HVAC System ----------- HVAC Water Chillers

[...] piping system. In other words we can say that Check valves are basically backflow preventers.Valve Check continues to work even if plant loses it power, [...]

[...] is self actuated ,one way ,Non-return valve which allows flow in one direction only.Butterfly check valves have a same disk and seat  arrangement similar as in butterfly control valves. Flow [...]

[...] which allows full, unobstructed flow and automatically closes as pressure decreases. These check valves or non return valves (swing type check valve) are fully closed when the flow reaches zero and [...]

[...] Normal 0 false false false EN-US X-NONE AR-SA Both flow valves,Globe valve and gate valve have similar external housing but operational functions of both differ little. The main [...]

[...] Normal 0 false false false EN-US X-NONE AR-SA What is a Gate Valve A gate valve is a linear motion valve used to start or stop fluid flow. The name gate is derived from the [...]

[...] . At the pump discharge side,this valve is often used in combination with check valve and gate valve for better operation and isolation. Principle of globe valve operation The essential principle [...]

[...] because of the low pressure drop across the valve. Application of swing check valves along with gate valve is because of relatively free flow in gate valve.They are recommended for lines having low [...]

[...] or start or regulate fluid flow.The function of this type of valves,ball is same as of disk in globe valve. When the valve handle is turned to open the valve, the spherical ball rotates to a position [...]

[...] Normal 0 false false false EN-US X-NONE AR-SA Both flow valves,Globe valve and gate valve have similar external housing but operational functions of both differ little. [...]

[...] Normal 0 false false false EN-US X-NONE AR-SA What is a Globe Valve A globe valve is a linear motion valve used to stop, start, and regulate fluid flow.The globe valve disk can [...]

[...] to vibration in the partially open  state. It is more subject to seat and disk wear than a globe valve. Repairs, such as lapping and grinding, are generally more difficult to accomplish. Disk Design [...]

[...] of a flexible tube (rubber tubing) that is mechanically pinched from the outside of the valve body. Pinch valves are suitable for on-off and throttling services. However, the effective [...]

[...] ) e.g Stem and disc ,seat and sleeve of valve stem actuator of valve packing of valve 1. Valve Body Valve body, sometimes called the shell, is the primary pressure boundary of a valve. It serves [...]

[...] from its flexible disk, which mates with a seat located in the open area at the top of the valve body to form a seal. Construction & Working Principle of Diaphragm valve Working Principle of [...]

[...] the bonnet. Gate Valve Seat Design Seats for gate valves are either provided integral with the valve body or in a seat ring type of construction. Seat ring construction provides seats which are either [...]

[...] Normal 0 false false false EN-US X-NONE AR-SA What is a Check Valve or Non-return valve (NRV)? Check valves or non-return valves are self actuated valves and [...]

[...] Normal 0 false false false EN-US X-NONE AR-SA What is Swing Check Valve ? Swing check valve is a self actuated back flow preventer or uni-directional valve which allows full, unobstructed [...]

[...] Normal 0 false false false EN-US X-NONE AR-SA What is a Butterfly Check Valve? Butterfly valve is self actuated ,one way ,Non-return valve which allows flow in one direction [...]

[...] pumps for flow control. At the pump discharge side,this valve is often used in combination with check valve and gate valve for better operation and isolation. Principle of globe valve operation The [...]

[...] by the lower operating costs.  Larger HVACwater chillers are almost always water cooled .HVAC engineers and technicians feel easy with maintenance free or less maintenance equipment. Water cooled [...]

[...] to have complete understanding of valves parts .Piston check valve drawing also helps HVAC engineers during the maintenance of valves. Application/Use of Piston Check Valve Piston Check valves [...]

[...] supplier to have complete understanding of valves parts .Stop check valve drawing also helps HVAC engineers during the maintenance of valves. [...]

[...] rings are replaceable, but the valve must be removed from the line to make the replacement. HVAC engineers should also demand valve drawing and complete maintenance schedule from supplier to keep it [...]

[...] valve is linear motion valve used to make relatively fine adjustments in the amount of fluid flow. The distinguishing characteristic of a needle valve is the long, tapered, needle like [...]

[...] What is a Globe Valve A globe valve is a linear motion valve used to stop, start, and regulate fluid flow.The globe valve disk can be totally removed from the flow path or it can completely close the [...]

[...] pressure boundary. The valve disk provides the capability for permitting and prohibiting fluid flow. With the disk closed, full system pressure is applied across the disk if the outlet side is [...]

[...] valve A diaphragm valve is a linear motion valve that is used to start, regulate, and stop fluid flow. The name is derived from its flexible disk, which mates with a seat located in the open area [...]

[...] , the disk lifts perpendicularly away from the seat so that an annular orifice appears. 4. Valve Disk and Valve Seat For a valve having a bonnet, the valve disk is the third primary principal [...]

[...] check valves are available in either Y-pattern or straight body design.In either style, the valve disk and hinge are suspended from the body by means of a hinge pin. Seating is either metal-to-metal [...]

[...] be started stopped, diverted, and/or regulated or throttled. Use of Valve or Applications of valves Valve is found everywhere. Applications of valves have great variety and breath. Where there is flow [...]