Q:The difference between fire general valve and fire fighting special valve

Fire fighting valves are mainly signal valves and alarm valves and water indicators, etc., other gate valves, butterfly valves, pressure relief valves and filters are common valves.

Q:How to carry out the valve strength test and air tightness test?

Refer to the GB/T13927 or ISO5208 standards and need to pass it to you

Q:What is the difference between the adjustable range of valve 50:1 and 100:1?

One is 50 times, and the other is 100 times.

Q:What does the "Z45T-16" valve mean?

Z - gate valve4 - flange connection5 - Dark pole, stem non lifting (gate valve structure)T - copper alloy, valve sealing face code16 - pressure code, 1.6MPaMaterial code for grey cast iron valves of nominal pressure less than or equal to PN16 shall be omitted in model preparation.May refer to JB/T 308 valve model compilation method

Q:What does the "XV" valve mean?

XV:X said V is plug valve, said valve body material is chrome molybdenum vanadium steel.

Q:What are the other valves used for the control of dual-use items?

This product is in the operation of import and export trade, electronic key enterprises must be able to operate

Q:Where is the filling portion of the valve?

The middle of the screw down valve handwheel saw packing gland generally about two screws fixed or fixed on the pressure cap down is the appearance of the packing is not seen inside if leakage occurs usually filler filler fastening screws, general pressure valves are graphite filler

Q:Look at the flow chart, some of the valves are marked with FV, and some are marked with XV. What does that mean?And what do you mean by the Cv value on the valve nameplate?I hope the heroes give a clear explanation ah, it is best to give an introduction of this knowledge of the web site oh.Thank again.

FV or LV on the flow chart, which represents the instrument bit number, FV is flow valve, and LV is level valve.The valve on the nameplate CV value, it is a measure of the size of the valve flow, it is the concept of 40 - 60 degrees Fahrenheit in the water, the pressure drop of 1 psi, in a valve opening per minute flow through the valve (U.S. gallons).

Q:What is a hot melt valve?

For the pillars of the temple are scattered on both sides,I first saw you when I was about to leave.The prey in the net is a star.Far away, where you are nowBecause I love you。For a very Chinese, this ha ha!

Q:What does "TD671F" mean?

TD671F is pneumatic clamp type soft sealing butterfly valveValve (Famen) is a control component in the fluid delivery system. It has the functions of closing, adjusting, guiding, preventing reverse flow, stabilizing voltage, shunting or overflow and releasing pressure.Valves used in fluid control systems, from the simplest stop valve to a very complex automatic control system used in a variety of valves, a wide range of varieties and specifications. Valves can be used to control air, water, steam, a variety of corrosive media, mud, oil, liquid metal and radioactive media and other types of fluid flow. The valve according to the material is divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316), chrome molybdenum steel, chromium molybdenum vanadium steel valves, valve, dual phase steel valves, plastic valves, non-standard customized valve material etc..