The inner leakage is generally a damage of the valve seat or the sealing surface of the valve core. This can grind the valve seat or the sealing surface of the valve core, but there is also an special case where the valve stroke may not be set properly if it is electric or pneumatic. Leakage to see where leakage, if the valve body leakage can only change the valve.
Inside leakage should be a problem with the sealing surface, the sealing surface treatment to see what effect.
If the leak is missing, the valve is different and the leak location is different.
If there is leakage at the packing, tighten or replace the packing. We often use pressure plugging when we cannot stop.
There are many leakage points in the globe valve. In most cases, the leakage is from the gland. If the gland is opened to replace or replace the filler, the gland should be tight and it should not leak. The inner leakage is that the sealing surface on the upper surface of the valve plug is broken, but actual experience tells us that sometimes the inner leakage may have a hard object stuck on the valve core and cause inner leakage. The specific method is to open the valve and then close the valve. , A few times to flush hard things back and forth on it. If it is the valve itself, it is necessary to select the appropriate time to replace the valve.
Special Custom High Speed Door
Our company is a door manufacturer integrating R&D, design, manufacturing, sales, installation and after-sales service. Our products include PVC soft-curtain high speed rolling door , PVC Curtain swing door, self repairing high speed door , turbine hard fast shutter door, automatic sliding doors, automatic swing doors, revolving automatic doors, automatic hospital doors,and folding automatic doors.
Nowadays, many companies like to buy PVC soft-curtain high speed rolling doors when purchasing PVC fast-rolling doors. What are the characteristics and advantages of it that make everyone love it? Let's talk about the overall advantages of PVC fast roller shutter doors.
Features and advantages of PVC fast roller shutter doors:
1.Good UV protection effect of PVC fast roller shutter door
The UV-proof door curtain of PVC fast rolling door, as the screen of the welding welding area, can filter harmful UV rays through the scenery, which is convenient for viewing the working situation, and prevents the flying and diffusion of sparks, smoke, debris, etc., to protect the safety of personnel. prevent fire.
Sound insulation effect PVC fast roller shutter door curtain can reduce noise decibels, prevent noise diffusion, reduce noise pollution, and be used as a machine compartment screen to improve the sound insulation effect of operations.
2. Good cold resistance effect of PVC fast roller shutter door
In the case of low temperature, the PVC fast rolling shutter can still maintain a high degree of softness, making it convenient for people and vehicles to enter and exit, and has a good isolation effect. It can prevent the loss of air conditioning and heating to a greater extent and save energy.
3. Good airtight performance of PVC fast roller shutter doors
A sealing strip with better sealing performance is installed in the track of the fast roller shutter door. With the weight of the door curtain itself, it will not bend and affect the normal operation under the wind speed of the harsh weather.
4. Good thermal insulation and energy saving effect of PVC fast roller shutter doors
PVC fast rolling shutter not only consumes no electricity, has no noise, no moving components, improves freezing efficiency, but also reduces the number of revolutions of the freezer, saving up to 50% of electricity.
5. Good anti-static effect of PVC fast roller shutter door
The curtain of the PVC fast rolling door does not produce static electricity after friction, which is suitable for the factory effect where static electricity is strictly prohibited.
Widely used in office buildings, public buildings, hotels, hospitals, supermarkets and factories in Asia, Eastern Europe and Africa. The specific requirements of an effective door system in different situations (eg clean room, operating room) may vary in different parts of the world.
Special Custom High Speed Door, Special Custom Rapid Door, Special Custom Fast Door
SHENZHEN HONGFA AUTOMATIC DOOR CO., LTD , https://www.hongfafd.com