Engineered UL Listed Test and Drain Valve for Fire Sprinkler Systems Inspection

UL Test and Drain Valve(Hants Model HDT), also known as a fire sprinkler test valve or drain valve, combines three functions in one compact design: test, drain, and shut-off. This innovative 3-in-1 valve simplifies installation, saves space, and reduces maintenance costs, making it an essential component in fire sprinkler systems.

Manufactured under our sub-brand of Hants, model HDT is UL Listed and designed to meet NFPA requirements, ensuring reliability and compliance in life safety systems worldwide.

Applications of UL Test and Drain Valve

• Fire sprinkler systems for testing water flow through a sight glass.
• Wet pipe fire sprinkler systems requiring test and drain functions.
• As a replacement for multiple valve assemblies (ball valve + test orifice + drain).
• High-rise, commercial, and residential buildings with sprinkler protection.
• Industrial facilities, warehouses, hospitals, and public buildings with fire sprinkler systems.

Key Features and Benefits of UL Test and Drain Valve

• UL Listed, ensuring compliance with NFPA fire protection standards.
• Unique three-in-one design: OFF / TEST / DRAIN in a single compact valve.
• Integrated tamper-resistant test orifice with sight glass for flow verification.
• Saves space and reduces installation costs compared to multi-valve assemblies.
• Rugged body construction for durability and long service life.
• Easy installation and maintenance with compact design.
• Suitable for both new construction and retrofit fire protection projects.

Frequently Asked Questions(FAQ) about UL Test and Drain Valves

Q1: Is the test and drain valve NFPA compliant?

Yes. Model HDT7 is UL Listed, which satisfies NFPA requirements for test and drain valves.

Q2: What makes the UL test and drain valve different from a standard ball valve?

Unlike a ball valve, the HDT7 has a three-position design (OFF / TEST / DRAIN) and integrates a sight glass with a test orifice.

Q3: What is the function of a Test and Drain Valve?

It allows testing of water flow (through the sight glass) and provides a quick drain function for fire sprinkler systems

Q4: Where should a Test and Drain Valve be installed?

It is typically installed at sprinkler risers or on wet pipe sprinkler systems where testing and drainage are required.

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