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English  |
ST-ZH0005
SHSUOTE
848190
1.Description.
The inclined disc non-impingement check valve is a new type of check valve designed and developed by combining the valve production technology of many years with the advanced products of foreign countries. Its main advantage is to overcome the impact and water hammer phenomenon of swing check valve and lifting type upper return valve under the working condition, so as to realize non-impingement operation.
2.Main parts&material
| No. | Part | Material |
| 1 | Body | Ductille iron |
| 2 | Dsic | Ductille iron |
| 3 | Shaft | SS420 |
| 4 | Hinge shaft | SS304 |
| 5/6 | Bearing | Bronze |
| 7 | Body seat | Weld SS |
| 8 | Saling ring | Rubber |
| 9 | Retainer | Stainless steel |
| 10 | Shaft cover | Cast iron |
| 11/12 | Key | Stainless steel |
| 13 | Saling bush | Stainless steel |
| 14/15/20 | Bolts | Stainless steel |
| 16 | Circlip | Galvanized steel |
| 17 | Level | Ductille iron |
| 18 | Weight | Cast iron |
| 21 | O-Rings | Rubber |
3.Features
01.Optimum closing of sealing ring into the body seat
02.Important reduction of the shearing stains on the sealing ring
03. Long life due to low wear of the sealing ring
04.Complete relief of sealing ring in open position
05.Sealing is easily replaceable in open position
06.Replacement of sealing is very economical and can be replaced without
dismantling the valve
07.Possible to make valves for higher working-pressures (PN 25, PN 40)
08.Almost no thrust-bearing load when valve is used with shafts horizontal
09.No risk of disc flutter (vibrations) by means unbalanced disc load
4.Execution standard
| Design standard | EN 1074, BS5163 | |
| Flange connection standard | DIN3202-F4 / BS 5155 | |
| Structural length standard | GB/T12465 | |
| Inspection testing standard | GB/T12465 | |
5.Technical parameters
| Nominal diameter | DN100-3000 | |
| Nominal pressure | PN10/16 | |
| Operating temperature | 0°C~85°C | |
| Seal test | 1.25PN | |
| Shell test | 1.5PN | |
| Suitable medium | Water | |
6.Operating principle
The sealing surface of the seat of the swashplate check valve is a part of the oblique cone, the sealing line formed between the seat and the disc is approximately an elliptic curve, the curve is located in the plane and the center of the valve runner: the Angle of the line is 60 degrees;An angular eccentricity is formed between the long axis center of the approximate ellipse sealing line and the conical axis wire line, that is, the circle where the sealing face of the seat is located is the axis of the body and the flow path center of the valve body. The second eccentricity Angle is formed between the lines, which is 15-20 degrees.
The axis of the disc rotation axis forms an eccentricity relative to the axis of the body of the circle, and is eccentric relative to the plane of the sealing line;
When the pressure of the medium reaches its working pressure, the disc will open, when the pressure of the medium is reduced, the butterfly disc will automatically close, because the disc and the metal seat have eccentric characteristics, this structure enables the valve to be able to train type movement.Disc bevel valve seat and funnel valve difficult to combine and during the separation will not appear friction or sliding contact;
It can be closed quickly in the case of no external force, and the seat almost no impact, no collision and achieve the seal.At the same time, it has the characteristics of large flow and small flow.
1.Description.
The inclined disc non-impingement check valve is a new type of check valve designed and developed by combining the valve production technology of many years with the advanced products of foreign countries. Its main advantage is to overcome the impact and water hammer phenomenon of swing check valve and lifting type upper return valve under the working condition, so as to realize non-impingement operation.
2.Main parts&material
| No. | Part | Material |
| 1 | Body | Ductille iron |
| 2 | Dsic | Ductille iron |
| 3 | Shaft | SS420 |
| 4 | Hinge shaft | SS304 |
| 5/6 | Bearing | Bronze |
| 7 | Body seat | Weld SS |
| 8 | Saling ring | Rubber |
| 9 | Retainer | Stainless steel |
| 10 | Shaft cover | Cast iron |
| 11/12 | Key | Stainless steel |
| 13 | Saling bush | Stainless steel |
| 14/15/20 | Bolts | Stainless steel |
| 16 | Circlip | Galvanized steel |
| 17 | Level | Ductille iron |
| 18 | Weight | Cast iron |
| 21 | O-Rings | Rubber |
3.Features
01.Optimum closing of sealing ring into the body seat
02.Important reduction of the shearing stains on the sealing ring
03. Long life due to low wear of the sealing ring
04.Complete relief of sealing ring in open position
05.Sealing is easily replaceable in open position
06.Replacement of sealing is very economical and can be replaced without
dismantling the valve
07.Possible to make valves for higher working-pressures (PN 25, PN 40)
08.Almost no thrust-bearing load when valve is used with shafts horizontal
09.No risk of disc flutter (vibrations) by means unbalanced disc load
4.Execution standard
| Design standard | EN 1074, BS5163 | |
| Flange connection standard | DIN3202-F4 / BS 5155 | |
| Structural length standard | GB/T12465 | |
| Inspection testing standard | GB/T12465 | |
5.Technical parameters
| Nominal diameter | DN100-3000 | |
| Nominal pressure | PN10/16 | |
| Operating temperature | 0°C~85°C | |
| Seal test | 1.25PN | |
| Shell test | 1.5PN | |
| Suitable medium | Water | |
6.Operating principle
The sealing surface of the seat of the swashplate check valve is a part of the oblique cone, the sealing line formed between the seat and the disc is approximately an elliptic curve, the curve is located in the plane and the center of the valve runner: the Angle of the line is 60 degrees;An angular eccentricity is formed between the long axis center of the approximate ellipse sealing line and the conical axis wire line, that is, the circle where the sealing face of the seat is located is the axis of the body and the flow path center of the valve body. The second eccentricity Angle is formed between the lines, which is 15-20 degrees.
The axis of the disc rotation axis forms an eccentricity relative to the axis of the body of the circle, and is eccentric relative to the plane of the sealing line;
When the pressure of the medium reaches its working pressure, the disc will open, when the pressure of the medium is reduced, the butterfly disc will automatically close, because the disc and the metal seat have eccentric characteristics, this structure enables the valve to be able to train type movement.Disc bevel valve seat and funnel valve difficult to combine and during the separation will not appear friction or sliding contact;
It can be closed quickly in the case of no external force, and the seat almost no impact, no collision and achieve the seal.At the same time, it has the characteristics of large flow and small flow.
