The spool is a spherical butterfly valve, and the spool is a spherical butterfly valve that is circular and its opening and closing action is like a butterfly flapping. A bi-directional hard seal seal means that both the inlet and outlet of the media flow are sealed. If piping is installed, the flow direction of the medium will not be reversed. A ball valve of the same caliber is much more expensive than a butterfly valve, but this ball valve uses a two-way seal. Typical high pressure valves are spherical due to their good pressure resistance.

Second, the characteristics of the two-way hard seal ball valve

1. Not only the forward pressure can be reliably cut off, but also the reverse pressure can be reliably cut off, or the reverse pressure is much larger than the forward pressure.

2. On the two sealing surfaces of the sealing pair, according to different hardness requirements, advanced technologies are used, such as space plasma spraying, ether laser sputtering, vacuum protection deposition welding, martensitic stainless steel, austenitic stainless steel.

Can be made into steel and carbide.

Cermets, rhinestones and other functional gradient materials.

3. It self-centers and adapts, and automatically overtravels to compensate for wear.

4. When closing, the energy of the medium in the valve is utilized to the maximum extent, and a higher sealing specific pressure is automatically applied, so that the hard sealing pair can achieve reliable zero leakage.

5. There is no friction between the immediate closing and immediate opening seal pairs.

When open, the protruding portion of the spool will continuously shrink and retract; when open, it will shrink faster than it shrinks.

When closing, the protruding part of the spool will expand and advance continuously, and the expansion rate is greater than the forward speed at the beginning of closing, and the forward speed is greater than that at the end of closing.

It has an eccentric half ball valve, a glove valve and a wedge gate valve.

6. The main structure is similar to the butterfly valve, emergency shut-off valve and because the butterfly valve is short and small in size, large diameter, extra large diameter and extra large diameter valves can be manufactured.

It combines the functions and advantages of butterfly valve, half ball valve, gate valve and glove valve, and has its own powerful functions and advantages.

A series of advantages such as small size, light weight, transportation, installation, maintenance, convenient maintenance and reliable operation have become a major technological revolution in the valve industry.

Third, the advantages of two-way hard sealing ball valve

1. Innovative, reasonable design, unique structure, lightweight opening and closing speed.

2. Small operating torque, easy to operate, labor-saving and intelligent.

3. Can be installed and maintained in any location.

4. The seals can be replaced, the sealing performance is highly reliable, and a leak-free two-way seal is realized.

5. The sealant is resistant to aging, corrosion and has a long service life.