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SSV-D400 series self operated butterfly shut-off valve
Product application ※ Suitable for pressure regulating devices in long-distance natural gas pipeline distribution stations, station self use gas press
Product details
Product Features
※ Eccentric butterfly cutting structure
※ Comes with a bypass valve for easy resetting
※ Valve body straight through (axial flow) with high flow rate and low noise, flow rate<50m>50m><80db>80db>
The standard configuration is self operated overpressure cut-off function
※ Optional configurations include on-site emergency manual cut-off and self operated undervoltage cut-offLinkage with remote ESD cut-off function
Product parameters
| Standard execution | EN 14382 ， Q/12WQ 5192 |
| nominal pressure | CLass150 ～ CLass600 （2.5MPa ～ 10MPa ） |
| Nominal size | DN80 ～ DN300 （NPS 3〞 ～ NPS 12〞） |
| Connection method | Flange ANSI B16.5 RF |
| Design Temperature | -46℃ ～ 60℃ |
| Cutting accuracy | ±1%（AG1）， ±2.5%（AG2.5）， ±5%（AG5） |
| response time | 0.5 seconds to 1 second |
| Explosion proof/protection level | Not lower than ExdIIBT4, IP65 |
| Main materials | Main valve housing cast steel A 216 WCB A 352 LCC Commander shell forged steel, forged aluminum Internal components made of stainless steel, steel, aluminum, Close the spring steel (X750, A276316) Sealing materials: Nitrile rubber, synthetic rubber |
Working principle
A safety shut-off valve is a safety protection device in a pressure regulating device. When the pressure at the outlet of the device rises or falls due to reasons and reaches the cut-off set value, it will automatically cut off the gas source, thereby protecting downstream pipelines and equipment from damage. In emergency situations, on-site and control room operators can also use manual buttons or remote ESD linkage functions to forcibly close the safety shut-off valve.
Product Structure Diagram
Control mechanism diagram
Outline dimension diagram
External dimensions
Weight (kg)
Valve flow coefficient KG value and pressure loss
Installation size
Connection size of pressure sampling point piping
Installation position of pressure sampling point
As shown in Figure 1, the pressure sampling point of the safety shut-off valve (SSV) is located 5-8 times the diameter of the pipeline behind the working valve (PCV)
Product ordering and selection
Selection of butterfly shut-off valve
Commander selection
Other special configuration requirements
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