Axial flow check valve

Nominal diameter: 1/2”~ 60” Pressure rating: class 150~class 2500 Product features: ①National Energy Bureau and CNPC “Oil And Gas Pipe Key Equipment Localizing Manufacturing Project” product; ②National patent sealing technology, zero leakage reliable sealing; ③Single-direction backflow prevention, pump or compressor protection; ④High flow capacity, low pressure drop, reduced pump or compressor energy consumption.
Manufacturer: Dipper Valve
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Dipper axial flow check valve - has been involved in National Energy Bureau and China National Petroleum Corporation “Oil and Gas Pipe Key Equipment Localizing Manufacturing Project”. Main technical parameters of Dipper axial flow check valve meet the advanced level compared with products of the same kind made overseas.

---Verified By Oil and Gas Pipe Key Equipment Localizing Manufacturing Project

 


Type:  ACHH (Metal Seat)/ACHS(Compound Seat)/ACHA(Adjustable And Slow Closing)

Design specifications:  API 6D, ANSI B16.34

Nominal diameter:  DN15~DN1500 (NPS 1/2”~NPS 60”)

Pressure rating:  PN1.6~PN42.0MPa(Class 150~Class2500)

Actuator:  N/A

 


Advantages of Dipper axial flow check valve:

1. National Innovative Patent: Compound Piston Axial Flow Check Valve (No.ZL 2011 1 0050617.0)

 2. National Utility Model Patent: Load-bearing Sealing Ring on One Piece Axial Flow Check Valve Body Design (No.ZL 2007 2 0080815.0)

 3. Dipper axial flow check valve has been involved in National Energy Bureau and China National Petroleum Corporation “Oil Aand Gas Pipe Key Equipment Localizing Manufacturing Project”.

 4. Dipper axial flow check valve has been supplied in amount of 14 PCS, valve size from 32” to 36”, pressure class 600, to the outlet of compressor involved in “Central Asia Natural Gas Engineering Project” of National Priority Energy Strategy Engineering.

 5. The first class products registered by China National Petroleum Corporation

 6. The first class products registered by China National Offshore Oil Company

 7. The products registered by China Aviation Oil Corporation/The recommend products of China Aviation Oil

 8. The products registered in Global Supplier Network of Sinopec Corp.

 9. Sichuan best product

Product description of axial flow check valve:

The axial flow check valve is a protective device designed to prevent the back flow, it is the preferred solution for critical non-return application such as the protection of rotating equipment and systems where low pressure loss, stable operation and dynamic behavior are essential. The axial flow check valve operates when the medium flows to the piston, the flow will have resistance, some power will be converse to PV to push the piston and open the axial flow check valve. With the reduction of flow amount, the force of spring and medium back pressure will effect to close the valve to prevent return flow. With the zero leakage performance achieved by the use of the consummate sealing technology, as well as the unique venture streamlined flow path design, the axial flow check valve is preferred to ordinary check valve, especially for its characteristics such as low flow resistance, good flow pattern, rapid response to changes in medium pressure, small overall dimensions.

 Axial flow check valve is the preferred solution for industry and pipeline application.

 Axial flow check valve is suitable to service at the outlet of petroleum pump or the outlet of natural gas compressor.

Performance features of Dipper axial flow check valve:

1. National Patent- Load-bearing Sealing Ring on One Piece Axial Flow Check Valve Body Design and Technology

 2. Compact structure, installation at any angle

 3. Streamlined flow path, low noise, energy saving, environmentally friendly

 4. Long service life, smooth valve opening and closing, reliable operation

 5. Opening and sealing at low pressure-priority characteristics for choosing an axial check valve meeting firefighting requirements

 6. Zero leakage

 7. Various type of piston structure, wide application

Typical application (See more on Reference Page):

1. Project: China to Central Asia Natural Gas Pipeline Engineering

End user: PetroChina

 Installation at: Uzbekistan/Kazakhstan

 Delivery year: 2013

 Nominal diameter: 32” to 36”

 Pressure rating:  class 600

 Quantity: 14 PCS

 

2. Project: 3rd Phase of West to East Natural Gas Transmission Engineering Project

End user: PetroChina

 Installation at: China

 Delivery year: 2010 ~ 2013

 Nominal diameter: 2” ~ 28”

 Pressure rating: class 150 ~ class 900

 Quantity: 242 PCS

 

3. Project: 2nd Phase of West to East Natural Gas Transmission Engineering Project

End user: PetroChina

 Installation at: China

 Delivery year: 2010 ~ 2013

 Nominal diameter:  2” to 36”

 Pressure rating:  class 150 ~ class 600

 Quantity:  304 PCS

 

4. Project: China to Burma Crude Oil/Natural Gas Pipeline Engineering Project

End user: PetroChina

 Installation at: China

 Delivery year: 2013

 Nominal diameter: 2”~20”

 Pressure rating: class 150 ~ class 900

 Quantity: 119 PCS