Hourleey 3/4 in Isolator Tankless Water Heater Service Valve Kit

In this review the Hourleey 3/4 in isolator tankless water heater service valve kit is evaluated for homeowners and technicians who need a simple, durable way to isolate and service tankless units. The single biggest reason to buy is the kit's all-brass, lead-free construction combined with full port ball valves that deliver strong flow for flushing or servicing. It is a straightforward repair and maintenance kit designed to fit standard 3/4 in connections on most residential tankless water heaters.

Key Features

• Lead-free brass construction: The kit uses certified lead-free brass components to meet federal and state standards for drinking water system parts, giving long-term corrosion resistance and safety.
• Full port ball valves: Full port design provides better flow rate during flushing and maintenance, so you get faster drain and refill cycles when servicing a unit.
• Color-coded handles: The 1/4 red and blue handles make it easy to identify hot and cold isolation valves at a glance during installation or service.
• 500 WOG rating: Valves rated 500 WOG provide a durable pressure tolerance for typical residential and light commercial tankless water heater applications.
• Standard 3/4 in IPS size: The kit fits common 3/4 in connections used by many tankless brands, simplifying replacement or retrofit work.
• Includes pressure relief valve: The package includes a pressure relief valve with CSA marking to authenticate its suitability for water and gas pipe systems.

Who It's For

This kit is best for DIY homeowners, plumbers, and service technicians who work on gas tankless water heaters and need a dependable isolation solution for routine flushing, repair, or replacement. It fits popular residential brands and is sized for standard 3/4 in IPS plumbing, making it useful when upgrading or replacing old valves.

Those who should look elsewhere include installers requiring specialty fittings outside 3/4 in IPS sizes or systems that mandate a different valve style; also, if absolute perfection in every unit is critical for a commercial high-cycle installation, consider sourcing higher-end industrial valve assemblies with reinforced fixtures.

Pros & Cons

Pros

• All-brass, lead-free materials that meet federal and state lead-content standards for potable systems.
• Full port ball valves improve flow for faster flushing and maintenance of tankless heaters.
• Color-coded red and blue handles reduce installation errors and speed identification in the field.
• Good value for routine residential tankless servicing according to several customer reports.

Cons

• Some customers reported occasional leaks or a cracked unit at the TMP screws, so careful installation and inspection are advised.
• Not intended for nonstandard plumbing sizes or high-cycle commercial systems without confirming compatibility.

Specifications

Package contents	3/4 in isolation kit with hot and cold valves, pressure relief valve
Valve size	3/4 in IPS
Valve rating	500 WOG
Handle type	1/4 red and blue lever handles
Material	Lead-free brass components
Certifications	CSA on pressure relief valve; meets federal/state lead requirements

Our Verdict

The Hourleey 3/4 in isolator service valve kit is a sensible, cost-effective choice for homeowners and technicians who need a reliable isolation solution for tankless water heater maintenance. Its lead-free brass parts, full port valves, and clear hot/cold identification make it practical for most residential installs, though buyers should inspect for leaks during initial use.

Frequently Asked Questions

Will this kit fit my tankless water heater?
The kit is designed for standard 3/4 in IPS connections and fits most residential tankless brands; confirm your unit uses 3/4 in fittings before purchase.

Is the material safe for drinking water?
Yes, components are certified lead-free and meet federal and state standards for drinking water system parts.

Does it include a pressure relief valve?
Yes, the package includes a pressure relief valve with CSA marking to verify authenticity.