Ductile Iron Pressure Holding and Safety Relief Valve 65-200mm DN 1.6/2.5 MPa for Fire Fighting Systems
Professional control accessory designed for fire fighting systems and industrial pipelines, featuring reliable sealing performance and simplified installation.
This fire fighting valve serves as a critical control component in industrial and building pipeline systems. The innovative clamp connection design simplifies installation and pipeline connections, advancing pipeline connection technology with efficiency and convenience.
The 8500X series operates as both a pressure relief valve and pressure holding valve through hydraulic automatic control. The system includes main valve, pilot valve, needle valve, ball valves, micro filter, and pressure gauge for comprehensive pressure management.
Pressure Relief Mode: Maintains water supply pressure below set safety values while preserving upstream pressure. Automatically opens when pressure exceeds safety limits and closes when pressure normalizes.
Pressure Holding Mode: Maintains upstream water pressure by controlling valve opening based on pressure differentials, ensuring consistent system performance.
| Parameter | Specification |
|---|---|
| Nominal Diameter (DN) | 65-200 mm |
| Nominal Pressure (PN) | 1.6/2.5 MPa |
| Test Pressure - Strength (Water) | 2.4/3.8 MPa |
| Test Pressure - Enclose (Water) | 1.8/2.8 MPa |
| Working Temperature | 0-80°C |
| Suitable Medium | Water |
- High sensitivity with safe pressure relief capability
- Quick opening and slow closing valve disc design prevents water hammer impact
- Smooth, quiet operation without noise
- Extended service life with durable construction
- Novel hydraulic control system based on proven hydraulic principles
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