The short answer
Order capsule filters by the exact inlet, outlet and auxiliary-port configurations, together with their mating tubing and fittings. A matching nominal size or a photograph is not enough to establish a secure, compatible and process-appropriate connection.
Create an interface record for every port
Give each port an identifier on an approved drawing: feed, filtrate, vent, drain and test connection where applicable. Record the connector family, dimensional standard, nominal size, actual mating dimensions, material and supplied protective closure. Specify whether dimensions describe tubing inside diameter, outside diameter or a fitting interface; these are not interchangeable.
Request the mating component's part number and drawing, not just a statement that it fits. For threaded connections, identify the thread standard and form. For a sanitary connection, identify the compatible seal and clamp arrangement. For a proprietary connector, confirm the correct mating half and its intended operating or controlled-connection function.
Use a connection-specific acceptance matrix
Parker's named capsule instructions describe different arrangements for barbed, sanitary, threaded and other connectors. This supports the need for interface-specific review, not a universal installation recipe.
| Interface | Purchase specification | Acceptance evidence |
|---|---|---|
| Hose barb and flexible tube | Approved tube dimensions, material and securing component | Supplier-supported combination and assembly drawing |
| Sanitary connection | Mating interface, gasket profile and clamp identity | Drawing and compatibility of the complete joint |
| Threaded fitting | Thread system, mating form and approved sealing approach | No reliance on nominal size alone |
| Quick or proprietary connector | Exact mating part and operating function | Documented compatible pair and use instructions |
| Vent, drain or test port | Closure, routing and required boundary control | Accessible, identified and included in the reviewed assembly |
Check the system around the joint
Include tubing flexibility, bend limits, mechanical support and routing in the review. A visually compatible tube can place an unacceptable load on a port if unsupported equipment hangs from it. Confirm how the assembly is supported in its intended orientation and during any approved preparation or treatment.
Review the permitted pressure-temperature envelope for every relevant component, including reverse-pressure exposure where applicable. The strongest component does not establish the rating of the assembly. Also examine chemical compatibility, product-contact documentation and prior treatment for tubing and seals, not just the membrane. Where a sterile boundary is required, the connection method and handling controls need specific justification; a connector name alone does not create that boundary.
Turn drawings into receiving and installation checks
Compare the received order codes, port arrangement and component quantities with the released assembly list. Check packaging condition and any required supply-state identifiers. Record discrepancies before installation. A spare fitting with a similar appearance is not an approved substitute simply because it can be pushed or threaded into place.
Arrange a fit verification and an approved leak-check plan using qualified personnel before valuable process material is introduced. Do not improvise tightening instructions, sealants or pressure settings. Keep the completed interface record with the purchase order, and require review whenever tubing material, connector source, seal profile or port orientation changes. This prevents a minor purchasing substitution from becoming an undocumented process modification.
Your review checklist
- Label every process and auxiliary port on the drawing.
- Specify connector standards and the exact mating part numbers.
- Distinguish tubing inside diameter, outside diameter and fitting size.
- Include seals, clamps, closures and securing parts in the bill of materials.
- Verify support, routing and the complete assembly operating envelope.
- Define receiving checks, approved leak verification and substitution review.
Limits of this guidance
Procurement and interface-review guidance, not a connection-installation or pressure-test procedure. No JINLV fitting interchangeability or assembly rating is asserted. Qualified personnel must approve and execute installation and testing.
Questions buyers ask
Can a clear photograph replace an interface drawing?
It can help identify a candidate, but it does not establish tolerances, thread form, sealing geometry or material. Use controlled dimensions and part identification for acceptance.
Is a tube that fits tightly on the barb acceptable?
Not on feel alone. Tube dimensions, material, securing arrangement and operating conditions must be supported for that joint. Follow the applicable manufacturer's instructions and approved assembly procedure.
Technical references
References support general principles or the named supplier's own products; they do not certify or validate a JINLV configuration.
- Glas-Tech II Capsule and Mini Cartridge: Installation Procedure
- Pall Industrial Capsule Assemblies: Operating and Installation Procedures
AI-assisted technical synthesis of the references below, with editorial checks. This is general procurement guidance, not an independently signed engineering review or a product validation report.
English is the indexing version. Chinese and Indonesian are reading translations of the same article.