Q:What is the appearance of the valve with no stem valve?

2, classified by namePeso (1) vacuum valve: work pressure below standard atmospheric pressure valve is lower.Day (2): refers to the low pressure valve nominal pressure PN, a, 1.6Mpa valve.Peso (3) pressure valve: 2.5,4.0,6.4Mpa valve nominal pressure PN.Peso (4) high pressure valve: refers to the worker called PN 1080MPa pressure valve.Peso (5) high pressure valve: refers to the nominal PN, a100Mpa valve.3, according to the work temperature classificationPeso (1) ultra low temperature valve: used for medium temperature valve, <-100 tons or so.Day (2) low temperature valve: for medium temperature of -100 DEG a valve, t, a, -40 degrees celsius.The peso (3) with the valve: the valve at room temperature is -40 DEG C, a, t, a, 120 degrees Celsius temperature.The peso (4) at the temperature valve: used at medium temperature of about 120 degreesDay (5) high temperature valve: used for medium temperature, T> valve, about 450 degrees celsius.

Q:Chlorine valve, valve stem, valve spool are selected what material is better?

In fact, ordinary carbon steel, but chlorine special valve sealing better, specific you can ask about the production of chlorine valve manufacturers, chlorine, many things are national standard parts, very good buy

Q:How to catch carp reservoir spring stem

The general use of bionic bait, fishing and fish, such as perch culter carnivorous fish for.

Q:When the butterfly valve is installed, can the stem be downward? What are the criteria?

Not only can the transmission device at or above the level of 90 degrees, the transmission device is not allowed to download is in the valve below, it's too dangerous. This does not require any standard.

Q:When the valve is installed on the horizontal pipe, the ball valve, valve stem, globe valve stem, butterfly valve stem and other direction can go down? People stand under the action. Higher pipe

To the first party to do, or as requested, the handle is not down, easy to pass the acceptance. Operation is inconvenient, can add chain wheel or add operation platform.

Q:What's the difference between the stem and the pole?

Valve stem is iron rod, hardness is very high, the overall length is not long, is not conducive to throwing, mainly for bait, let the bait automatically fall to the designated depth for search. The pole is mainly used for throwing, relatively lighter, elastic, and the length is very long.

Q:Butterfly valve can not remove the butterfly plate, butterfly plate is fixed with pins and valve stem

Summary: if the repair, then suggest buyers change itOf course, if the pin is easily removed.

Q:Pipeline ball valve in the valve stem generally choose what material?

Stem material for line ball valves:Anti sulfur ball valve for floating ball valveChinese GB 1Cr13 1Cr18Ni9The United States ASTM A276-410 A276-321

Q:What's the fishing stem like?

The rod length should not be too long, otherwise it is not conducive to the operation in the boat, generally choose 2.1 or 2.4 meters, if fishing row seam 1.8 meters can be, as long as the toughness of the rod is enough, with a good point of the wheel can be.

Q:Ball valve stem 90 degrees milling flat, how to process?

Batch processing:1 use special clamps and vertical clamps2 machine tools: horizontal milling machine3 cutter: