Stainless steel check valves

Stainless steel check valves
 

Product description:


Check: check valve, also known as one-way valve or check valve, whose role is to prevent the line of medium back Pump water off the end of the valve also belongs to check class.

Opening and closing pieces by medium flow and forces to turn on or off, in order to prevent the media called back check valve. Check valves are automatic valves, mainly used for one-way flow of media channels, only allowing media to flow in one direction in order to prevent accidents.

Check valve according to the structure can be divided into lift check valve, swing check valve and butterfly valve of three. Lift check valve can be divided into vertical and horizontal. Swing check into single lobe, double valve type and Orange Peel three. Butterfly valve for the straight-through, over several valve in the connection form can be divided into threaded connections, flange connections and welding three species.

specifications:

1 Suitable medium: water, oil, steam.

2 Suitable temperature: ≤425 ℃.

3 valves and valve test pressure at a temperature of maximum working pressure levels.

Nominal
PN
(MPa)
Strength test pressure
1.5P
(MPa)
Sealing test pressure
Medium temperature (℃)
water
1.1P
(MPa)
gas

(MPa)
200
250
300
350
400
425
450
The maximum allowable working pressure (MPa)
1.6
2.40
1.76
0.6
1.6
1.5
1.3
1.2
1.0
0.9
0.7
2.5
3.75
2.75
2.5
2.3
2.0
1.8
1.6
1.4
1.1
4.0
6.00
4.40
4.0
3.9
3.3
3.0
2.8
2.3
1.8
6.4
9.60
7.04
6.4
5.9
5.2
4.7
4.1
3.7
2.9
10.0
15.00
11.00
10.0
9.2
8.2
7.3
6.4
5.8
4.5
16.0
24.00
17.00
16.0
14.7
13.1
11.7
10.2
9.3
7.2

Instruction manual:
  1. A valve is an essential means of industrial piping, valves signs and nameplates carefully check the installation meets the requirements of the role.

  2. 2 installation will purge valve before a clean and clear during transport caused by the defect.

  3. 3 After installing the valve should be kept clean, the threaded portion of the stem to regularly refuel.

  4. Four valves should be stored in dry and ventilated room, long-term storage, it should be inspected regularly to prevent corrosion.

Note: Use the screw gland Wet leakage occurs, it should be screwed gland.


For more information about Seiichi valve visit: http:. //yjchengyi.cn 1688. com