显示标签为“Check valve”的博文。显示所有博文
显示标签为“Check valve”的博文。显示所有博文

2013年11月18日星期一

To check whether the power unit supporting the installation is solid

Check before using the water pump pumping water irrigation, should do security checks prior to use. To check whether the bolts complete all parts of the device, loose, to ensure the safe operation of the pump. To check the power machine is safe and effective. Use Diesel, check the cooling water, lubricating oil, etc. are missing, functioning properly; using a motor, you should  Check valve  check the line set up, connecting  High pressure ball valve  safety requirements, grounding line is reliable, the motor is damp, the circuit is intact, preventing electric shock, ensure the safe use of electricity. To check whether the unit power matching is firmly installed. Note Check the power machine and water pump drive connection is standard, safe, reliable,  Instrumentation ball valve  joints are equipped with security features such as fenders, protective nets to avoid dangerous accidents. No water pump causes and troubleshooting irrigation water shortage: Before starting the pump, pump should be (including the inlet pipe) filled with water, or lack of irrigation water, air pump, you can not smoke in Sheung Shui. May take enough irrigation water, drain pump air solution.

The through hole the ball valve passage center line coincident or perpendicular to the completion of the valve fully open or fully closed

Ball is a sphere with a circular hole as the opening and closing parts, turning ball with stem, in order to achieve open and close movement of the valve. The main function is off  Instrument manifolds  the pipeline and the medium flow path, its working principle is the use of the handle or other device is driven ball rotated 90 ° (special structure ball exceptions), the through hole of the sphere coincides with the center line of the body  Check valve  or vertically, to complete the valve fully open or fully closed. Ball valve structure according to the structure of the sealing mechanism, into floating ball valve and ball valve fixed ball valve.

2013年11月11日星期一

Spool with high-performance specialty plastics polyether ether ketone resin (PEEK) Manufacturing

In recent years, has become a research hotspot. General distribution of hydrothermal vents on the seafloor volcanic activity active regions, hydrothermal fluids with high  Check valve , high pressure, corrosion, etc., to the study of hydrothermal sampler brings a huge challenge. Deep-sea hydrothermal sampling required to maintain a constant pressure sample and the sample is not contaminated. sampler sampling valve is one of the key components of the system, the use of reliable  Instrument valve manifolds , the maximum working pressure of 70 MPa. according to anti-corrosion, high temperature and sealing requirements , TC4 titanium alloy valve body, valve using high-performance specialty plastics polyether ether ketone resin (PEEK) manufactured, it has a very high stiffness and hardness, as well as unique high tensile strength and fatigue strength, also has excellent high  Valve manifolds , thermal stability and corrosion resistance, continuous use temperature of 260 ℃, short-term temperature up to 300 ℃. trial found spool pressure differential generated by the axial load, due to the structure size unreasonable excessive stress can cause plastic deformation or fracture occurs, it is difficult to maintain pressure on the samples collected.