Simplifying fire sprinkler testing: AGF adds relief with Model 1511
Iain Hoey
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How AGF’s DRAINANTEST Models 1500 and 1511 combine drain and test functions for commissioning and inspection of wet system risers
Fire sprinkler systems are symphonies of precision: they must flow when needed and stay silent when not.
At the heart of reliable system commissioning and ongoing inspection is the often-overlooked test valve.
AGF’s DRAINANTEST Models 1500 and 1511 bring harmony to this essential task, giving engineers and installers elegant, efficient tools to carry out alarm check tests and main drain functions without fuss.
The DRAINANTEST line is rooted in an idea both simple and powerful: combine critical functions into a compact, resilient valve assembly that supports proper system testing while minimizing connections, leakage points, and installation complexity.
Both the Model 1500 and the Model 1511 are designed for wet fire sprinkler systems where a test point is needed downstream of an alarm check valve to validate flow and alarm activation.
By combining the functions of a main drain and an inspector’s test connection, these models streamline riser assemblies and reduce field installation labor.
At a glance, the Model 1500 and Model 1511 share the core design philosophy of the DRAINANTEST brand: rugged iron bodies, single-handle ball valve operation, and a range of tamper-resistant orifices that let designers tailor testing to hydraulic requirements.
Orifice options span from smaller values suitable for residential and light commercial systems up through larger ESFR K-factors that accommodate high-demand commercial and industrial applications.
These tamper-resistant test orifices protect the installed configuration, helping maintain testing requirements throughout the life of the system.
What sets Model 1511 apart is the inclusion of a pressure relief valve with drain trim.
Some jurisdictions, insurance inspections, or system designs require pressure relief to guard against unexpected pressure spikes.
Model 1511 answers this need directly, eliminating the requirement for a separate relief assembly and the associated fittings.
With pressure relief included, installation is cleaner, and inspectors see a complete solution in one compact footprint.
By contrast, the Model 1500 is offered without the pressure relief kit, serving markets and systems where relief is not required or is provided elsewhere in the design.
This modular approach respects design intent: supply exactly what’s needed without extra parts or unnecessary cost.
Both models are available in threaded BSPT or NPT, aligning with international piping practices found across Europe, Asia, the Middle East, and beyond.
BSPT threading promotes compatibility with locally sourced components, making the DRAINANDTEST line well-suited for global projects.
NPT connections are also available, ensuring flexibility for every project.
In a global fire protection landscape where clarity and efficiency matter, AGF’s DRAINANTEST line turns a necessary procedure into a straightforward task with fewer fittings, fewer potential leak points, and more reliability when it counts.
To find an AGF distributor in your region, visit the AGFMG website.