Lower Pressure Swing Check Valve For Domestic Sewage / Seawater / River Water
Notice: the nominal diameters DNand flange bolt hole distance D1,hole number, hole diameter etc.
In this table can be designed based on the demand of the customer.
Take * number specification for non-standard products.
1.Caliber side: round DN300mm~2000mm square 300mm~3000mm |
2.Working medium: with a ph of industrial, domestic sewage, seawater, river water, with a weak acid alkali industry, domestic sewage, seawater |
3.Working temperature : ≤60°C, and according to use requirement , the maximum temperature resistance of flap valve can be designed to reach 100°C |
4.Working pressure : normal pressure to 0.25Mpa |
5.Seal type :lip-shape seal , hollow round pipe seal |
6.Open angle of flap valve cover : >75° |
7.Open when the water level inside flap valve cover is higher than outside water level by 50mm~250mm ( related to flap valve obliquity , weight and caliber size ) , and it can be designed according to the demand of the customer. |
8.hardness : ≥40 |
9.Specific gravity: 1.6~1.9 |
10.Use life: more than thirty years |
Swing Check Valve Application:
Valve is used for preventing the back-going of medium in pipelines and equipments, and the pressure of medium will bring the result of opening and closing automatically.
When the medium is back-going, valve disc will automaticaly closed to avoid accidents.
material: | |||
NO | parts | qty | material |
1 | body | 1 | 316 |
2 | O-ring | 2 | EPDM |
3 | disc | 1 | 316 |
4 | O-ring | 1 | EPDM |
5 | eye bol | 1 | 316 |
6 | small cover | 2 | 316 |
7 | pin | 1 | 316 |
8 | retainer screw | 2 | 316 |
9 | big cover | 2 | 316 |
10 | bolt | 2 | 316 |
11 | spring | 1 | 316 |
Specification | ||||||
1 | Face to face according to DIN3202-K3. | |||||
2 | Flange drilling according to ANSI125/150;DIN2501PN10/PN16;AS2129 Table E;JIS10K ect. | |||||
3 | Working Pressure: PN10;PN16 |
Main Parts and Materials | ||||||
Number | Part Name | Material | ||||
1 | Body | GGG50 | ||||
2 | Disc | SS304 | ||||
3 | Stem | SS304 | ||||
4 | Spring | SS304 | ||||
5 | Washer | PTFE | ||||
6 | Washer | PTFE | ||||
7 | Gasket | NBR | ||||
8 | Hex nut | A193A |
Standards:
Design and manufacture as BS1868, ANSI B16.34
Face to face dimensions as ANSI B16.10
End flange dimension as ANSI B16.5
Pressure-temperature ratings as ANSI B16.34
Pressure test as API 598
Applicable Medium: water ,gas,oil,and other causticity medium
.