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High-Pressure On-Line Double Block Test Plug
High-Pressure On-Line Double Block Test Plug
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Double block weld tester engineered for live pipeline isolation and hydrostatic weld testing without full shutdown. Dual-seal and bleed system ensures a secure pressure barrier for safe operation under residual upstream pressure.
Application:
- On-line weld isolation during live system modifications
- Hydrostatic testing of weld joints under residual pressure
- Oil, gas, and power pipelines requiring high-integrity isolation
Key Feature:
- Dual-seal “double block” design with integrated bleed port.
- Safe isolation under upstream pressure.
- Allows upstream monitoring and gas purging.
- Reduces test volume and water usage.
Size: 1/2" up to 48"
Pressure: up to 2250psi
