Deskripsi
QT450 Composite Exhaust Valve
Model : CARX-16Q DN300
Material : QT450
Brand : Shanghai Valve Factory
Product Overview
The CARX-16Q DN300 is a composite exhaust valve designed to automatically release trapped air and protect pipelines from vacuum damage. It combines large-volume air release during filling and small-volume discharge during operation, with air intake under negative pressure. The valve body is made from QT450 ductile iron, offering strength and corrosion resistance for water systems.
- Type: Barrel-type composite exhaust valve
- Model: CARX-16Q
- Nominal Diameter: DN300
- Pressure Rating: PN16
- Function: Automatic air release and vacuum protection
- Operation: Float-actuated (no external power)
Specifications (DN300, PN16)
| Parameter | Value |
|---|---|
| Nominal Diameter | DN300 |
| Nominal Pressure | PN16 (1.6 MPa) |
| Medium | Water, oil, non-corrosive liquids |
| Temperature Range | 0°C to +100°C |
| Flow Capacity (Air Discharge) | Up to 12,717 m³/h |
| Test Standard | GB/T 13927 / API 598 |
| Connection Type | Flanged (GB/T 17241.6 or EN 1092-2) |
Material List
| Component | Material |
|---|---|
| Body | QT450 (Ductile Iron) |
| Cap | QT450 |
| Float | SUS304 Stainless Steel |
| Lever Frame | ZH59 Copper Alloy |
| Rod | ZH59 Copper Alloy |
| Plug Head | NBR Rubber |
| Fasteners | Carbon Steel / Stainless Steel |
| Gasket | Rubber or Graphite (depending on spec) |
QT450 offers high tensile strength (~450 MPa), impact resistance, and good corrosion resistance for water-based systems.
Dimensions (DN300, PN16)
| Dimension | Value (mm) |
|---|---|
| H (Height) | ~750–850 |
| L (Body Length) | ~600–650 |
| L1 (Flange Width) | ~400–450 |
| D (Flange OD) | ~460–485 |
| D1 (Bolt Circle) | ~410–440 |
| D2 (Bore) | ~375–400 |
| z–φd (Bolt Holes) | 12–16 × φ26–30 |
These dimensions follow GB/T 17241.6 or EN 1092-2 PN16 flange standards.
Application Areas
Ideal for:
- Municipal water supply systems
- Industrial water distribution networks
- Pump stations and reservoirs
- Irrigation systems
- HVAC and utility pipelines
- Any long-distance or high-point pipeline prone to air accumulation or vacuum formation
The valve improves hydraulic efficiency and protects against pipe collapse due to vacuum conditions.
Ulasan
Belum ada ulasan.