Bronze plug valve Description
Bronze plug valve is a valve made of cast bronze (copper-tin alloy) as the main material. It can realize fluid on-off or flow direction control by rotating the conical/cylindrical plug body by 90°. Its structure includes:
Bronze valve body and plug body: precision ground metal hard seal structure;
Packing seal: oil-immersed asbestos or graphite packing is used at the valve stem to prevent leakage;
Operation method: the handle or handwheel is rotated 90° to open and close.
Bronze plug valve specification
| Parameter | Numerical range |
|---|---|
| Nominal diameter | DN15～DN50 (conventional), maximum DN200; |
| Pressure Level | Class 125/150 (corresponding to PN10/16); |
| Temperature range | ≤120℃ (conventional), special alloys can reach 200℃; |
| Connection | External thread (mainly NPT/BSP); |
| Applicable media | Water, seawater, oil, non-corrosive gas |
Standard
| Standard Type | American Standard | Core Content |
|---|---|---|
| Design and pressure rating | ASME B16.34 | Valve pressure-temperature ratings, structural strength requirements; |
| Bronze valve special | MSS SP-80 | Bronze gate valve/stop valve/plug valve wall thickness, material technology; |
| Threaded connection | ANSI B1.20.1(NPT Thread) | Interface dimensions and tolerances |
Bronze plug valve
Features
Corrosion resistance: Bronze is resistant to seawater and weak acid corrosion, better than brass;
Wear and particle resistance: High hardness, suitable for media containing solid particles;
Reliable sealing: Metal hard seal + packing double protection, low leakage rate in long-term use;
Easy to operate: 90° rotation opening and closing, small torque;
Compact structure: Small size, suitable for scenes with limited space.
Applications
1. Shipbuilding and marine engineering
Scenarios: seawater pipelines, ballast systems, fuel oil transportation; Function: resistance to salt spray corrosion, rapid fluid cut-off.
2. Petrochemical and energy
Scenario: low-pressure oil pipelines, natural gas distribution systems; Function: medium diversion and flow direction switching (three-way valve).
3. Industrial water treatment
Scenario: cooling water system, boiler sewage pipeline; Function: flow regulation, resistance to water quality impurities wear.
4. Firefighting system
Scenario: fire water pipelines, sprinkler control; Function: rapid opening and closing to ensure emergency response.
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