Cuztomized Export Model is the model for Export Only,In order to protect our oversea area dealers ,no sales to inside China ,only direct export to authorized countries.
Please contact Mr.Tom Lee For details
Yours Attentions ,please
There are two main types of Expansion Vessel dependent on what application you have. You will normally find a Red Vessel (Heating Vessels) to be used on a Sealed System Heating application whilst the most common use for a Blue Vessel or White Vessel (Potable Vessels) would be in a potable application such as an Unvented Water Heater or a Pumped System.
Potable Expansion Vessels are built from different materials than Heating Expansion Vessels to ensure that the water is contaminant free and safe for human consumption. Expansion Vessels operate on the basis that the internal chamber is separated by a rubber membrane, inside this membrane sits the water and surrounding this sits a pocket of air--For some models are filled with nitrogen gas up to 99.9% purified. As the water inside the sealed system is heated the water pressure increases, as water is non compressible the air inside the air chamber of the Expansion Vessel will become compressed thus leaving the system safe from over pressurization. As water can increase by 4.5% volume when heated from 0-100 DegC an Expansion Vessel is a vital part of any sealed heating system.
Expansion Vessels can be supplied with a replaceable or fixed membrane depending on your preference and the pressure within the Vessel is set using a Schrader Valve just like you would find on a bicycle tyre.
Expansion Vessels are commonly used on pumped systems to remove the requirements of a continuous pump. This works as the user will set a low and high pressure on the pump settings, when the water pressure reaches the lowest setting the pump will engage and fill the Expansion Vessel to the high pressure point and stop. Once this cycle has been completed the Expansion Vessel puts the stored water under pressure ensuring higher pressure water. This will continue until the Expansion Vessels pressure drops to the lower point and the pump starts its cycle again.
At Taizhou Tianyang Electrical Co.,LTD, we manufacture Expansion Vessels according to afferent requirements from other clients , to help you find the vessel you require please find below contact information of our sales staff,we can make our best offer to you as soon as your details requirements come.
Please find the open model by referring to our catalog.
We have a lot of stock for fast shipment with Dezhi/Auqa Leader Brand.If you have your own drawing for tanks or your own trade mark for OEM Service,feel free to contact us.
Cuztomized Export Model is the model for export ONLY,In order to protect our area oversea dealers ,no sales to inside China ,only direct export .
Description:
An expansion vessel, pre-charged with nitrogen instead of compressed air, to meet the requirements of most heating systems and for use with potable water. The Expansion vessels for potable water systems are manufactured to meet the requirements of PED 97/23/EC Directive and BS EN 13831:2007 'Closed expansion vessels with built in diaphragm for installation in water'.
Why use Nitrogen Instead of Compressed Air?
The oxygen in compressed air permeates through the membrane, reducing the pre charge pressure. During
normal function, oxygen oxidizes the membrane in the vessel, causing under-inflation and deterioration of the rubber.
Dry nitrogen by comparison maintains proper inflation pressure longer, will not corrode the inside of the vessel
and extends valve and expansion vessel life. Industry research indicates that oxidative aging is one of
the primary causes of decreased vessel life. Oxidative aging that is caused by the diffusion of oxygen from the
pressurized air cavity of the vessel to the outside atmosphere.
Tests have shown that if vessels are inflated with nitrogen, there is a significant reduction in failure.
How does Nitrogen help?
While both nitrogen and oxygen can permeate rubber,nitrogen does it much more slowly. It might take 6 months
to lose 2psi with nitrogen, compared to just a month with air. And nitrogen is far less reactive. It doesn't cause rust
or corrosion on steel or aluminum, and it doesn't degrade the rubber seal used in the pre charge valve extending valve core life and help prevent core leaks.
Technical Parameter
| Name |
Potable Water Expansion Vessel |
| Application |
For sanitary hot water systems |
| Max. working pressure |
10 bar |
| Max. temperature: |
70°C |
| Factory air pre-charge: |
4.0 bar nitrogen |
| Capacity: |
400 Ltr |
| Useful Capacity |
320 Liter |
| Shell |
Carbon steel |
| Connections |
G 1 1/2" Carbon steel |
| Diaphragm |
Replaceable |
| Membrane Material |
Synthetic rubber compound |
| Vessel Diameter |
740 mm |
| Vessel Height |
1245 mm |
| Contact Person |
Mr.Tom Lee |
Technical Drawing For Your Reference
Different Optional Flange For Your Reference
Company profile
Taizhou Tianyang Electrical co., LTD. Is located in Shangma industrial Zone, Shitang Town, WenlingCity, Zhejiang rovince, covering an area of 15, 000 square meters. Our Company has over 30 years experience in mold design and exploition. "DEZHI"and "AQUALEADER" are our proprietary brand of our company. We have produced pressure tank for more than 20 years. Available volumes range from 0.15 to 1500 liters. and working pressure from 4 bar to 25bar. Our products are applied to pump systems. Our products are exported to numerous overseas clients. We can custom design and manufacture products according to client-supplied requirements.
We adhere to the business philosphy"Credibility, Quality and service", our scientific management is based on the domestic market, but facing to the world. Warmly welcome customers both domestic and from abroad. We sincerely hope to cooperate and develop together to create a better future.
Taizhou Tianyang Electrical Co., Ltd. Is always your most loyal partner.
I would like to take this opportunity to introduce our company to you. I am contacting you on behalf of
Taizhou Tianyang Electrical Co., LTD.
We are the factory from China for making Pressure Tanks for Fire Protection, Residential Water and Irrigation, Sport Turf and Landscape Irrigation, Agriculture and Horticulture Irrigation, Water Filtration, Treatment & Recycle, Solar and Stock Water System, Rain Water Harvesting, Pump Systems. Based on ISO quality management system, we have obtained CE, KC, ISO 9001, ISO14001, OHSAS 18001, SGS, Water Mark, and Wras Certificates for our company & our Pressure Tanks. Welcome to visit
Taizhou Tianyang Electrical Co., LTD when it is more convenient for you.
FAQ Details:
1. Q: What is your MOQ of this item?
A: We are a factory, have stock. 1PCS is ok!
2. Q: What is the delivery time?
A: 7-25 days after receiving orginal L/C or deposit by TT.
3. Q: Is it all right to make customer's own brand name?
A: Yes we supply OEM service. Please send us a authorization doc.
4. Q: Where is your Loading Port?
A: Ningbo, Zhejiang, China.
5. Q: What are your payment terms? For Bulk Quantity Purchase
A: 30% deposit and balance T/T against copy of Bill of Lading or L/C at sight.
For Samll amount Trial Order, Please arrange the full payment
6. Q: What is your company's available production capacity?
A: 50000~60000 pieces of Pressure Tank per month.
Welcome To Visit Us
Please do not hesitate to contact me if you have any questions.
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