divided into the following structures: 1) swing check valve 2) lifting check valve 3) disc check valve 4) pipeline check valve 5) empty check valve 6) slow closing check valve 7) diaphragm check valve 8) wear-free ball check valve 9) floating ball check valve 1 1. Flow regulating buffer check valve 13) swing check valve with pneumatic closing device 14) swing check valve with pneumatic device 15) DC swing check valve with internal pressure self-sealing bonnet 16) swing check valve with minimum flow nozzle 17) clip-on silencing check valve/. Others are divided according to pressure, temperature, material, size and connection mode.
Three, check valve specification model meaning
Number of additional check valves: HH micro-resistance slow-closing check valve, BH thermal insulation check valve and HQ spherical check valve;
(1) check valve type: h stands for check valve;
⑵ Check valve connection: 4 flanges, 6 welds and 7 clamps;
(3) Check valve form: 1 lifting type, 2 vertical type, 4 swing type, 6 double flap type and 8 butterfly type;
(4) Check valve sealing: B Babbitt alloy, F fluoroplastics, H stainless steel, M Monel alloy, X rubber, Y cemented carbide and W direct processing;
5] Check valve pressure: 16 pressure 16 kg, PN 1.6-25mpa, pound class 150LB-2500LB, daily class 5K-63K；;
[6] Check valve material: Q ductile iron, C carbon steel, P-304, R-3 16, A titanium alloy, I chromium molybdenum steel;
Common models of check valves:
Double-card lifting check valve: H7 1X, H71h;
Double disc butterfly valve check valves: H76X and H76H
Sandwich disc check valves: H74H, H74I and H74M.
Silent check valves: H42H and H42W
Micro-resistance slow closing check valves: HH44H, HH46H and HH49H.
Rubber disc check valve: HC44X
Silent check valves: HC4 1H, HC4 1X, HC41t;
Lift check valve: H4 1H, H41w;
Swing check valves: H44H and H44W
Sliding ball check valve: HQ 41x;
Welded check valves: H6 1Y, H62Y and H64Y.
The stainless steel angle steel mentioned above belongs to the long steel whose two sides are perpendicular to each other, and can be divided into equilateral stainless steel angle steel and unequal stainless steel angle steel, which can be further subdivided according to the different sizes and specifications. Of course, consumers need to refer to many factors when choosing to buy, such as curvature, side width, side thickness, vertex angle, theoretical weight and other parameters, which play a decisive role in the later effect and are also parameters that everyone needs to pay special attention to.