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Introduction of several types of gate valves

 

flange gate valve (3) flange gate valve (2)

Introduction of several types of gate valves
(1) Wedge type single gate valve
The structure is simpler than the elastic gate valve;
② At high temperature, sealing performance is not as good as elastic gate valve or double gate valve;
③ Suitable for high temperature medium which is easy to coking.

(2) Flexible gate valve
It is a special form of wedge type single ram. Compared with wedge gate valve, the sealing performance is good at high temperature, and the gate plate is not easy to be stuck after being heated; Suitable for steam, high temperature oil and oil and gas and other media, and suitable for frequent switching parts. It is not suitable for medium which is prone to coking.

(3) Double gate valve
(1) Sealing performance is better than wedge gate valve, such as the sealing surface of the oblique Angle and seat is not very accurate, still has good sealing;
② After the sealing face of the gate is worn, the metal pad at the bottom of the spherical center can be used instead of thicker. Generally, it is not necessary to surfacing and grinding the sealing face, which is difficult to do with single gate or elastic gate.
③ more parts than other forms of gate valves;
(4) In addition to suitable for steam, oil and other media, but also suitable for the parts of frequent switch and the sealing surface wear greater media, not suitable for the media easy to coking.

(4) Parallel gate valve
(1) The sealing is worse than other forms of gate valves;
(2) Suitable for medium with lower temperature and pressure;
(3) The two RAMS fixed with lead wire are easy to fall off and unreliable in use, except for the two RAMS fixed with fixed plates.
The processing and maintenance of the sealing surface of the gate plate and seat are simpler than other forms of gate valves.

Nortech is one of the leading industrial valve manufacturers in China with quality certification ISO9001.

Major products: Butterfly ValveBall Valve,Gate ValveCheck ValveGlobe Vavlve,Y-StrainersElectric Acurator , Pneumatic Acurators .


Post time: Aug-11-2021