Zodiac - TRI barb and block compression fitting for acid tube - R0740400

Zodiac – TRI barb and block compression fitting for acid tube – R0740400

The Zodiac R0740400 is a genuine OEM replacement barb and block compression fitting set designed for use with the acid/pH dosing tube on Zodiac TRI chlorinator and compatible pH control systems. This fitting set provides the critical mechanical connection between the peristaltic dosing pump and the chemical injection point, ensuring a secure, leak-free seal for reliable acid or pH-down chemical delivery. The set includes both the barbed hose connector and the compression block, meaning everything needed for a complete tube connection replacement is included in a single package.

Technical characteristics and compatibility

The R0740400 barb and block set is engineered to work with the flexible peristaltic tubing used in Zodiac’s chemical dosing systems. The barbed fitting grips the inner wall of the dosing tube for a firm hold, while the block compresses around the outer wall to prevent accidental disconnection and eliminate leaks — even under the repeated flexing that is characteristic of peristaltic pump operation. Both components are manufactured from chemically resistant materials compatible with the acidic solutions typically used in pH correction, protecting the fittings from degradation over time. This part is confirmed compatible with the Zodiac TRi chlorinator range as well as the eXO iQ pH, iQ PRO, pH Perfect, and Hydroxinator iQ series systems. The part is sold as a set of two fitting assemblies, allowing both inlet and outlet tube connections to be serviced in a single maintenance operation.

Suitability and application

This replacement fitting set is intended for pool owners and service technicians maintaining Zodiac automated chlorination and pH dosing systems. It is the correct choice when the existing tube connection fittings show signs of cracking, chemical degradation, leaking, or mechanical wear that compromises accurate chemical delivery. Because peristaltic pump tube connections are subject to continuous chemical exposure and mechanical stress, periodic replacement is a standard part of system maintenance. Replacing worn fittings promptly helps maintain accurate pH dosing performance and protects other system components from chemical damage caused by leaks. This part is suitable for both residential and commercial pool installations using compatible Zodiac chlorinator platforms.