Bulkhead Pressure Testing Tube

The Bulkhead Pressure Testing Tube provides a simple visual method for checking the sealing performance of threaded bulkhead components during hydrostatic pressure testing. Test samples, cable penetrators, connectors, sensors, or blanking plugs are installed into the matching threaded openings at both ends of the tube. The complete assembly is then placed inside a compatible water pressure testing chamber and pressurized according to the customer’s test procedure.

After testing, the tube can be removed from the chamber and inspected for water ingress. Because the body is transparent acrylic, internal leakage is easier to identify than with an opaque fixture. This makes the tube useful for R&D, QA, production screening, and troubleshooting of subsea sealing interfaces.

The long and short versions support different test setups. The Long Version provides more internal space for cable harnesses, wiring, or longer test assemblies. The Short Version reduces occupied volume inside the chamber, which can be useful when testing multiple assemblies or working in limited chamber space.

Each standard version has the same thread type on both ends. Select the tube that matches the thread of the test sample and use matching components or blanking plugs to seal all openings before pressure testing. Any installed test sample, blanking plug, O-ring, connector, cable penetrator, or mating component must be correctly installed and appropriately rated for the intended pressure. The lowest-rated component in the complete test assembly sets the usable pressure limit of the test setup.

The tube is rated for hydrostatic pressure testing to 10 MPa / 1,000m. A maximum pressure reference of 12 MPa is listed for the tube, but the recommended rated-depth reference for product selection and repeated testing should remain 10 MPa / 1,000m unless a specific test procedure and all installed components are confirmed suitable for higher pressure.

Custom versions may be available for specialized test setups, including alternate tube lengths, custom body sizes, and non-standard thread options. Additional lead time and pricing may apply for custom configurations. Please contact Blu-Sub to review your test requirements.

This product is a consumable component. Frequent disassembly, reassembly, and pressure cycling can wear the sealing faces over time. Before each reuse, inspect the end faces for smoothness and inspect the acrylic body for cracks, visible stress marks, chips, or other damage. Continued use should be based on actual inspection condition and test history.

Important: Do not expose the acrylic tube to alcohol, alcohol derivatives, solvents, or incompatible cleaning chemicals. These chemicals may cause acrylic cracking and can make the tube unsafe for pressure testing.

Pressure Rating Note: The rated operating reference for product selection is 10 MPa / 1,000m. A maximum pressure reference of 12 MPa is listed for the tube. Do not exceed the pressure rating of the lowest-rated component in the complete test assembly, including plugs, O-rings, penetrators, connectors, sensors, and the pressure chamber itself.

Consumable Fixture Note: This tube is a consumable test fixture. Frequent disassembly, reassembly, and pressure cycling can wear the sealing faces. Inspect the acrylic body and end faces before each reuse.

Chemical Compatibility Warning: Alcohol and alcohol derivatives are strictly prohibited. Contact with incompatible chemicals may cause acrylic cracking and can make the tube unsafe for pressure testing.

Custom Configuration Note: Custom tube sizes, lengths, thread types, and fixture configurations may be available upon request. Additional lead time and pricing may apply. Please contact Blu-Sub to discuss custom requirements.