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Product Description2011-05-06
large universal valve lockout with nylon cable and
blocking arm manufactured with industrial-grade steel and nylon with red
color. Size of large device with 8
Brass ball valve introduction2011-05-05
Brass ball valve standard
1, brass ball valve
Standard Number: GB/T15185-1994
2, industrial brass ball valves
Standard Number: NF/E29-354-2003
3, the ball valve product quality grading
Standard Number
pump performance curve2011-05-03
does the duty point of a pump in performance curve change automatically depends the system head?
for example, i have pump with best efficiency at Q = 10 m3/min and H = 5 m , but i use the pump in a s
Pros and cons of ball valves2011-04-29
The ball valve was invented in the 1950s
and is today widely used across many industries including the chemical,
petroleum and paper making sectors as well as in water treatment
plants.
The virtues o
Ball valve seat structure theory profile2011-04-28
The main function is to cut off the ball valve or pipe connected to the fluid channel.
Valve drive device works with the top of the stem to exert torque passed ball to make it rotate 90
