EPDM Bellows Double Sphere Flanged Rubber Expansion Joints for Flexibility

• Customization: Available
• Media: Pinless
• Driving Mode: Lever, Handle, Gear Operator, Pneumatic Actuator
• Work Pressure: Low Pressure (Pn<1.6mpa)
• Working Temperature: Normal Temperature (-40°C<T<120°C)
• Material of Seal Surface: Soft Sealed
• Valve Body: Casting
• Standard: En558;API609;DIN3202;ISO5752;BS5155;Awwa
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Body: Carbon Steel/CF8
• Seat: EPDM/PTFE
• Customized Support: OEM, ODM
• Transport Package: Plywood Case
• Specification: DN40-DN1000
• Trademark: CVVT
• Origin: China
• Production Capacity: 1000000units

Product Description

Product Description

Product Parameters

Installation Instructions

Before installation, weld the flanges vertically (Note: Ensure the flange waterline faces outwards and leave enough installation distance between the flanges for the rubber flexible connection).
Connect the flanges at both ends of the rubber flexible connection to the pipe end flanges using fasteners (Note: Use the diagonal method to parallelly tighten the nuts and avoid pressing them unevenly).
After installation, perform a water pressure test on the rubber flexible connection. After the pressure test and weighing, tighten the connecting bolts sequentially using the same method in step 2 to prevent local leaks.

Notes

The installation length of the rubber flexible connection is calculated from the outer side of the rubber sealing surfaces at both ends of the sphere, and the product does not have a flow direction.
It is prohibited to perform the water pressure test with any loose connecting bolts.
It is prohibited to open the connecting bolts between the rubber flexible connection and the pipe during the pressure test and operation stages.
It is prohibited to pre-stretch the installation by exceeding the natural length of the rubber flexible connection.
The pipeline must have fixed brackets or supports, and the force of the fixed brackets must be greater than the axial force. When installed vertically or overhead, corresponding fixed brackets and stress supports should be installed at both ends of the product to prevent pulling due to working pressure.

 

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FAQ

1) Q: Are you a manufacturer or trading company? 
A: CVVT Valve is a professional valve manufacturer with experienced R&D team.

2) Q: What kinds of valve can you supply?
 A: We can supply butterfly valve, ball valve, check valve and so on.

3) Q: Do you have any certificate for the valves?
A: Yes, we have , SGS , TS and so on.

4) Q: What's the delivery time?
A:Generally it is 10 days if the goods are in stock.   or it is 35 days if the goods are not in stock, it is according to quantity.
 
5) Q: What are the countries or regions you supply valves? 
A: CVVT valves have been supplied to USA, Europe, Russia Malaysia, South Africa and so on.

6)Q: What is your terms of payment ?
A: Payment<=10000USD, 100% in advance.   Payment>=10000USD, 30% T/T in advance ,balance before shipment.

7)Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.