High Performance Heater Water Pipe Small Occupation of Space Potable Water Expansion Tanks

Expansion Vessels - Why?

In practice water cannot be compressed and therefore any increase in water volume must be accommodated in an expansion vessel designed and sized for that purpose. Naturally, as water heats up, it expands. This expanded water has to go somewhere. In an open type system the open expansion tank situated at the highest point of the system would accommodate this extra volume. A closed type system does not have an open fixture such as described above. Hence, a correctly sized Dezhi/Aqua Leader expansion vessel is necessary. When properly sized, the Dezhi/Aqua Leader Expansion Vessel will accommodate the expansion of the fluid during the heating or cooling cycle without allowing the system to exceed the pressure limits of any of the components in the system.

Configuration and Features

Dezhi/Aqua Leader  Expansion Vessels incorporate a diaphragm/bladder arrangement which provides a flexible barrier between the system fluid and the precharged air in the vessel. As the system water expands, the bladder also expands pushing against the precharged air cushion. This is how the expansion is accommodated in a closed-loop system.

Standard construction is carbon cold pressed steel with natural rubber or EPDM membranes.

Temperature limits are 10oC to 99oC.

Working pressures vary from 3 Bar to 35 Bar depending upon which vessel is selected. Higher pressure ratings of 45 and 50 Bar are available if required.

Other Features

• Replaceable bladder

• Threaded connections - stainless.

• Pre-set pressure 400KPa - variable.

• Wall mount bracket available for 8-36 litres.

• Also available in stainless steel.

• Relief valve supplied loose to suit system pressure - please specify.

Sizing for Expansion Vessels

In order to select a suitably sized expansion vessel, the following information is required:

• Total system water volume in litres.

• Temperature of water when system is filled (in oC) and average maximum operating temperature (in oC).

• Minimum operating pressure in kPa and maximum operating pressure (10% below relief valve, in kPa).

• Which level of the building it will be installed and number of levels there are above it?

Suggested Specification

Expansion Vessels shall be the closed type similar to Dezhi/Aqua Leader  (available from Taizhou Tianyang Electrical Co., Ltd ) or approved equal and suitably sized to suit the system temperature and pressures likely to be encountered. Vessels construction to be fully welded and sealed steel construction, complete with integral EPDM rubber liner to maintain the water within the system without exposure to air or contamination. Each Vessel to be supplied with a suitably safety relief valve vessel must have a replaceable bladder.

Taizhou Tianyang Electrical Co., Ltd reserves the right to make changes without notification.

TY-11 Product Advantages

1.Diaphragm structure makes the effective volume larger.
2.Contact with the medium part are plastic,rubber, stainless steel 304.Highest level of health and completely conform to the
requirements of the drinking water.
3.we can customize the products working pressure 16 bar according to customer requirements
4 .Three lavers of paints praying. can dea with the bad outside and the wet indoor environment.
5.According to the demand of customers to configure different tank.And cope with different working environment.
6.Introduce advanced processing technology from ltaly and imported advanced equipment production from Germany The test of products are all scrupulously passed the 1S09001 management system.
7.Patent of valve structure for Tian Yang and don't need maintenance during lifetime. No the trouble of product maintenance
8.After testing of one million times and has 10-15 years of service life.
9.Vertical installation.small occupation of space,easy installation.  

    Taizhou Tianyang Electrical co.,LTD. Is located in Shangma industrial Zone,Shitang Town,Wenling City,Zhejiang Province,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 0.5 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.


  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:35-45 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: 90000~120000 pieces of  Pressure Tank per month