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Dn200 Pn16 Astm A351 Cf8m Female Npt Threaded Wcb Flanged End Check Valve

Dn200 Pn16 Astm A351 Cf8m Female Npt Threaded Wcb Flanged End Check Valve

  • Dn200 Pn16 Astm A351 Cf8m Female Npt Threaded Wcb Flanged End Check Valve
Dn200 Pn16 Astm A351 Cf8m Female Npt Threaded Wcb Flanged End Check Valve
Product Details:
Place of Origin: China
Brand Name: TOBO
Certification: ISO 9001/ API 6D
Model Number: Y-Type Angle Seated Spring Check Valve
Payment & Shipping Terms:
Minimum Order Quantity: 1Pcs
Price: Negotiation
Packaging Details: Usually packing by plywood case suit for sea delivery
Delivery Time: 10 working days
Payment Terms: L/C, T/T, Western Union
Supply Ability: 10000 Pcs Per Month
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Detailed Product Description
Name: Y-Type Angle Seated Spring Check Valve Material: SS316
Application: Oil, Gas, Water, Steam Etc Advantage: Quiet
Temperature: -20℃ 〜 160℃ Pressure: 56Bar
Connection: BSP End Size: 2''
High Light:

Dn200 Flange Check Valve

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Wcb Flanged End Check Valve

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Npt Threaded Flange Check Valve

DN200 PN16 ASTM A351 GR. CF8M FEMALE NPT THREADED WCB FLANGED END CHECK VALVE

What is a Check Valve?

The valve that used to prevent backflow in a piping system is known as a check valve. It is also known as a non-return valve or NRV. The pressure of the fluid passing through a pipeline opens the valve, while any reversal of flow will close the valve.

It allows full unobstructed flow and automatically shuts as pressure decreases. The exact operation will vary depending on the mechanism of the valve.

 

Specifications:

 

 

Nominal pressue (MPa) 1.0 1.6
Nominal diameter(mm) 50-600 50-600
Test pressure Shell 1.5 2.4
(MPa) Seal 1.1 1.76
Applicable temperature 150
Applicable medium Fresh water, Sewage, Sea water, Air, Vapor, Food, Medicine, Oils, Acids,
Alkalis, etc.
Operating mode manual, worm gear, pneumatic, electric, etc.

 


Dn200 Pn16 Astm A351 Cf8m Female Npt Threaded Wcb Flanged End Check Valve 0

  • Swing Type
  • Working pressure: 200psi WOG
  • Body: ASTM A351 Gr. CF8M
  • Disc: ASTM A351 Gr. CF8M
  • Packing: PTFE
  • End Connections: Female NPT Threaded

Parts of Non-Return Valve

It is consists of body, cover, disk, hinge pin, and seat ring. In the image below you can see the parts of the valve.

 

Dn200 Pn16 Astm A351 Cf8m Female Npt Threaded Wcb Flanged End Check Valve 1

 

Types of Valves

The type of disk will decide the type of valve. Most common types of Check valves are

  • Swing Type.
    • Top Hinged
    • Tilting disk
  • Lift Type
    • Piston Type
    • Ball type
  • Dual Plate Type
  • Stop Check Valve

Swing Check Valve

Dn200 Pn16 Astm A351 Cf8m Female Npt Threaded Wcb Flanged End Check Valve 2

The disc in a swing type valve is unguided as it fully opens or closes. This Valve operates when there is flow in the line and get fully closed when there is no flow. Turbulence and pressure drop in the valve is very low. Disk and seat designs can be of metal to metal or metal to composite.

Tilting Disc Check Valve

Dn200 Pn16 Astm A351 Cf8m Female Npt Threaded Wcb Flanged End Check Valve 3

The tilting disc type valve is designed to overcome some of the weaknesses of conventional swing type valves. The design of the tilting disk enables the valve to open fully and remain steady at lower flow rates and close quickly when the forwarding flow stop.

Ball Type and Plug Type Lift NRV

The seat design of a lift Check valve is similar to a Globe valve. A piston or a ball is usually used as a disk.

Lift Check valves are particularly suitable for high-pressure service where the velocity of flow is high. The disk is perfectly set on the seat with full contact. They are suitable for installation in horizontal or vertical pipelines with upward flow.

Dual Plate / Dual Disc Check Valve

Dn200 Pn16 Astm A351 Cf8m Female Npt Threaded Wcb Flanged End Check Valve 4

A dual plate check valve is known as a butterfly check valve, Folding Disc Check Valves, double-disc, or splits disc check valve. As the name suggests, two halves of the disk move towards centreline with the forward flow and with reverse flow two halves open and rest on the seat to close the flow (Flapping action).

 

Stop Check Valve

Dn200 Pn16 Astm A351 Cf8m Female Npt Threaded Wcb Flanged End Check Valve 5

Stop Check Valve is a combination of a lift check valve and a globe valve. It can either be used as a check valve or as an isolation (stop) valve like a globe valve. These valves can be closed with the help of a stem that is not connected to the valve disc during normal operation and make it possible to use these valves as a regular NRV.

 

 

Dn200 Pn16 Astm A351 Cf8m Female Npt Threaded Wcb Flanged End Check Valve 6

 

Contact Details
TOBO STEEL GROUP CHINA

Contact Person: Amy

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