TOBO STEEL GROUP CHINA

Home News

ASTM A351 CF8M STAINLESS STEEL THREADED CHECK VALVE, 316SS FLANGE CHECK VALVE​

Company News
ASTM A351 CF8M STAINLESS STEEL THREADED CHECK VALVE, 316SS FLANGE CHECK VALVE​
Latest company news about ASTM A351 CF8M STAINLESS STEEL THREADED CHECK VALVE, 316SS FLANGE CHECK VALVE​

amy@tobo-group.com

 

ASTM A351 CF8M STAINLESS STEEL THREADED CHECK VALVE, 316SS FLANGE CHECK VALVE​

Check valves are automatic valves that open with forward flow and close with reverse flow.

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

 

Details:
Size: DN80
Pressure: PN25
Body/Bonnet: A216 WCB
Disc:A216 WCB+13Cr
Seat: A105+13Cr
Bolted Bonnet Design

 

The pressure of the fluid passing through a system opens the valve, while any reversal of flow will close the valve. Exact operation will vary depending on the type of Check valve mechanism. Most common types of Check valves are swing, lift (piston and ball), butterfly, stop and tilting-disk.


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.


Standards:
 

Design & Manufacture Flange Connection Face to Face Dimension Test & Inspection
DIN3202 DIN2533&EN1092 DIN3202 F6  

 

Types of Check valves


Swing Check valve
A basic swing Check valve consists of a valve body, a bonnet, and a disk that is connected to a hinge. The disk swings away from the valve-seat to allow flow in the forward direction, and returns to valve-seat when upstream flow is stopped, to prevent backflow.

The disc in a swing type Check valve is unguided as it fully opens or closes. There are many disk and seat designs available, in order to meet the requirements of different applications. The valve allows full, unobstructed flow and automatically closes as pressure decreases. These valves are fully closed when flow reaches zero, in order to prevent backflow. Turbulence and pressure drop in the valve are very low.

latest company news about ASTM A351 CF8M STAINLESS STEEL THREADED CHECK VALVE, 316SS FLANGE CHECK VALVE​  0
Lift Check valve
The seat design of a lift-Check valve is similar to a Globe valve. The disc is usually in the form of a piston or a ball.

Lift Check valves are particularly suitable for high-pressure service where velocity of flow is high. In lift Check valves, the disc is precisely guided and fits perfectly into the dashpot. Lift Check valves are suitable for installation in horizontal or vertical pipe-lines with upward flow.

Flow to lift Check valves must always enter below the seat. As the flow enters, the piston or ball is raised within guides from the seat by the pressure of the upward flow. When the flow stops or reverses, the piston or ball is forced onto the seat of the valve by both the backflow and gravity.

latest company news about ASTM A351 CF8M STAINLESS STEEL THREADED CHECK VALVE, 316SS FLANGE CHECK VALVE​  1

Features:

1. Small in size, light in weight, compact in structure,easy in maintenance.
2. Two torsion springs are used excreting on each of the pair valve plates,which close the plates quickly
And automatically.
3. The quick-close action prevents the medium from flowing back and eliminates water hammer effect.
4. Short body structure length and good rigidity.
5. This valve is tightly sealed, without leakage under the pressure water test.
6. Safe and reliable in operation,high interference-resistance.

Pub Time : 2022-02-24 21:45:16 >> News list
Contact Details
TOBO STEEL GROUP CHINA

Contact Person: Ms. TOBO

Tel: 021-31262012

Send your inquiry directly to us