Concentric Butterfly Valve
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Concentric Butterfly Valve

Concentric butterfly valve is also known as central butterfly valve. Its stem, disc and body are in one center; Concentric butterfly valve is an intelligent rotary valve °, The water can flow through both sides. It has the advantages of compact structure, reliable sealing and long service life. The concentrated butterfly valve produced by milestone valve company has stable performance and can be widely used in water supply and drainage system to adjust or cut off medium, chemical industry, food and other industries.

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Product Description

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1.Introduction of Concentric Butterfly Valve

Concentric butterfly valve is also known as central butterfly valve. Its stem, disc and body are in one center; Concentric butterfly valve is an intelligent rotary valve °, The water can flow through both sides. It has the advantages of compact structure, reliable sealing and long service life. The concentrated butterfly valve produced by Milestone Valve Company has stable performance and can be widely used in water supply and drainage system to adjust or cut off medium, chemical industry, food and other industries.


2. Technical Parameters of Concentric Butterfly Valve

Type of Valve
Concentric butterfly valve
DN
DN50~DN1200
PN(MPa)
1.0~1.6
Design Temperature Range
-15℃~150℃
Applicable Medium
Fresh water, Sewage, seawater, gas etc
Connection type:
Flanged, Wafer ,Butt weld, Lug
Actuator type
Manual drive, Pneumatic, Hydraulic or electric Actuator
Sealing
Metal Hard Seal, Soft seal

Spare Parts
Material
Body

Gray Iron, Ductile Iron, Al-bronze, 
Stainless Steel, Carbon steel

Disc
Ductile iron, Stainless Steel, Al-bronze
Shaft
Cast Iron, Stainless Steel
Seat 
Rubber
SealingO-ring, NBR, EPDM, FKM



3.Features of Concentric Butterfly Valve

1) The Concentric butterfly valve has the advantages of novel and reasonable design, unique structure, light weight and quick opening and closing.
2) The Concentric butterfly valve has the advantages of small operating torque, convenient operation and labor-saving dexterity.
3) The centralized butterfly valve can be installed at any position and is easy to maintain.
4) The Concentric butterfly valve seal can be replaced, with reliable sealing performance and zero leakage of bidirectional seal.
5) Concentric butterfly valve sealing material has the characteristics of aging resistance, weak corrosion resistance and long service life.


4.Adopts Standard of Concentric Butterfly Valve

Design standard: GB / t2238-1989
Flange connection size: GB / t9113.1-2000; GB/T9115.1-2000; JB78
Structural length: GB / t12221-1989
Pressure test: GB / t13927-1992; JB/T9092-1999



5.Difference Between the Application of Concentric Butterfly Valve and Eccentric Butterfly Valve

The concentrated butterfly valve consists of rubber seal butterfly valve, carbon steel or stainless steel valve plate and stem. It is suitable for regulating flow and intercepting medium on water supply and drainage and gas pipelines such as food, medicine, chemical industry, petroleum, power, textile and paper.
When to use Concentric butterfly valve, when to choose double eccentric butterfly valve or triple eccentric butterfly valve, mainly depends on the use habits and budget. If it is not an extreme working condition, you can generally choose concentrated butterfly valve, because the structure of concentrated butterfly valve is simple and the price is relatively economic.


6. Packaging and Delivery


7. FAQ

1. Can i have a sample order for valve ?
A: Yes, we welcome sample order to test and check the quality, Mixed sample are accepted.
2. Do you have any MOQ limit for valve order ?
A: Low MOQ, 1 PC for sample checking is avaible.
3. Could you offer OEM service ?
A: Yes, OEM is availble.
4. How about the payment ?
A: We normally accept 30% deposit, and balance will be paid before shipping. L7C is OK
5. Whafs the delivery time of your butterfly valves?
A: For most of the sizes,DN50-DN600,we have stock of valve parts,it*s possible to deliver in 1-3 weeks,to nearest seaport Tianjin.
6. Whafs the warranty of your products?
A:We normally offer 12 months of warranty in service or 18 months since shipping date.
7. What is your products standardization?
A: GB/T12238-2008, JBfT 8527-1997, API 609,EN 593-1998, DIN 85003-3-1997


8.Contact Information

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