2019 China New Design Demand Valve for Scba Air Breathing Apparatus

Short Description:

Size:DN 50~DN 300

Pressure:PN10/PN16


Product Detail

Product Tags

Our team through professional training. Skilled professional knowledge, strong sense of service, to meet the service needs of customers for 2019 China New Design Demand Valve for Scba Air Breathing Apparatus, Winning customers’ trust is the gold key to our success! If you are interested in our products, please feel free to visit our web site or contact us.
Our team through professional training. Skilled professional knowledge, strong sense of service, to meet the service needs of customers for China Air Supply Valve and Air Demand Hose, “Good quality and reasonable price” are our business principles. If you are interested in our solutions or have any questions, remember to feel free to contact us. We hope to establish cooperative relationships with you in the near future.

Description:

The composite high-speed air release valve are combined with two parts of high-pressure diaphragm air valve and the low pressure inlet and exhaust valve ,It has both exhaust and intake functions.
The high-pressure diaphragm air release valve automatically discharges the small amount of air accumulated in the pipeline when the pipeline is under pressure.
The low-pressure intake and exhaust valve can not only discharge the air in the pipe when the empty pipe is filled with water, but also when the pipe is emptied or negative pressure occurs, such as under the water column separation condition, it will automatically open and enter the pipe to eliminate the negative pressure.

Performance requirements:

Low pressure air release valve (float + float type) the big exhaust port ensures that the air enters and exits at a high flow rate at a high speed discharged airflow, even the high-speed airflow mixed with water mist,It will not close the exhaust port in advance .The air port will only be closed after the air has been completely discharged.
At any time, as long as the internal pressure of the system is lower than the atmospheric pressure, for example, when the water column separation occurs, the air valve will immediately open to air into the system to prevent the generation of vacuum in the system. At the same time, timely intake of air when the system is emptying can speed up the emptying speed. The top of the exhaust valve is equipped with an anti-irritating plate to smooth the exhaust process, which can prevent pressure fluctuations or other destructive phenomena.
The high-pressure trace exhaust valve can discharge the air accumulated at high points in the system in time when the system is under pressure to avoid the following phenomena that may cause harm to the system: air lock or air blockage.
Increasing the head loss of the system reduces the flow rate and even in extreme cases can lead to a complete interruption of fluid delivery. Intensify cavitation damage, accelerate the corrosion of metal parts, increase pressure fluctuations in the system, increase metering equipment errors, and gas explosions. Improve the water supply efficiency of pipeline operation.

Working principle:

Working process of combined air valve when empty pipe is filled with water:
1. Drain the air in the pipe to make the water filling proceed smoothly.
2. After the air in the pipeline is emptied, the water enters the low-pressure intake and exhaust valve, and the float is lifted by the buoyancy to seal the intake and exhaust ports.
3. The air released from the water during the water delivery process will be collected in the high point of the system, that is, in the air valve to replace the original water in the valve body.
4. With the accumulation of air, the liquid level in the high-pressure micro automatic exhaust valve drops, and the float ball also drops, pulling the diaphragm to seal, opening the exhaust port, and venting the air.
5. After the air is released, water enters into the high-pressure micro-automatic exhaust valve again, floats the floating ball, and seals the exhaust port.
When the system is running, the above 3, 4, 5 steps will continue to cycle
The working process of the combined air valve when the pressure in the system is low pressure and atmospheric pressure (generating negative pressure):
1. The floating ball of the low pressure intake and exhaust valve will immediately drop to open the intake and exhaust ports.
2. Air enters the system from this point to eliminate negative pressure and protect the system.

