Types of valves

1. 4-stroke cycle engine valves, Aspin valve, a cone-shaped metal part fitted to the cylinder head of an engine.
2. Ball cock, often used as a water level controller (cistern).
3. Ball valve, which is good for on/off control.
4. Bibcock, provides a connection to a flexible hosepipe
5. Blast valve, used to prevent rapid overpressures in a fallout shelter or a bunker.
6. Butterfly valve, particularly in large pipes.
7. Check valve or Non-return valve, allows the fluid to pass in one direction only.
8. Cock, colloquial term for a small valve or a stopcock.
9. Demand valve on a diving regulator.
10. Diaphragm valve, a sanitary valve predominantly used in the pharmaceutical industry
11. Double check valve.
12. A flow control valve maintains a constant flow rate through the valve.
13. Foot valve, a check valve on the foot of a suction line to prevent backflow.
14. Freeze valve, in which freezing and melting the fluid creates and removes a plug of frozen material acting as the valve.
15. Gate valve, mainly for on/off control.
16. Choke valve, Is a heavy duty valve which controls flow to a certain Flow Coefficient (CV) determined by how far the valve is opened, regularly used in the Oil industry.
17. Globe valve, which is good for regulating flow.
18. A heart valve regulates blood flow through the heart in many organisms.
19. Hydraulic valve (diaphragm valve).
20. A leaf valve is a one-way valve consisting of a diagonal obstruction with an opening covered by a hinged flap.
21. Needle valve for gently releasing high pressures.
22. Pilot valves regulate flow or pressure to other valves.
23. Piston valves
24. Plug valve, for on/off control.
25. A poppet valve is commonly used in piston engines to regulate the fuel mixture intake and exhaust. The sleeve valve is another valve type used for this purpose.
26. A pressure reducing valve (PRV), also called pressure regulator, reduces pressure to a preset level downstream of the valve.
27. A pressure sustaining valve, also called back-pressure regulator, maintains pressure at a preset level upstream of the valve.
28. Presta and Schrader valves are used to hold the air in bicycle tires.
29. A Reed valve consists of two or more flexible materials pressed together along much of their length, but with the influx area open to allow one-way flow, much like a heart valve.
30. A regulator is used in SCUBA diving equipment and in gas cooking equipment to reduce the high pressure gas supply to a lower working pressure
31. Rotary valves and piston valves are parts of brass instruments used to change their pitch.
32. A saddle valve, where allowed, is used to tap a pipe for a low-flow need.
33. A safety valve or relief valve operates automatically at a set differential pressure to correct a potentially dangerous situation, typically over-pressure.
34. Schrader valves are used to hold the air inside automobile tires.
35. Solenoid valve, an electrically controlled hydraulic or pneumatic valve.
36. Stopcocks restrict or isolate the flow through a pipe of a liquid or gas.
37. Tap (British English), faucet (American English) is the common name for a valve used in homes to regulate water flow.
38. Thermostatic Mixing Valve
39. A three-way valve routes fluid from one direction to another.
40. Some trap primers either include other types of valves, or are valves themselves
41. Vacuum breaker valves prevent the back-siphonage of contaminated water into pressurized drinkable water supplies.

Cute Valve

I think it's so cute. Do you think so.

Valve-Beautiful Valve

These are several kind of valve. I think they are beautiful. Do you think so?

Valve Clock

Do you think these valves are so cute? I think it's very nice and cute.

Valve

In mechanical engineering, a device for controlling the flow of fluids (liquids, gases, slurries) in a pipe or other enclosure. It exerts control by means of a movable element that opens, shuts, or partially blocks an opening in a passageway. Valves are of seven main types: globe, gate, needle, plug (cock), butterfly, poppet, and spool. Some valves operate automatically; check (or nonreturn) valves, for example, are self-acting valves that permit flow in only one direction. Safety valves open at a predetermined pressure; the movable element usually has a weighted lever or a spring strong enough to hold the valve closed until a particular pressure is reached.

Valve

What is Valve?

