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English  |
ST-KZ0011
SHSUOTEVALVE
848180
1.Main parts&material
| No. | Part | Material | China stardard |
| 1 | cap | ABS | |
| 2 | Adjust screw | A2 | A4 |
| 3 | Nut | A2 | A4 |
| 4 | Spring plate | 304 | 316 |
| 5 | Bonnet | CF8 | CF8M |
| 6 | Spring | Cr-Va | |
| 7 | Block nut | A2 | A4 |
| 8 | Fixing holder | 304 | 316 |
| 9 | Screw | A2 | A4 |
| 10 | Diaphragm | EPDM+Nylon | NBR+Nylon |
| 11 | Yoke | CF8 | CF8M |
| 12 | Body | CF8 | CF8M |
| 13 | Disc | 304+EPDM | 316+EPDM |
| 14 | O-ring | EPDM | NBR |
| 15 | plug | CF8 | CF8M |
2.Features
- Stem diaphragm assembly with double lead action through top and seat rings provides long life and reliability.
-All cast iron parts are coated with powder epoxy resin to resist corrosion
- During maintenance, the main valve can be repaired directly on line without disconnecting from the pipeline.
-The linear flow of valve body is convenient to obtain better control characteristics and lower head loss.
-Ductile iron has high strength and light weight
-Reinforced nylon membrane, die layer thickness uniform strength, good precision, durable.
- Internal USES the stainless steel seat, the guide platen and the shaft to be durable.
-Good closing effect, zero leakage safety,
-Hydraulic operation does not need external power, and can be matched with different guide pins and accessories as opening and closing or adjusting water level, pressure and flow.
Feature description:
01. The upper end device of the main valve has a solenoid valve, which can be opened or closed to receive telecommunication messages.
02. It can be used for remote operation purposes.
3.Execution standard
| Design standard | CJ/T219, JB/T10674 | |
| Connection standard | GB/T17241.6 | |
| Face spacing standard | GB/T12221 | |
| Inspection testing standard | GB/T13927 | |
4.Technical parameters
| Nominal diameter | ||
| Nominal pressure | ||
| Operating temperature | 0°C~85°C | |
| Seal test | 1.1PN | |
| Shell test | 1.5PN | |
| Suitable medium | Water | |
5.Operating principle
The work of the valve is based on the balance between the force exerted by the spring downward to open the disc and the force exerted by the diaphragm upward to shut the disc.When water is used at the back end of the valve, the pressure of the spring is greater than the water pressure acting on the lower end of the diaphragm.The greater the water flow at the back end, the smaller the water pressure acting on the lower end of the diaphragm, and the greater the disc opening;When the back end of the valve is not in water, the pressure at the back end increases, and the diaphragm is pushed upward to close the disc, stabilizing the pressure at the back end at the set pressure value.The pressure value set behind the valve can be adjusted by adjusting screws.
1.Main parts&material
| No. | Part | Material | China stardard |
| 1 | cap | ABS | |
| 2 | Adjust screw | A2 | A4 |
| 3 | Nut | A2 | A4 |
| 4 | Spring plate | 304 | 316 |
| 5 | Bonnet | CF8 | CF8M |
| 6 | Spring | Cr-Va | |
| 7 | Block nut | A2 | A4 |
| 8 | Fixing holder | 304 | 316 |
| 9 | Screw | A2 | A4 |
| 10 | Diaphragm | EPDM+Nylon | NBR+Nylon |
| 11 | Yoke | CF8 | CF8M |
| 12 | Body | CF8 | CF8M |
| 13 | Disc | 304+EPDM | 316+EPDM |
| 14 | O-ring | EPDM | NBR |
| 15 | plug | CF8 | CF8M |
2.Features
- Stem diaphragm assembly with double lead action through top and seat rings provides long life and reliability.
-All cast iron parts are coated with powder epoxy resin to resist corrosion
- During maintenance, the main valve can be repaired directly on line without disconnecting from the pipeline.
-The linear flow of valve body is convenient to obtain better control characteristics and lower head loss.
-Ductile iron has high strength and light weight
-Reinforced nylon membrane, die layer thickness uniform strength, good precision, durable.
- Internal USES the stainless steel seat, the guide platen and the shaft to be durable.
-Good closing effect, zero leakage safety,
-Hydraulic operation does not need external power, and can be matched with different guide pins and accessories as opening and closing or adjusting water level, pressure and flow.
Feature description:
01. The upper end device of the main valve has a solenoid valve, which can be opened or closed to receive telecommunication messages.
02. It can be used for remote operation purposes.
3.Execution standard
| Design standard | CJ/T219, JB/T10674 | |
| Connection standard | GB/T17241.6 | |
| Face spacing standard | GB/T12221 | |
| Inspection testing standard | GB/T13927 | |
4.Technical parameters
| Nominal diameter | ||
| Nominal pressure | ||
| Operating temperature | 0°C~85°C | |
| Seal test | 1.1PN | |
| Shell test | 1.5PN | |
| Suitable medium | Water | |
5.Operating principle
The work of the valve is based on the balance between the force exerted by the spring downward to open the disc and the force exerted by the diaphragm upward to shut the disc.When water is used at the back end of the valve, the pressure of the spring is greater than the water pressure acting on the lower end of the diaphragm.The greater the water flow at the back end, the smaller the water pressure acting on the lower end of the diaphragm, and the greater the disc opening;When the back end of the valve is not in water, the pressure at the back end increases, and the diaphragm is pushed upward to close the disc, stabilizing the pressure at the back end at the set pressure value.The pressure value set behind the valve can be adjusted by adjusting screws.