Dimensions:

20210927165315

Product Type TWS-GPQW4X-16Q
DN(mm) DN50 DN80 DN100 DN150 DN200
Dimension(mm) D 220 248 290 350 400
L 287 339 405 500 580
H 330 385 435 518 585

Our team through professional training. Skilled professional knowledge, strong sense of service, to meet the service needs of customers for 2019 China New Design Demand Valve for Scba Air Breathing Apparatus, Winning customers’ trust is the gold key to our success! If you are interested in our products, please feel free to visit our web site or contact us.
2019 China New Design China Air Supply Valve and Air Demand Hose, “Good quality and reasonable price” are our business principles. If you are interested in our solutions or have any questions, remember to feel free to contact us. We hope to establish cooperative relationships with you in the near future.

  • Previous:
  • Next:
  • Write your message here and send it to us

    Related products

    • New Design Better Upper Sealing Double Eccentric Flanged Butterfly Valve with IP67 Gearbox

      New Design Better Upper Sealing Double Eccentri...

      Double flange eccentric butterfly valve is a key component in industrial piping systems. It is designed to regulate or stop the flow of various fluids in pipelines, including natural gas, oil and water. This valve is widely used because of its reliable performance, durability and high cost performance. Double flange eccentric butterfly valve is named because of its unique design. It consists of a disc-shaped valve body with metal or elastomer seals that pivots around a central axis. The disc ...

    • AWWA C515/509 Non rising stem Flanged resilient gate valve

      AWWA C515/509 Non rising stem Flanged resilient...

      Essential details Place of Origin:Sichuan, China Brand Name:TWS Model Number:Z41X-150LB Application:water works Material:Casting Temperature of Media:Medium Temperature Pressure:Medium Pressure Power:Manual Media:Water Port Size:2″~24″ Structure:Gate Standard or Nonstandard:Standard Product name:AWWA C515/509 Non rising stem Flanged resilient gate valve Body material:ductile iron Certificate:ISO9001:2008 Type:Closed Connection:Flange Ends Color:...

    • High Quality for U Section Double Flange Type Butterfly Valve API/ANSI/DIN/JIS/ASME

      High Quality for U Section Double Flange Type B...

      In an effort to finest meet up with client’s requirements, all of our operations are strictly performed in line with our motto “High High quality, Competitive Rate, Fast Service” for High Quality for U Section Double Flange Type Butterfly Valve API/ANSI/DIN/JIS/ASME, With a quickly enhancement and our customers come from Europe, United States, Africa and everywhere in the world. Welcome to go to our manufacturing unit and welcome your get, for more inquires be sure to never ...

    • Factory Selling High Quality Wafer Type EPDM/NBR Seat Fluorine Lined Butterfly Valve

      Factory Selling High Quality Wafer Type EPDM/NB...

      Which has a complete scientific excellent management technique, excellent quality and very good religion, we earn good name and occupied this field for Factory Selling High Quality Wafer Type EPDM/NBR Seat Fluorine Lined Butterfly Valve, We welcome new and old shoppers from all walks of existence to get hold of us for long term business enterprise interactions and mutual achievement! Which has a complete scientific excellent management technique, excellent quality and very good religion, we e...

    • Chinese wholesale China Wafer Type Butterfly Valve with Gear for Water Supply

      Chinese wholesale China Wafer Type Butterfly Va...

      “Quality 1st, Honesty as base, Sincere assistance and mutual profit” is our idea, in order to create consistently and pursue the excellence for Chinese wholesale China Wafer Type Butterfly Valve with Gear for Water Supply, We also make sure that your assortment will be crafted while using the optimum quality and dependability. Make sure you experience totally free to make contact with us for more information and facts. “Quality 1st, Honesty as base, Sincere assistance and mu...

    • High Quality China Water Exhaust Air Release Valve

      High Quality China Water Exhaust Air Release Valve

      owing to excellent assistance, a variety of high quality products and solutions, aggressive costs and efficient delivery, we take pleasure in an excellent popularity amongst our customers. We are an energetic business with wide market for High Quality China Water Exhaust Air Release Valve, Trust us, you might discover a far better solution on car parts industry. owing to excellent assistance, a variety of high quality products and solutions, aggressive costs and efficient delivery, we take pl...