A flow-control device. Valves are used to regulate the flow of fluids in piping systems and machinery. In machinery the flow phenomenon is frequently of a pulsating or intermittent character and the valve, with its associated gear, contributes a timing feature.
The valves commonly used in piping systems are gate valves (Fig. 1), usually operated closed or wide open and seldom used for throttling; globe valves, frequently fitted with a renewable disk and adaptable to throttling operations; check valves, for automatically limiting flow in a piping system to a single direction; and plug cocks, for operation in the open or closed position by turning the plug through 90° and with a shearing action to clear foreign matter from the seat. Safety and relief valves are automatic protective devices for the relief of excess pressure.

Valve Introduction

A Valve element represents a component that will be inserted into the request processing pipeline for the associated Catalina container (Engine, Host, or Context). Individual Valves have distinct processing capabilities, and are described individually below.

The description below uses the variable name $CATALINA_HOME to refer to the directory into which you have installed Tomcat 5, and is the base directory against which most relative paths are resolved. However, if you have configured Tomcat 5 for multiple instances by setting a CATALINA_BASE directory, you should use $CATALINA_BASE instead of $CATALINA_HOME for each of these references.

Ball valve

are the three different types of rotary valves used in industrial plants. They are widely used in fluid-handling systems for flow control. These types of rotary valves are suitable for corrosive applications. They are used in detergent, pharmaceutical, chemical, rubber, pulp and paper plants, water treatment systems, textile mills and food processing plants, In general, ball valves offer many advantages when contrasted with other valve types. They provide superior ease of operation and can maintain and regulate high volume, high pressure and high temperature flow. Most ball valves offer rugged construction providing for a long service life, and a comparably low cost. Additionally, the design of the regulating element allows the valve to function without the complications of side loads, typical of butterfly or globe valves, and the valve design permits inspection and repair of seats and seals without removing the valves’ body from the line.

The world control valve market will amount to USDs 3,500,000,000 in 2007

Though current world control valve market indetermination, and have the decline, the profession high class analyst points out to control the valve prospect target is clear and definite, there is food processing, beverage in related development inside market, disinfect the article particularly the chemistry product keeps the high speed increases.Although traditional market, for example the chemical engineering keeps on with the deckle the reduces, the energy face the new investment with natural gas factory face to face, reform with modernize to replace, along with world petroleum price with the rise that refinement equip, control valve need will last to increase.
According to investigate the analysis, world control in the scope valve market, measures in the 2002 gross to near to 6,500,000,000 anticipate to will attain at the end of till 2007 35 the US$ of hundred million, the year average increases 3%.

API6Fa / API607 fire of ball valve fireproof test

CHAODA achieved the API 6Fa fireproof test and API 607 fire of big size ball valve fireproof test
CHAODA has passed the TUU API 6Fa and API 607 Fireproof Test for big size ball valve on May 10th,2006. CHAODA attatches great importance on product and service. By continously learning the advanced processing technology and managing method overseas, CHAODA has alreadry established perfect quality management and assurance system.
CHAODA has achieved the ISO 9001 Certificate in 1998, API 6D Certificate in 1999, CE Certification in 2002, the first domestic enterprise that gained the API 600 Certification in 2003,A PI 607 Fireproof Test Certification and AZ safety certificate in 2004 and TUV API 6Fa and API 607 Certificate for big size ball valve fireproof test in May 10th 2006.

Valve

1. Thermocouple

1) There mustn’t be any damage or peeling off for the cover of insulation wire or insulation sleeve, otherwise it will cause short circuit, which will influence the normal operation of the valve.
2) The fix-up of the thermocouple must dissipate heat to reduce the heat accumulation of fixing board and thermocouple copper. This can shorten the valve-closing time when there is sudden flameout.
3) The heated part of a thermocouple must be on the top of 2-3mm. Not to put the top into the fire, otherwise it may reduce the potential and shorten its life.

2. Solenoid valve

1) Prevent the valve from being strongly striken in the process of installation and shipment, otherwise it may influence its normal performance.
2) Before installation, the user must check the valve flatly on the test clamps with some prepressing. It is not allowed to be freely-flip. This assures that magnetic material won’t be damaged by colliding, otherwise it will influence the magnetic force.
3) Clean the impurity such as aluminum or oil left on the inner wall of the stove and the surface of the valve.
4) Keep the good connection of the solenoid valve and thermocouple. Prevent the safety protection device from operating abnormally because of too big contact resistance.
5) The warehouse of solenoid valves must be dry and ventilated and strictly prohibit extrusion.